WO1997049601A1

WO1997049601A1 - Device for reducing cyclic torque fluctuations for a vehicle driven by footpedals, particularly for bicycles or tricycles and vehicle, particularly bicycle or tricycle applying the device

Info

Publication number: WO1997049601A1
Application number: PCT/HU1997/000034
Authority: WO
Inventors: Zsolt Dolhay
Original assignee: Zsolt Dolhay
Priority date: 1996-06-26
Filing date: 1997-06-26
Publication date: 1997-12-31
Also published as: AU3354897A; HU9600201V0

Abstract

The device is recommended for bicycles and tricycles driven by footpedals (3). The invention includes four basic embodiments having a few features in common. The elongated traction power storage means (4a, 4b, 4c, 4d, 4e, 4f) can separately connect with the footpedals (3) or the environment of the connection of the footpedal (3) and the crank (2) by one of their ends. The other ends of these traction power storage means (4a, 4b, 4c, 4d, 4e, 4f) directly or indirectly connect with the frame (7) or the luggage rack. The traction power storage means (4a, 4b, 4c, 4d, 4e, 4f) keep pulling the footpedals (3) and the crank (2) up and backwards. The traction power storage means (4a, 4b, 4c, 4d, 4e, 4f) may be metal-draw springs, plastic-draw springs, gum ropes or gas-filled telescopes. All four embodiments fulfill the requirement that the device can be put in or taken out of operation during riding. A device based on this invention considerably increases the distance a rider can travel without stopping, also increases the average speed of the bicyle on a given distance and reduces the fluctuation of the current velocity.

Description

DEVICE FOR REDUCING CYCLIC TORQUE FLUCTUATIONS FOR A VEHICLE DRIVEN BY FOOTPEDALS, PARTICULARLY FOR BICYCLES OR TRICYCLES AND

VEHICLE, PARΉCULARLY BICYCLE OR TRICYCLE APPLYING THE DEVICE BACKGROUND OF THE INVENTION The mvenuon concerns a device for reducing cyclic torque fluctuaϋons for a vehicle driven bv footpedals, particularly for bicycles or tricycles and further a vehicle, especially bicycle or tπcycle for the use of the proposed device

The developments relating to the dπve systems of vehicles dπven by muscles of a human being, especially by foot has mostly been concentrated to a considerable degree on the gear and the means contacting the chain or other power transmission elements with the dπven wheels

In the US-4 872 695 to S Tomba et al it is proposed to apply elongated tube-type means for multiplying the torque The tube of these means contains in slide connection an inner tube contacted with the pedals and their object is to maintain a substantially horizontal position of the tread surface of the pedals One shortcoming of this solution is that the connection of the crank and the pedal needs a lot of modification A further disadvantage should be seen in the fact that the proposed device fails to work properly in certain positions of the crank , I e some dead points of the drive are overcome but other are created and thev should be taken into account in the further development SUMMARY OF THE INVENTION

The present mvenuon is based upon the recognition that one or both pedals and the bicycle frame are connected directly or indirectly with one or more traction power storage means (e g draw -spring), the torque fluctuation will be reduced considerably The position of the tracuon power storage means are also important Based upon facts and data gathered from several tests of the main prototypes of the device it is clearly proved that the action radius (the farthest distance a biker can travel without stopping) has considerabK improved

One of the main objective met is the traction power storage means can be put in or taken out of use dunng operation The most important common achiev ement of all major embodiments of this invention is that these devices are applicable to practically all kinds of bicycles

The main feature of the first embodiment of the invention is the traction power storage means are joint with the pedals by the help of a pulley-guided wire-rope

The main feature of the second embodiment of the invention is that the traction power storage means are in pairs, so these pairs of traction power storage means either roll or do not roll upon pulleys

The mam feature of the third embodiment of the invention is the traction power storage means can be connected with the pedals by the help of their common hook and a half-sickle shaped hanger of the pedal The main feature of the fourth embodiment of the invention is the traction power storage means can be connected separately with the pedal. These embodiments are defined by the attached claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is illustrated in more detail in the drawings In the descπption, in the drawings and in the claims the bicycles and the devices are illustrated in such a way that the two wheels and the cranks of the pedals are at right angles to the ground surface and the two wheels are in the same plane FIG l shows an alternative construction of the footpedal

FIG 2 is an alternative construction of the connection between the pedals and the wire- ropes

FIG 3 shows an alternative construction of the connection between the pedals and the draw-spπng traction power storage means FIG 4 shows a view of the bicycle completed with a first basic embodiment of the device proposed by the invention FIG 5 shows the section "A - A" of the first basic embodiment presented in FIG 4

FIG 6 shows a view of the bicycle completed with a second basic embodiment of the device for reducing cyclic torque fluctuations FIG 7 shows an enlarged detail of the second basic embodiment according the FIG 7, FIG 8 shows another enlarged detail of the second basic embodiment according the FIG 7,

FIG 9 is a view of the bicycle completed with a third basic embodiment of the device for reducing cyclic torque fluctuations as proposed by the invention FIG 10 shows a view of the third basic embodiment in conformity FIG 9 in marked "A- A" section, FIG 1 1 is a construction variation of the auxiliary frame,

