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WO2018127909A1 - Protection de sécurité d'hélice universelle pour moteur de pêche à la traîne - Google Patents

Protection de sécurité d'hélice universelle pour moteur de pêche à la traîne Download PDF

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Publication number
WO2018127909A1
WO2018127909A1 PCT/IL2018/050005 IL2018050005W WO2018127909A1 WO 2018127909 A1 WO2018127909 A1 WO 2018127909A1 IL 2018050005 W IL2018050005 W IL 2018050005W WO 2018127909 A1 WO2018127909 A1 WO 2018127909A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
safety guard
propeller
supporting member
trolling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IL2018/050005
Other languages
English (en)
Inventor
Gad ARAZI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2018127909A1 publication Critical patent/WO2018127909A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/16—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recesses; with stationary water-guiding elements; Means to prevent fouling of the propeller, e.g. guards, cages or screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/007—Trolling propulsion units

Definitions

  • the present invention relates to propeller guards, and more particularly, to an addon modular adjustable propeller safety guard for an electric trolling motor.
  • propellers Motor boats are driven by a propeller which is submerged under water.
  • the propeller has blades or wings like a fan, propelling the ship in the water. Since the propeller is under the surface of the water, rocks and underwater reefs may damage its blades. Swimmers and divers might be harmed by the propellers if they come in contact with them. In order to avoid such damage, a propeller guard should preferably be installed.
  • a trolling motor is a self-contained unit that includes an electric motor, propeller and controls, and is affixed to an angler's boat, either at the bow or stern. Electric Trolling motors are used for small-sized boats and kiaks, as they operate at a maximum of 36V.
  • Patent publication GB2152459 to Glen Robert Duncan, titled “Safety shielding of marine propulsion units”, discloses a safety cage for attachment to the submersible portion of an outboard motor unit having a generally vertical fin.
  • the device is designed to fit gasoline-powered motors and cannot be adapted for small electric motors such as a trolling motor.
  • a universal safety guard for a propeller of a trolling motor comprising: an adjustable motor holder having a pair of oppositely-facing omega-shaped sections, said pair of sections being disposed so as to surround the trolling motor on each side thereof, said pair of sections being attached to one another by attaching means;
  • At least one supporting member having a first end connected to said adjustable motor holder, and a second end connected to a motor shaft extending vertically from the motor
  • an outer ring having a rim, said outer ring being disposed circumferentially around said adjustable motor holder, so as to encompass the propeller;
  • said safety guard can fit any size of the trolling motor by adjusting said adjustable motor holder so as to surround the motor in accordance with its size, thereby protecting the propeller of the trolling motor from being damaged by rocks and reefs.
  • a safety guard for a propeller of a trolling motor.
  • the propeller may be damaged by hitting a rock, reef or any hard surfaces, and if the propeller is hit, the engine may be damaged as well. Therefore it would be desirable to use a guard.
  • a safety guard provides protection to swimmers against the potential harm of the propeller.
  • an outer ring having a rim which encircles the propeller of the motor. The rim has a width in the range of 40 to 60 mm, and a thickness in the range of 2-8 mm, thereby providing protection to the propeller against underwater obstacles such as rocks, reefs, etc.
  • a universal safety guard that can be adapted to trolling motors of any size by using an adjustable motor holder.
  • the motor holder is mounted on the trolling motor by using a pair of oppositely-facing omega-shaped sections which surround the trolling motor on each side.
  • the two sections are closed one against the other to securely fit around the trolling motor.
  • the two sections of the motor holder are closed one against the other by attaching means such as screws, bolts, fasteners and the like.
  • a supporting member having multiple holes disposed along the length thereof.
  • the supporting members are used for securely mounting the safety guard on a trolling motor.
  • a supporting member On the upper side of the trolling motor, a supporting member is attached at its first end to the motor holder and at its second end to the motor shaft.
  • a supporting member On the bottom side of the trolling motor, a supporting member is attached at its first end to the motor holder and at its second end to the fin.
  • the supporting members allow the safety guard of the present invention to fit a trolling motor of any kind having a fin and motor rod in various locations thereof.
  • the excess length of the supporting member may be easily cut off so as not to interfere with the propulsion stream.
  • the supporting member is attached to the motor shaft using a clamp having a hydrodynamic structure, and is connected by attaching means such as screws, bolts, fasteners and the like.
  • the supporting member is attached to the motor shaft using a two-sectioned connector, where each section is omega-shaped and both surround the motor shaft and are connected at the tabs of the omega by attaching means such as screws, bolts, fasteners and the like.
  • the safety guard of the present invention is made of rigid material such as plastic, metal, or any other suitable material.
  • a method for providing protection to a propeller of a trolling motor comprising: mounting an adjustable motor holder having a pair of oppositely-facing omega- shaped sections, said pair of sections being disposed so as to surround the body of the trolling motor at the propeller end thereof,
  • said safety guard can fit any size of the trolling motor by adjusting said adjustable motor holder so as to surround the motor in accordance with its size, thereby protecting the propeller of the trolling motor from being damaged by rocks and reefs.
  • Fig. 1 shows a perspective view of a safety guard for a trolling motor according to a preferred embodiment of the present invention
  • Fig. 2 shows the safety guard for a trolling motor of Fig. 1 with supporting members
  • Fig. 3 shows a rear perspective view of the safety guard of Fig. 1 installed on a trolling motor, using a clamp;
