[go: up one dir, main page]

WO1996005989A1 - Trailer vehicle security device - Google Patents

Trailer vehicle security device Download PDF

Info

Publication number
WO1996005989A1
WO1996005989A1 PCT/AU1994/000497 AU9400497W WO9605989A1 WO 1996005989 A1 WO1996005989 A1 WO 1996005989A1 AU 9400497 W AU9400497 W AU 9400497W WO 9605989 A1 WO9605989 A1 WO 9605989A1
Authority
WO
WIPO (PCT)
Prior art keywords
locking device
hitch
jaw
trailer
shaft
Prior art date
Application number
PCT/AU1994/000497
Other languages
French (fr)
Inventor
Richard Smith
Original Assignee
Richard Smith
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
Priority claimed from AU59001/94A external-priority patent/AU668806B2/en
Application filed by Richard Smith filed Critical Richard Smith
Priority to US08/793,361 priority Critical patent/US5873271A/en
Priority to PCT/AU1994/000497 priority patent/WO1996005989A1/en
Publication of WO1996005989A1 publication Critical patent/WO1996005989A1/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60DVEHICLE CONNECTIONS
    • B60D1/00Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/58Auxiliary devices
    • B60D1/60Covers, caps or guards, e.g. comprising anti-theft devices

Definitions

  • This invention relates to devices for securing trailers and more particularly to devices for attachment to the hitch portion of a trailer.
  • trailer locking devices have been proposed which either prevent unauthorised removal from a vehicle or attachment to a vehicle, ie they lock the trailer on the vehicle or off the vehicle.
  • existing devices are not able to lock the trailer on and off the vehicle.
  • some trailer locks are not particularly secure.
  • the present invention provides a trailer lock which may, in preferred embodiments, lock the trailer when connected and disconnected from a tow vehicle.
  • the invention is a locking device for a trailer hitch of the ball and socket type, the locking device comprising an upper jaw and a lower jaw; shaft means interconnecting the two jaws together for reciprocal movement relative to each other; and, locking means for securing the two jaws at a selected distance apart wherein, in use, the jaws are lockable about the socket portion of the hitch to prevent unauthorised removal of the trailer.
  • the locking device is lockable on the hitch when the trailer is both mounted on and dismounted from a tow bar on a tow vehicle.
  • the locking device further includes an auxiliary locking member movable between first and second operative positions, whereby, in the first operative position, the device may be locked on to a hitch when attached to a tow bar, and in the second operative position, when locked to an unattached trailer hitch, the auxiliary locking member extends into the socket of the hitch.
  • an auxiliary locking member movable between first and second operative positions, whereby, in the first operative position, the device may be locked on to a hitch when attached to a tow bar, and in the second operative position, when locked to an unattached trailer hitch, the auxiliary locking member extends into the socket of the hitch.
  • the auxiliary locking member in the second operative position is received in a recess or aperture in the lower jaw and extends toward the upper jaw.
  • the recess or aperture is sized to receive a tow ball shaft and/or nut when the auxiliary locking member is in the first operative position.
  • the invention provides a locking device for a trailer having first and second operative modes, in the first operative mode, the device being adapted to lock onto an unattached trailer hitch and prevent mounting of the hitch to a tow bar; and in the second operative mode the device being adapted to lock onto a trailer hitch/tow bar when the trailer hitch is mounted on the tow bar and prevent removal of the hitch from the tow bar.
  • the device in the first operative mode has an auxiliary member adapted to extend into the socket of the hitch.
  • Fig. 1 shows a perspective view of an embodiment of the invention.
  • Fig. 2 shows a partial cross-section of the embodiment of Fig. 1 when in a configuration used to lock a trailer mounted on a tow vehicle's tow bar.
  • Fig. 3 shows a partial cross-section of the embodiment of Fig. 1 when in a configuration used to lock a trailer not attached to a tow vehicle.
  • the locking device 10 comprises a lower jaw 11 and an upper jaw 12.
  • the lower jaw 11 has a generally planar upper surface 13. Extending upwardly from and substantially normally to the upper surface 13 there is provided a barbed shaft 14, preferably of a hardened steel.
  • the shaft 14 is received in a blind bore 16 in the lower jaw 11 and is secured thereto by any conventional means. This may be by way of a grub screw or lock pin 18, soldering, brazing or other known methods. Preferably, the shaft 14 is a press fit in bore 16 and is secured by a press fitted lock pin received in bore 17.
  • the upper jaw 12 is generally u-shaped with parallel planar upper and lower surfaces 20, 22 respectively.
  • a bore 24 passes through the jaw normal to the upper and lower surfaces 20, 22.
  • the free end of the shaft 14 is slidably received in this bore such that the two jaws, 11, 12 may be slid toward or away from each other.
  • a cylindrical cover member 26 Securely mounted on the upper surface 20 and coaxial with the bore 24 there is provided a cylindrical cover member 26.
  • the cover member 26 is closed at its free end 28 and is of a sufficient diameter and length to receive the portion of the shaft 14 which extends through the upper jaw 12.
  • the cover member 28 prevents ingress of dirt and other contaminants into the bore 24 but is mainly to prevent tampering with the locking mechanism. Accordingly, it is preferably a steel cylindrical member. However, if tamper resistance is not required, it may be a rigid plastics or flexible rubber membrane.