FIG 12 shows the details of the connections among the swing arms, the draw-spπng traction power storage means and the common hook, FIG 13 shows a view of the bicycle completed with a fourth basic embodiment of the device proposed by the invention for reducing cyclic torque fluctuations FIG 14 shows a view of the fourth basic embodiment in conformity with FIG 13 tn marked "A- A" section, FIG. 15 shows a construction vaπation of the connection between the hook and the half- sickle shaped hanger; FIGS. 16 and 17 shows a construction variation of the attached half-sickle shaped hanger. DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIG. 1 presents the details of the pedal 3 that belongs to the first and second basic embodiments. As it can be observed in FIG. 1 a beam 26 forms a portion of the pedal 3 nearest the crank 2 The beam 26 has a heightened upper portion 261 slid halfway between the pedal 3 and the crank The heightened upper portion 261 has some open- ended holes 26a, 26b and 26c The axes of these holes are parallel with the central pivot 24 of the pedal 3 The pivot 24 is fixed in a frame 7 which is supported by a driven wheel 16 and a first wheel 162 Between the driven wheel 16 and the pedal 3 a power transmission element of known construction, e. g. a chain is arranged.

In FIG. 2 the connection among the pedal 3, the crank 2 and the wire-rope 6 can be observed. This solution belongs to the first basic embodiment The two-link pedal linkage 5 is bent out of metal wire and surrounds that tube-like portion 25 from both sides and the top which is around the central pivot 24 of the pedal 3. The two-link pedal linkage 51 also surrounds the beam 26 of the pedal 3 from below and from the crank 2 by the help of both of its stems, both of the stems end in links 5b and 5c, and are above the tread surface t of the pedal 3 The bottom end of the wire-rope 6 ends in a cord-eye 73 and this cord-eye is connected with a chain lug 74 and this chain lug 74 is connected with both links 5b and 5c of the two-links pedal linkage 51

FIG. 3 shows the connection among the pedal 3. the crank 2 and the draw-spπng traction power storage means 4d, 4e and 4f as it can be observed. This solution belongs to the second basic embodiment wherein modified pedal linkage 51 1 is formed out of the two-link pedal linkage 51 in such a way that some new links 5e, 5d and 5f are bent out of another metal wire and added to former. The two outside links 5e and 5f face both links 5c and 5b of the two-link pedal linkage 51

FIGS. 4 and 5 show the first basic embodiment of the device for reducing cyclic torque fluctuations. The front ends of the traction power storage means 4a, 4b, 4c, 4d, 4e and 4f connect to the frame 7 by means of a manyholed linkage 8 in the environment surrounding the axle of the handle-bar 22. The longitudinal axes 10 of the traction power storage means 4a, 4b, 4c, 4d, 4e and 4f are approximately hoπzontal and parallel with each other and their positions are constant. They are connected with a hanger 30. As can be observed, some traction power storage means 4a, 4b and 4c, are at the right hand side of the frame 7 one being under the other. Similar traction power storage means, 4d, 4e and 4f, are at the left hand side of the frame 7 one being under the other

With reference to the FIGS 4 and 5 on both sides of the bicycle at least one, preferably the middle, traction power storage means 4b and 4e is continually bound to the guiding-element 27 The cylinder-like guiding element 27 presents a hole at both of its ends suited to take the front bolt pin 28 and the back bolt pin 32 The connection between the hanger 30 of the power storage means and the guiding element 27 is achieved by the front bolt pin 28 The connection between the guiding element 27 and the wire-rope 6 is achieved

With reference to the FIGS 4 and 5 on both sides of the bicycle the hanger 30 of the power storage means, the guiding element 27 and the wire-rope 6 are located partly between a pair of tube segments 31a and 31 b The common longitudinal axis 10 of the pair of tube segments 31a and 31 b is approximately horizontal and coincides with the longitudinal axis 101 of the middle traction power storage means 4b or 4e Each pair of tube segments 31a and 31b presents a pair of elongated, straight and common grooves, one pair of grooves is at the top while the other is at the bottom of the tube-segment 31a and 31b, said grooves present a constant width v and are symmetπcal when projected to the imaginary and vertical plane passing through the common axis 10 The pair of tube segments 3 la and 31b, connect indirectly with more points to the frame 7 The front end of the pair of tube segments 3 l a and 31b are cut off symmetrically so from top view it looks like the two edges of an imaginary pair of opened scissors, as shown in the drawings

On both sides of the bicycle, as presented in FIGS 4 and 5, the hanger 30 of the storage means is equipped with two rectangular sheets, 30a and 30b, and the hinge-like back sides of these sheets 30a and 30b are suited to take the front bolt pin 28 The axis of said front bolt pin 28 is perpendicular to the common longitudinal axis 101

On the inside surface of the sheets 30a and 30b some pairs of hooks 30c and 30d are positioned to catch each of the back-end links 4c 1 , 4dl, 4fi of the power storage elements 4c, 4d and 4f , as can be partly observed The outside surface of the sheets is connected to a pair of common plate springs 30e and 30f The plate spπngs are intended to distance the sheets 30a and 30b from each other