  • Fig. 4 shows a front perspective view of the safety guard of Fig. 1 installed on a trolling motor, using a clamp;
  • Fig. 5 shows a rear perspective view of the safety guard of Fig. 1 installed on a trolling motor, using a two-sectioned connector;
  • Fig. 6 shows a front perspective view of the safety guard of Fig. 1 installed on a trolling motor, using a two-sectioned connector;
  • Fig 7 shows the safety guard of Fig. 6 having the supporting member disposed at an angle.
  • a safety guard 30 having an adjustable motor holder 32, to be mounted on a trolling motor 50 (shown in Fig. 3).
  • Motor holder 32 has a pair of oppositely-facing omega-shaped sections 32a and 32b, which together fit around the circumference of the body of trolling motor 50. Sections 32a and 32b are connected together by connecting means inserted through holes 33a and 33b.
  • An outer ring 34 having a rim of approximately 40-60mm in width and approximately 2- 8mm in thickness, is disposed externally to adjustable motor holder 32, and a plurality of centrally-directed struts 36 are radially disposed on outer ring 34, which connect outer ring 34 to adjustable motor holder 32.
  • a safety guard 30 having supporting members 40a-b having multiple holes 41 formed along them.
  • Clamp 52 is used to securely fix supporting member 40a to motor rod 42 (shown in Fig. 3).
  • a safety guard 30 mounted on a trolling motor 50.
  • Safety guard 30 is fixed to trolling motor 50 by mounting adjustable motor holder 32 around trolling motor 50.
  • Adjustable motor holder 32 is made of two sections 32a and 32 b, which are both omega-shaped and oppositely-facing each other, thereby forming a circle of approximately 70mm to 110mm in diameter. Once motor holder 32 is mounted around motor 50, sections 32a-b are closed towards each other to securely fit around motor 50, and are then fixed in position by screws 48 placed through hole 33a on the tabs of the omega on the upper ends of 32a-b and hole 33b on the tabs of the omega on the lower ends of 32a-b.
  • Adjustable motor holder 32 can be adjusted to fit any diameter of a trolling motor 50, thereby providing a universal solution.
  • Outer ring 34 provides protection for propeller 38 against underwater obstacles such as rocks, reefs, etc. In addition, it also provides protection for swimmers against possible harm from propeller 38. Outer ring 34 provides maximum protection and minimum interference with the propulsion stream. Any additional accessories for providing protection, such as a net wrapped around the propeller, will only disturb the propulsion stream.
  • Guard 30 may be knocked off of motor 50 in the event guard 30 hits a hard surface. Therefore, in order to secure the attachment of guard 30 to motor 50, there is provided a supporting member 40a having one end connected to adjustable motor holder 32 via hole 33a, and a second end connecting to motor shaft 42 (partial length shown). Trolling motor 50 is mounted on motor shaft 42 which extends vertically upwards and typically connects to the boat stern for providing the power and control system to operate trolling motor 50.
  • Multiple holes 41 are formed in spaced-apart fashion all along supporting member 40a for allowing compatibility with all types of trolling motors 50 which have varied displacement between propeller 38 and motor shaft 42.
  • FIG 3 there is shown an example of a trolling motor 50 having its motor shaft 42 distanced from propeller 38 at a length compatible with eight holes 41 of supporting member 40a, when the first hole is near motor shaft 42 and the eighth hole is near propeller 38. Any excess of length of supporting member 40a is easily cut off.
  • Supporting member 40a is fixedly connected to motor shaft 42 by clamp 52.
  • Clamp 52 has an annular shape and encircles motor shaft 42 and is formed with holes corresponding to holes 41 of supporting member 40a.
  • a screw 48 is then inserted through clamp 52 and hole 41, to connect them and fix the position of supporting member 40a.
  • An additional supporting member 40b supports motor holder 32 from the bottom of trolling motor 50, and connects between motor holder 32, via hole 33b, at one end, and fin 46 at the second end.
  • FIG 3 there is shown an example of fin 46 at a distance from propeller 38 equal to nine holes 41 of supporting member 40b.
  • a screw 48 is inserted into the appropriate hole 41 and through fin 46, thereby securing supporting member 40b to motor 50.
  • the excess 40c of length of supporting member 40b including the tenth and eleventh holes, is to be removed (illustrated by jagged line A) because it may hydro- dynamically disturb the smooth flow of water during propulsion by motor 50.
  • the length of supporting members 40a-b and holes 41 formed therein allow for safety guard 30 to be adapted to any type of trolling motor 50.
  • FIG. 4 there is shown a front perspective view of safety guard 30 mounted on trolling motor 50 of Fig. 3. Supporting member 40b is shown without the excess 40c (shown in Fig. 3) length.
  • the rim of outer ring 34 is shown encompassing propeller 38, therefore enabling safe operation of propeller 38.
  • FIG. 5 there is shown a rear perspective view of another preferred embodiment of the safety guard 30 of the present invention.
  • a two-sectioned connector 44 is provided having each section omega-shaped, for connecting the second end of supporting member 40a to motor shaft 42, thereby securing safety guard 30 onto motor 50.
  • the sections of two-sectioned connector 44 are connected to each other having the second end of supporting member 40 placed in between them.
  • Screw 48 fixes two-sectioned connector 44 to motor shaft 42.
  • FIG 5 and 6 there is an example of a trolling motor 50 having fin 46 located closely to propeller 38, and therefore there is no need for a supporting member 40b. Screw 48 is inserted through hole 33b of motor holder 32 and into fin 46, thereby securing safety guard 30 to the bottom of motor 50.
  • Fig. 6 there is shown a front perspective view of the safety guard of Fig. 5.
  • FIG. 7 there is shown a rear perspective view of safety guard 30 mounted on trolling motor 50.
  • a support strut 53 is situated adjacent to the base of motor shaft 42, for providing support to motor shaft 42. Because of the presence of support strut 53, clamp 52 cannot be closed to surround the base of motor shaft 42, but can only be closed above support strut 53.
  • supporting member 42a may be connected between motor shaft 42 and motor holder 32, by deflecting supporting member 42a downwards at an angle so that it can reach motor holder 32 and be connected to it in the manner described above.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Catching Or Destruction (AREA)