With reference to the FIGS 4 and 5 it can be observed that those back-end links 4c 1, 4dl, 4fl of the power storage means 4c, 4d and 4f, that are not permanently bound to any hanger 30 have a channel iron 72 aσanged partly around them These channel irons 72 have their open side out, and also have two longitudinal closed-ended grooves 721 fully penetrating them From bottom view the longitudinal grooves 721 cover each other and are suited to take a veπical bolt pin 341 The bolt pin 341 passes over a yoke 34, and the yoke is made up of two L-formed angle levers coveπng each other from bottom view Each of the corresponding back-end links 4c 1, 4dl and 4fl lies on its yoke 34 keeping the corresponding traction power storage means 4c, 4d and 4f in a prestressed condition The realization of a direct connection between the back-end link, 4c, 4d and 4f and a pair of hook 30c and 30d depends on the position of the relevant yoke 34

With reference to the FIG 4 it can be observed that each of the pairs of tube segments 31a and 31b is connected with a pair of support lugs 23a to hold an axle of a pulley 23 The pulleys 23 are approximately below the rearmost portion of the seat 15 It can be observed that the wire-rope 6 lies on the pulley 23 The pair of tube segments 31a and 3 lb joins into a tube 32 of the approximately same diameter The tube 32 connects with the upper end of a roughly vertical support 564 The bottom part of the vertical support 564 connects with a portion of the frame 7 around the axle 161 of the driven wheel 16 From side view the axes 1 1 of those pieces of wire-ropes 6 connecting indirectly to the pedals 3 always fall into the angle a between the vertical to the ground surface 13 and the direction 14 opposite to the course of the bicycle

FIGS 6, 7 and 8 show the second basic embodiment of the device for reducing cvclic torque fluctuations proposed bv the invention The bottom end of the first right traction power storage means 4a is connected with the first link 54 of the modified pedal linkage 51 1 of the πght pedal 3 The upper end of the first right traction power storage means 4a is connected with the upper end of the first left traction power storage means 4d The bottom end of the first left traction power storage means 4d is connected with the first link 5e of the modified pedal linkage 5 1 1 of the left pedal 3 Therefore we consider now the first traction power storage means 4a and 4d which is the first pair of traction power storage means, the second and third pairs are constructed according to the same pattern

With reference to the FIG 6 it can be observed that the bottom ends of the traction power storage means have a longitudinal axis 10 and from side-view these axes 10 always fall into the angle a between the vertical to the ground surface 13 and the direction 14 opposite to the course of the bicycle

With reference to the FIGS 6, 7 and 8 it can be observed that two sleeves 371 and 372 are connected with the frame 7 via two arched metal bands 381 and two straight metal bands 382 Two ends of the common axle 36 are inserted into two sleeves 371 and 372 The common axle 36 is located behind the seat 15 falling roughly into an imaginary vertical plane passing through the whole frame 7 as can be partly observed The common axle 36 joins as many pulleys 351 , 352 and 353, as pairs of traction power storage means are installed. The first pair of traction power storage means is lies on the first pulley 351, the second and the third traction power storage means follow the same pattern respectively.

A longitudinal lid 39 can be fastened to the sleeves 371 and 372 by screws in many positions parallel to the vertical longitudinal imaginary plane passing through the whole frame 7. As many locking-gadgets 46 are applied to the lid 39 as the number of the pulleys 351, 352 and 353 on the common axle 36.

All of the locking-gadgets 46 include a tube-like twistable sleeve 48 and these twistable sleeves 48 are inserted into the lid 39 in such a way that the axes of the twistable sleeves 48 are passing through the middle of the groove of the corresponding pulley and also the common axle 36

With reference to the FIG 8 it can be observed the twistable sleeve 48 presents a sloping and perpendicular track 481 This track is as wide as the thickness of the wall of the twistable sleeve 48 The track 481 is a double supporter for a longitudinal beam 42 Both ends of the longitudinal beam 42 connect with two prestressed draw-spπng 44. The longitudinal beam 42 presents two similar open-ended holes near its middle portion as can be observed

These holes are suited to take two bolt pins 43 by their upper portion of smaller diameter 431. The longitudinal beam 42 lies on two compression springs 46, These compression spπngs 46 surround the lower part of the upper portion 431 of the bolt pins

Each bolt pin 43 presents a lower portion of bigger diameter

In the bottom-most position of the longitudinal beam 42 the bolt pins 43 prevent the corresponding third pair of traction power storage means 4f and 4c from rolling on their pulley 35. FIGS. 9, 10, 1 1 and 12 show the third basic embodiment of device for reducing cyclic torque fluctuations

With reference to the FIGS. 9 and 10 it can be observed that auxiliary frames 56a and 56b mount the frame 7. The right auxiliary frame 56a is on the right side of the bicycle and the left auxiliary frame 56b is on the left side, and they are symmetrical to each other. From side view they cover each other. Both auxiliary frames 56a and 56b are permanently fastened with their upper parts 56 to a screw 71 of the cleft-couplmg screwed portion of the frame 7 below the seat 15. The auxiliary frames 56a and 56b are also permanently fastened with the bottom of their veπical suppoπ 564 to a poπion of the frame 7 around the axle 161 of the driven wheel 16. Both auxiliary frames 56a and 56b present the same parts namely the roughly hoπzontal upper part 561 , the roughly veπical back part 562, the roughly hoπzontal extension 563 and the roughly vertical support 564. The auxiliary frames 56a and 56b are either one single piece or joined together from those parts by screws or πvets FIG 9 and 10 show that on both sides of the bicycles some approximately straight forward-pointing elongated swing arms 591, 592 and 593 are fastened to the back part 562 by means of screws or πvets These screws or πvets fall in one imaginary line e The parallel keeper 60 is fastened to the swing arms 591, 592 and 593 by means of screw or πvets The screws or πvets also fall in one imaginary line f A forward- extended lever 601 connects with the top of the parallel keeper and is approximately at a right angle to it The two lines e and f are always parallel to each other Screws and πvets at the junction of the bottom-most swing arm 593 and the parallel keeper 60 are connected with the screws or rivets at the junction of the upper swing arm 591 and the back part 562 by a prestressed draw-spring 61

The front ends of the swing arms 591 , 592 and 593 mount the upper end of a traction power storage means 4d, 4e and 4f In case draw-spring traction power storage means are used, each of the traction power storage means 4d, 4e and 4f, will be pulling on the front end of the corresponding swing arm, as illustrated in the FIGS 9 and 12

In case more than one swing arms 591, 592 and 593 are applied on the same side, the bottom-most swing arm 593 will always be the shortest The front end of the middle swing arm 592 falls approximately into an imaginary vertical line passing through the common axle 12 of the pedals An attached half-sickle shaped hanger 5ad contacts each of the pedals 3

With reference to the FIG 1 1 it can be observed that sometimes a bar 565 is applied between the screw 71 of the cleft-coupling screwed part of the frame 7 and the front end of each of the upper parts 561

With reference to the FIG 12 it can be observed that a manyholed stem 63 1 of a common hook 63 is fastened preferably to the bottom-most end of the middle traction power storage means 4e Each of the other traction power storage means 4d and 4f, are connected to a manyholed stem 631 All of the manyholed stems 63 1 are connected by a common screw 632 In case draw-spπng traction power storage means are applied, the bottom-most end of each of those traction power storage means 4d, 4e and 4f will be pulled onto the upper end of the corresponding manyholed stem 631

FIG 9 presents that when the extension 601 is pushed down, the common hooks 63 connect the attached half-sickle shaped hanger 5ad

FIGS 13 and 14 show the fourth basic embodiment of the device for reducing cyclic torque fluctuations according to the invention A pipe-clip 66 is fastened to the frame 7 approximately halfway between the axle 22 of the handle-bars and the seat 15

The foremost points 58al and 58bl of the πght and left tiltable frame 58a and 58b is fastened to the bottom part of the pipe-clip by a bolt 661 The tiltable frames 58a and 58b are symmetrical from bottom view and cover each other from side view. Each of the tiltable frames consists of a straight front portion and an arched back portion. The two front portions run parallel to each other an are 10-30 millimeters apart. The back portions also run parallel to each other and are 100-200 millimeters apart. Each of the back portions have a downward-slanting rearmost part 58al 1.

The traction power storage means 4a, 4b and 4c - via the swing arms 591, 592 and 593 - are joint to those downward-slanting rearmost parts 58a 1 1 of the back portions of the tiltable frames 58a. Each of the parallel keepers 60 is fastened to the corresponding swing arms. Each of the prestressed draw-spπngs 61 is connected to the corresponding screws or πvets FIG 13 shows the connection of the back portions, the swing arms, the parallel keepers 60 and the traction power storage means 4a, 4b and 4c are built-up in the same way as explained in connection with FIG. 9

A hook 62 is fastened to the bottom-most end of each of the traction power storage means 4a, 4b and 4c On both sides the bottom-most of the hooks 62 is the nearest, and the highest of these hooks 62 are the farthest from the dπven wheel 16. The hooks 62 are positioned to be able to get in connection with the half-sickle shaped hanger 5a or the attached half-sickle shaped hanger 5ad, as illustrated in FIGS. 13 and 15

As it can be seen in FIG 13 under the seat 15 two pipe-clips 671 are fastened to the frame 7, some distance apart These pipe-clips are connected by a grooved arch 67 The forward looking and the outer sides of this grooved arch 67 resemble the arcs of two imaginary concentπc circles The bolt pin 661 is the common center of these circles The grooves 671 1 in the forward iooking side of this grooved arch 67 are wedge-shaped.

The front portions of the tiltable frames guide a elongated lock-bolt 68 The rearmost end 681 of this lock-bolt fits into the w edge-shaped grooves 67 The foremost end 682 of the same lock-bolt 68 is joint to the shorter stem of an L-shaped angle lever 69 The longer stem of this angle lever can be pushed against a compression spring 691

With reference to the FIG 13 it can be observed that an attached half-sickle shaped hanger 5ad and a counterbalance 64 are fixed to each of the pedals 3 If the tiltable frames 58a and 58b are not in the highest possible position then one or more hooks 62 connect with the attached half-sickle shaped hanger 5ad

With reference to the FIG 15 it is shown that the half-sickle shaped hanger 5a, its stem 5a 1, the half-sickle 5a 1 1 and the beam 26 are all made of a single piece This stem 5a 1 is above and about at a right angle to the surface t of the tread of pedal 3. The stem 5a 1 almost touches the plane of the outside surface pk of the crank 2 The stem 5al bends away from the plane of the outside surface pk of the crank 2 towards the surface t of the tread 20-60 millimeters over this surface t The stem Sal further widens into the half-sickle 5a 1 1 20-40 millimeters above the surface t of tread