Abstract

L'invention concerne une protection de sécurité universelle pour une hélice d'un moteur de pêche à la traîne ayant une extrémité d'hélice et une extrémité arrière, ayant un support de moteur réglable comprenant une paire de sections en oméga opposées, chaque section étant disposée de façon à entourer le moteur de pêche à la traîne de chaque côté de celui-ci. Les deux sections sont fixées l'une à l'autre par des moyens de fixation. Il est prévu au moins un élément de support s'étendant sur une longueur entre une première extrémité reliée au support de moteur réglable et une seconde extrémité reliée au moteur de pêche à la traîne à son extrémité arrière. Une pluralité d'entretoises dirigées de manière centrale sont disposées radialement sur la bague extérieure et se raccordent au support de moteur réglable. La protection de sécurité peut s'adapter à n'importe quelle taille du moteur de pêche à la traîne en réglant le support de moteur réglable de façon à entourer le moteur en fonction de sa taille, ce qui permet de protéger l'hélice du moteur de pêche à la traîne d'être endommagée par des roches et des récifs.
PCT/IL2018/050005 2017-01-03 2018-01-02 Protection de sécurité d'hélice universelle pour moteur de pêche à la traîne Ceased WO2018127909A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762441565P 2017-01-03 2017-01-03
US62/441,565 2017-01-03

Publications (1)

Publication Number Publication Date
WO2018127909A1 true WO2018127909A1 (fr) 2018-07-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2018/050005 Ceased WO2018127909A1 (fr) 2017-01-03 2018-01-02 Protection de sécurité d'hélice universelle pour moteur de pêche à la traîne

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WO (1) WO2018127909A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114180018A (zh) * 2021-11-30 2022-03-15 赣州潜行精密制造有限公司 一种无毂式轮缘螺旋桨

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2140099A (en) * 1938-04-29 1938-12-13 Winfield H Wise Outboard motor propeller guard
US4013033A (en) * 1976-01-28 1977-03-22 Porter Stephen G Weed guard for trolling motors
US5902157A (en) * 1998-06-11 1999-05-11 Boris; Donald R. Rudder attachment for trolling motor
US20030114052A1 (en) * 2001-01-18 2003-06-19 Schultz William C. Thrust enhancing propeller guard assembly
US20060166571A1 (en) * 2005-01-24 2006-07-27 Norman George I Shroud for a hydro thrust device
US20080220670A1 (en) * 2007-03-08 2008-09-11 Paul Simon Perkins Propeller shield apparatus for trolling motor
US20100167605A1 (en) * 2005-07-05 2010-07-01 Schultz Wilderich C Multiple venturi nozzle system for watercraft

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2140099A (en) * 1938-04-29 1938-12-13 Winfield H Wise Outboard motor propeller guard
US4013033A (en) * 1976-01-28 1977-03-22 Porter Stephen G Weed guard for trolling motors
US5902157A (en) * 1998-06-11 1999-05-11 Boris; Donald R. Rudder attachment for trolling motor
US20030114052A1 (en) * 2001-01-18 2003-06-19 Schultz William C. Thrust enhancing propeller guard assembly
US20060166571A1 (en) * 2005-01-24 2006-07-27 Norman George I Shroud for a hydro thrust device
US20100167605A1 (en) * 2005-07-05 2010-07-01 Schultz Wilderich C Multiple venturi nozzle system for watercraft
US20080220670A1 (en) * 2007-03-08 2008-09-11 Paul Simon Perkins Propeller shield apparatus for trolling motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114180018A (zh) * 2021-11-30 2022-03-15 赣州潜行精密制造有限公司 一种无毂式轮缘螺旋桨

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