The foremost point Fa of this half-sickle 5al 1 is higher above the surface t of the tread than its rearmost point Fb A counterbalance 64 is attached to the opposite surface 11 of the pedal 3 by a U-shaped stem 641. The two screwed ends of this U-shaped stem 641 are bent around the tube-like portion 25 of the pedal 3

With reference to the FIGS. 16 and 17 it can be seen at the attached half-sickle shaped hanger 5ad is made of one single piece with its two stems 5ac and half-sickle 5a 1 1 These stems 5ac are pulled against the closest side of the beam 26 to the crank 2 by two screwed stems 651 and 651 1. There are two holes on both stems 5ac One falls approximately into the plane of the surface t of tread while the other falls approximately into the plane of the opposite surface tl

One of the screwed stems 651 runs through holes in the plane of the surface t of the tread while passes over the beam 26 and bends around the tube-like portion 25 The other screwed stem 651 1 runs through holes in the plane of the opposite surface tl while it also passes beneath the beam 26 and bends around the tube-like portion 25 The ends of these screwed stems 651 and 651 1 are fixed by nuts

With reference to the FIGS 16 and 17 it can be seen that the upper portion of the stems 5ac and the half-sickle 5a 1 1 and the counterbalance 64 are the same as it was explained in FIG 15

Claims

CLAIMS:

1 A device for reducing torque fluctuations, and especially cyclic fluctuations for bicycles and tπcycles dπven by footpedals (3) attached to cranks (2), having a common axle (12) pivoted in a frame (7) supported on a front wheel (162) and a dπven wheel ( 16) connected with a dπve containing the footpedals (3), the device comprising at least two elongated elements of controllable length for ensuπng torque in a dead point of any of the footpedals (3), characterized m that the elongated elements constitute means for storing and transmitting traction power (4a, 4b, 4c, 4d, 4e, 4f), each of them having two end parts, each with a respective link, one of the links being adapted to be fastened directly or indirectly to the frame (7) of a bicycle or tπcycle, the other one being adapted to be fastened directly or indirectly, for example by the means of a wire-rope (6), to the environment of the connection of the footpedal (3) and its attached crank (2)

2 The device according to claim l , characterized in that each of those portions of the traction power storage means (4a, 4b, 4c, 4d, 4e, 4f) and the wire-ropes (6) that being connected directly or indirectly to the environment of the connection of the pedal (3) and the crank (2) having a longitudinal axis ( 10, 1 1 ), dunng operation from side view the axes ( 10) always fall into the angle (a) between the vertical (13) to the ground surface and the direction opposite ( 14) to the course of the bicycle

3 The device according to claims 1 and 2. characterized in that the traction power storage means (4a, 4b, 4c 4d, 4e, 4f) is either a metal draw-spring or a plastic draw-spπng or a gum-rope or a gas-filled telescope

4 The device according to claims 1 , 2, 3 and, characterized in that the traction power storage means (4a, 4b, 4c. 4d, 4e, 4f) belonging to the same the bicycle can be put in or taken out of operation one bv one or ali at once 5 The device according to claims 1 , 2 and 3, characterized in that each of the traction power storage means (4a, 4b, 4c, 4d, 4e, 40 being in a constant, parallel and roughly hoπzontal position, and each of the traction power storage means (4a, 4b, 4c, 4d, 4e, 4f) ending in a back-end link (4c 1 , 4d l , 4fl ), and those the traction power storage means (4a, 4b, 4c, 4d, 4e. 4f) that are connected with the same pedal being m such a position where one traction power storage means (4a, 4b, 4c, 4d, 4e, 4f) is under the other, and the front ends of the traction power storage means (4a, 4b, 4c, 4d. 4e, 4f) are connected with a frame (7) bv means of a manyholed linkage (8) in the environment of that portion of the frame (7) which surrounds an axle of a handle-bar of the bicycle

6 The device according to claims 1 , 2, 3 and 5, characterized in that in case of more traction power storage means (4a, 4b, 4c, 4d, 4e, 4f) being applied on the same side of a bicycle preferably the back-end link (4fl ) of the middle traction power storage means (40 is permanently bound to a cylinder-like guiding element (27) and a storage means (4a, 4b, 4c, 4d, 4e, 40 hanger (30) via a front bolt pin, and the hanger (30) being connected with a cylinder-like guiding element (27) which is connected with a wire-rope (6) via a back bolt pin (32), the hanger (30), the guiding element and the wire-rope (6) are located partly between a pair of tube segments (31a, 31 b), the pair of tube segments (31a, 31b) having a substantially hoπzontal longitudinal common axis (101), the axis (101) coincides with the axis (10) belonging to the permanently bound traction power storage means (4a, 4b, 4c, 4d, 4e, 40

7 The device according to claims 1, 2, 3, 5 and 6, characterized m that each of the tube segments (31a, 31b) having a pair of elongated straight and common grooves, one of the grooves being at the top while the other being at bottom of the pair of tube segments (31a, 3 lb), the pair of grooves having a constant width (v) and the pair of grooves being symmetrical when projected to that imaginary and vertical plane passing through the longitudinal common axis ( 101 ), and at their front end the tube segments (31a, 31b) being cut off symmetrically so from top view the front end looks like the two edges of a pair of opened scissors, and the pair of tube segments (31a, 31b) are fastened to the frame (7) of a vehicle, especially bicycle

8 The device according to claims 1, 2, 3, 5, 6 and 7, characterized in thai two rectangular sheets (30a, 30b) being the principal constituents of the hanger (30) of the storage means (4a, 4b, 4c, 4d, 4e, 40, back sides of the hinge-like sheets (30a, 30b) are suited to take the front bolt pin (28), the front bolt pin (28) having an axis perpendicular to the common axis (101) of the pair of tube segments (31a, 31b), and on the inside surface of the sheets (30a, 30b) at least two pairs of hooks (30c, 30d) are positioned to catch each of the back-end links (4c 1 , 4d l , 4fl ) of the traction power storage means (4a, 4b. 4c, 4d, 4e, 40, and the outside surface of the sheets (30a, 30b) is connected to a pair of common plate spπngs (30e, 300 to secure predetermined distance between the sheets (30a, 30b)

9 The device according to claims 1, 2, 3, 5, 6, 7 and 8, characterized m that the back-end links (4c 1, 4dl, 4fl) having a channel iron (72) partly around them where the channel irons (72) have their open side out, further they have two longitudinal closed- ended grooves (721 ) fully penetrating them, from top view the longitudinal grooves (721 ) cover one another and are suited to take a vertical bolt pin (341 ), the bolt pin (341 ) passing over a yoke (34), from top view the yoke (34) being made up of two L-formed angle levers coveπng one another, each of the corresponding back-end links (4c 1, 4dl, 4fl ) lying on one the particular yoke (34) keeping the corresponding traction power storage means (4c, 40 in a prestressed condition

10 The device according to claims 1, 2, 3, 5, 6, 7, 8 and 9, characterized in that each of the tube segments (31a, 31b) having a pair of support lugs (23a) to hold an axle of a pulley (23) , the pulleys (23) being approximately below the rearmost portion of a seat (15) of a bicycle, the wire-rope (6) lying on the pulley (23), the pair of tube segments (31a, 3 lb) joining into a tube of approximately the same longitudinal axis and diameter nght after the pulley (23), the tube (32) being connected with the upper end of a substantially vertical support (564), the bottom part of which is connected with a portion of the frame (7) around the center (161) of the dπven wheel (16)

11 The device according to claims 1, 2, 3, 5, 6, 7, 8, 9 and 10, characterized in that the bottom part of the wire-rope (6) ending in a cord-eye (73), which is connected with a chain lug (74), the chain lug (74) is connected with both links (5b, 5c) of a two- link linkage (54) of the footpedals (3) or with a middle hole of a beam (26b), the two- link linkage (54) is bent out of a metal wire and surrounds both sides and the top of a tube-like portion (25) of the footpedal (3), the tube-like portion (25) of the footpedal (3) is joint to a central pivot (24), the central pivot (24) is adapted to be inserted into the end of the crank (2), a portion of the footpedal (3) nearest the crank (2) is a beam (26), two stems of the two-links linkage (54) surround the beam (26) from below and from the direction of the crank (2), the two stems ending in the links (5b, 5c) above the surface (t) of tread of the footpedal (3), and in other cases the beam (26) having a heightened upper portion (261 ) slid halfway between the footpedal (3) and the crank (2), some open-ended holes (26a, 26b, 26c) being placed in the heightened upper portion, the holes (26a, 26b, 26c) having a parallel axis or axes with the central pivot (24), each of the holes (26a, 26b, 26c) is suited to get into a direct or indirect contact with the traction power storage means (4a, 4b, 4c, 4d, 4e, 40

12 The device according to claim 1 1 , characterized in that a modified footpedal (3) linkage (51 1 ) connecting the beam (26) with the footpedal (3), the modified footpedal (3) linkage (51 1 ) consisting of at least two links (5e, 50 bent out of same piece of metal wire, wherein at least two of the links (5e, 50 lie outside and at least two of them lie inside, further the links (5e, 50 lying outside face both links (50 of the two-link footpedal (3) linkage (51 1 )

13 The device according to claims 1, 2, 3, 4, 1 1 and 12, characterized in that the bottom end of first right the traction power storage means (4a) being connected with the first link (5e) of the modified footpedal (3) linkage (51 1 ) or a first hole (26a) of the beam (26) of the nght footpedal (3), the upper end of the first nght traction power storage means (4a) being connected with the upper end of the first left traction power storage means (4d), the bottom end of the first left traction power storage means (4d) being connected with the first link (5e) or hole (26a) of the left footpedal (3) wherein the further pairs of the traction power storage means (4a, 4b, 4c, 4d, 4e, 40 are built up m a similar wav 14 The device according to claims 1 , 2, 3, 4, 1 1, 12 and 13, characterized m that two sleeves (371, 372) are connected via two arched and two straight metal band (381, 382) with the frame (7), the two ends of a common axle (36) are adapted to be inserted into the two sleeves (371, 372), the common axle (36) is located behind the seat (15) and above the dπven wheel (16) of a bicycle, the common axle (36) falling substantially into an imaginary vertical plane passing through the whole of the frame (7), the common axle (36) contacting as many pulleys (351, 352, 353) as pairs of traction power storage means (4a, 4b, 4c, 4d, 4e, 40 being installed where the pulleys (351, 352, 353) constitute first, second and third pulleys (351, 352, 353), the first, second and third pairs of traction power storage means (4a, 4b, 4c, 4d, 4e, 40 lying on the first, second and third pulleys (351, 352, 353) respectively

15 The device according to claims 1, 2, 3, 4, 1 1 , 12, 13 and 14, characterized in that a longitudinal lid (39) is fastened by screws to the sleeves (371, 372) allowing fixing U in many positions parallel to the vertical longitudinal imaginary plane passing through the whole frame (7), and as many locking-gadgets are applied as the number of the pulleys (351, 352, 353) joining to the common axle (36), the locking-gadgets (46) include a tube-like twistable sleeve (48), which can be inserted into the longitudinal lid (39), and axes of the twistable sleeves (48) pass through the middle of a groove of the corresponding pullevs (351 , 352 353) and also the common axle (36) 16 The device according to claims 1 , 2, 3, 4, 1 1 , 12, 13, 14 and 15, characterized in that the twistable sleeves (48) are prepared with sloping and perpendicular track (481), the track (481) being as wide as the thickness of the wall of the twistable sleeve (48), the track (481 ) forms a doubled support for a longitudinal beam (42), the two ends of which are connected with two prestressed draw-spπngs (44) and the longitudinal beam has two open-end holes near its middle part, the two holes being suited to receive two bolt pins (43) by their upper portion (431 ) of smaller diameter, the longitudinal beam (42) lying on two compression spπngs, the compression spπng surround the lower part of the upper portion (431), wherein the longitudinal beam (42), the bolt pins has a lower portion of bigger diameter, in the bottommost position of the longitudinal beam (42) the bolt pins (43) by their lower portions prevent the corresponding pair of traction power storage means (4a, 4b, 4c, 4d, 4e, 40 from rolling on the pulley (351, 352, 353)

17 The device according to claims 1, 2, 3 and 4, characterized in that on the right side of a bicycle a nght auxiliary frame (56a) and on the left side of same bicycle a left auxiliary frame (56b) is adapted to be permanently fastened with their upper parts (561) to a screw (71) of a cleft-coupling screwed part of the frame (7) below the seat ( 15), the auxiliary frames (56. 56b) are permanently fastened to a portion of the frame (7) around the axle (161) of the dπven wheel (16) with their bottom end of their substantially vertical support (564), the auxiliary frames (56a, 56b) being symmetπcal to each other when projected to the imaginary vertical plain passing through the whole of the frame (7), each of the auxiliary frames (56a, 56b) consist of the same parts an about hoπzontal upper part, an about vertical back part, an about hoπzontal extension and the substantially vertical support (564), the auxiliary frames (56a, 56b) being either joined together from the parts by screws or πvets or each of the auxiliary frames (56a, 56b) form one single piece, in certain cases a bar (565) applicable between the screw (71 ) of the cleft-coupling screwed part of the frame (7) and the front end of each of the upper parts (561)

18 The device according to claims 1, 2, 3, 4 and 17, characterized in that on both sides of a bicycle at least two substantially straight approximately forward-pointing elongated swing arms (591 , 592, 593) are arranged, they are adapted to be fastened to the back part (562) by means of screws or rivets, the screws or πvets falling in one imaginary line (e), a parallel keeper (60) being adapted to be fastened to the swing arms (591 , 592, 593) as well by means of screws or nvets, the screws or πvets fall in another imaginary line (e, 0, the imaginary lines (e, 0 are parallel with each other, and there is a forward-extended lever (60! ) connecting with the top of the parallel keeper (60), wherein the lever (601) lies at nght angle to the parallel keeper (60) 19 The device according to claims 1 , 2, 3, 4, 17 and 18. characterized in that each of front ends of the swing arms (591, 592, 593) being adapted to mount the upper end of a traction power storage means (4d, 4e, 40, in case draw-spring traction power storage means (4a, 4b, 4c, 4d, 4e, 40 are applied, each of them is pulling on the front end of the conesponding swing arms (591, 592, 593), and when more than one swing arms (591, 592, 593) are applied on the same side, the bottom-most swing arm (593) being the shortest of all and the front end of the middle swing arm (592) falling substantially into that imaginary vertical line passing through a common axle (12) of the footpedals (3), and there is a prestressed draw-spπng connection (61 ) between the screw or πvet at the joining of the bottom-most swing arm (593) and the parallel keeper (60) and the screw or nvet at the joining of the upper swing arm (591) and the back part (562)

20 The device according to claims 1, 2, 3, 4, 17, 18 and 19. characterized in that a manyholed stem (631) of a common hook (63) being adapted to be fastened preferably to the bottommost end of the middle traction power storage means (4e), whereas each of the other traction power storage means (4d, 40 are connected to the manyholed stem (631 ), and all of the manyholed stems (631) are linked with a common screw (632), wherein when draw-spπng traction power storage means (4d, 4e, 40 are applied, the bottom most end of each of the traction power storage means (4d, 4e, 40 is pulled onto the upper end of the corresponding manyholed stem (631)

21 The device according to claims 1, 2, 3, 4, 17, 18, 19 and 20, characterized in that the beam (26) of the footpedal (3) being one piece together with a half-sickle shaped hanger (5a) with its stem (5a 1), the stem (5a 1) is arranged above the surface (t) of the tread and substantially at right angle to the surface (t), the stem (Sal) is almost in touching contact with the plane (pk) of the outside surface of the crank (2), 20-60 millimeters above the surface (t) of the tread, the stem (5a 1) is bend away from the plane (pk) of the outside surface of the crank (2) towards the surface (t) of the tread, and 20- 40 millimeters above the surface (t) of the tread, the stem (5al) widens into a half-sickle (5al l ), and the half-sickle (Sal 1 ) having a foremost point (Fa) and a rearmost point (Fb), wherein the foremost point (Fa) extends over the surface (t) of tread higher than the rearmost point (Fb), the footpedal (3) having an opposite surface (tl ) that is on the opposite side to the surface (t) of tread, and a counterbalance (64) is attached to the opposite surface (tl) by a U-shaped stem (641) with two screwed ends bent around the tube-like portion (25) of the footpedal (3)

22 The device according to claims 1, 2, 3, 4, 17, 18, 19, 20 and 21, characterized in that an attached half-sickle shaped hanger (5ad) made of a single piece with its two stems (5ac), the stems (5ac) are pulled against the side of the beam (26) nearest the crank (2) by means of two screwed stems (651 , 651 1 ), the stems (651 , 651 1 ) of the attached half-sickle shaped hanger (5ad) having two holes apiece one falling approximately into the plane of surface (t) of tread while the other falling approximately into the plane of the opposite surface (tl ), one of these screwed stems (651 ) running through holes in the plane of the surface (t) of tread while passing over the beam (26) and bending around the tube-like portion (25), the other of these screwed stems (651 1 ) is provided through holes in the plane of the opposite surface (tl ) while passing beneath the beam (26) and bending around the tube-like portion (25), and the ends of the screwed stems (651 , 6511 ) are fixed by nuts

23 The device according to claims 1, 2, 3, 4, 18, 19, 21 and 22, characterized in that a pipe-clip (66) is fastened to the frame (7) approximately halfway between the handlebars and the seat (15), further two tiltable frames (58a, 58b) having one foremost point (58al, 58b 1 ) apiece, the tiltable frames (58a, 58b) via the foremost points being fastened to the bottom part of the pipe-clip by a bolt, the tiltable frames (58a, 58b) are symmetπcal from top-view and cover one another from side-view, each of the tiltable frames (58a, 58b) constitute a straight front portion and an arched back portion, the front portions running parallel to each other and being 10-30 millimeters apart, the back portions running parallel to each other and being 100-200 millimeters apart, each of the back portions having a downward-slanting rearmost part (58a 11), the traction power storage means (4a, 4b, 4c) via the swing arms (591, 592, 593) are connected to the downward-slanting rearmost part (58a 1) of the back portion, each of the parallel keepers (60) is fastened to the corresponding swing arms (591, 592, 593), each of the prestressed draw spπngs (61) being connected to corresponding screws or πvets, a hook (62) is fastened to the bottom-most end of each of the traction power storage means (4a, 4b, 4c), on both sides the bottom-most of the hooks (62) is the nearest to the dπven wheel ( 16), and the highest of the hooks (62) lies most far from the dπven wheel (16), the hooks (62) are positioned to be able to get in contact with the half-sickle shaped hanger (5a) or the attached half-sickle shaped hanger (5ad)

24 The device according to claims 1, 2, 3, 4, 18, 19, 21, 22 and 23, characterized in that approximately underneath the seat (15) two pipe-clips (671 ) are fixed to the frame (7) with a distance apart, the pipe-clips (671 ) are connected by a grooved arch (67), wherein from side-view the grooved arch (67) comprises two arcs of two imaginary circles, further the bolt (671 ) is their common center, and there are some wedge-shaped grooves (671 1 ) on the forward looking side of the grooved arch (67), the front portions of the tiltable frames (58a, 58b) guiding an elongated lock-bolt (68), the lock-bolt (68) has a rearmost and a foremost end (681, 682), the rearmost end (681) of the lock-bolt (68) fits into the wedge-shaped grooves (671 1), and the foremost end (682) of the lock-bolt (68) is contacted with an L-shaped angle lever (69) via its shorter stem, the angle lever (69) also is made with a longer stem, wherein the longer stem can be pushed against a compression spπng (691 )

25. A vehicle driven by footpedals (3) comprising at least one driven wheel ( 16), a frame (7) supported by wheels, a footpedal (3) pivoted in a crank (2) pivoted in the frame (7) for dπving the vehicle by the means of a power transition element from the footpedal (3) to the driven wheel (16), characterized in that it comprises connected to the footpedals (3) and the frame ( 7) a device for reducing torque fluctuations, especially cyclic fluctuations according to any one of claims 1 to 24

26. The vehicle as set foπh in claim 25, characterized in that it is made in the form of a bicycle

27. The vehicle as set forth in claim 25, characterized in that it is made in the form ofa tπcvcle