  • the upper jaw 12 is provided with a keyed locking
  • a mechanism comprises a keyed barrel rotatable between locked and unlocked positions. In the locked position a ball is urged toward the "scallops" 31 in the shaft 14 by means of a finger or cam mounted on the lock barrel, thereby preventing movement of the upper jaw 12 relative to the shaft and lower jaw 11.
  • the upper jaw is u-shaped and has a central aperture 34.
  • the aperture is shaped to receive the tow-ball receiving portion of the trailer hitch, best seen in Figs. 2 and 3.
  • the lower portion of the aperture 34 is generally half circular in cross-section, with a narrow opening 35 into the upper surface 20. The narrow opening is to accommodate the normal ball securing mechanisms of the hitch which extend from the hitch housing.
  • the lower jaw 11 is provided with an opening 36 in its upper surface 20 which preferably extends through the jaw.
  • the opening 36 is provided with a large diameter bore 38 extending downwards from the upper surface.
  • the bore 38 is of a sufficient depth and diameter to receive the tow ball nut 40.
  • the opening 36 may comprise the bore 38 alone, preferably it comprises the bore 38 and a smaller diameter bore 42 sized smaller than the nut 40 but larger than the tow ball shaft 44.
  • the shaft may extend through the jaw 11, as seen in Fig. 2. It will be
  • the lower jaw 11 is also provided with a "dummy ball" 46.
  • the dummy ball 46 is preferably a hollow steel casting but may be a solid machined item, if desired.
  • the ball 46 is pivotably attached to the jaw 11 by an arm 48 which is preferably integral with the ball 46.
  • the lower jaw 11 is provided with a slot 49 in which the free end of the arm 48 is journalled.
  • the arm 48 is mounted in the slot 49 such that in one position, as in Fig. 1, the ball 46 is to one side of the jaw 11 and is mainly below the plane of the upper surface 13.
  • the ball 46 may be pivoted 180 degrees, as in Fig. 3, such that it is engaged in bore 38 and mainly extends above the upper surface 13 toward the upper jaw 12.
  • the ball is provided with a free end portion 52 of an outer diameter slightly less than the inside diameter of bore 38, so that the free end is snugly received in the bore.
  • the remainder of the ball is of larger
  • the arm 48 is not essential and other ways of moving/securing the dummy ball 46 may be utilised.
  • the locking device has two operative modes. In the first mode the dummy ball is rotated to the side of the jaw 11, as in Fig. 1. In this first mode the device may lock a trailer to a tow bar as in Fig. 2. In the second mode the dummy ball 46 is positioned in and coaxial with the bore 38 and the device may lock an unattached trailer.
  • the trailer hitch 15 is attached to the tow vehicle's tow ball, the tow ball 54 being secured in the part spherical opening 53 of the hitch 15.
  • the device is unlocked and the two jaws 11, 12 are moved apart sufficiently that they may pass above and below the hitch and tow bar 55.
  • the jaws must be separated sufficiently to allow the lower jaw to clear the tow bar, tow ball shaft 44 and nut 40.
  • the lower jaw is positioned to receive the tow ball shaft 44 and nut 40 and moved upwards to bear on the lower surface of the tow bar 55.
  • the upper jaw 12 is moved towards the lower jaw until the hitch is received in the opening 34 between the two legs of the upper jaw.
  • the lock 30 is then locked, securing the two jaws in position. It will be appreciated that once the two jaws are secured in position, the hitch cannot be removed from the tow ball 46. Thus the trailer cannot be disconnected from the tow vehicle. It will also be appreciated that removal of the tow ball nut 40 will not allow removal either, since the lower jaw bears on the tow bar 55. Further, the device cannot be shifted sideways off the hitch, since the tow ball shaft 44 will prevent this, even if the nut 40 is removed.
  • the dummy ball 46 is positioned in the bore 38 and the lower jaw 11 and ball 46 positioned underneath the hitch.
  • the jaw is raised upwards so the dummy ball 46 enters the ball receiving cavity 53 of the hitch.
  • the upper jaw 12 is then moved downwards to again bear on the upper surfaces of the hitch 15.
  • the locking mechanism 30 is then locked to secure the two jaws in position. In this position the device cannot be moved sideways because of the dummy ball 46 in the hitch cavity 53. Thus the trailer cannot be mounted on a tow bar and so cannot be towed away.
  • the device is also provided with optional security measures to prevent tampering with the locking shaft 14.
  • the upper jaw has two downwardly extending tongues 60, 62, which serve to limit access to the bore in the upper jaw. If necessary the tongues may have cut-aways 64 to

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

A locking device (10) for a trailer and hitch of the ball and socket type, comprising an upper jaw (12) and a lower jaw (11) interconnected together by a shaft (14) for reciprocal movement relative to each other. A locking means (30) keeps the two jaws (11, 12) apart at fixed distances over a ribbed portion (31) of the shaft (14). In use, the two jaws (11, 12) are locked about the socket portion of the hitch to prevent unauthorised removal of the trailer. When the trailer is attached to a tow vehicle, the tow ball nut is received in an opening (36) in the lower jaw (11). When the trailer is unattached, a dummy ball (46) extends into the socket of the hitch. In both positions, the socket portion of the hitch is received in an aperture (34) in the upper jaw (12).

Description

TRAILER VEHICLE SECURITY DEVICE
This invention relates to devices for securing trailers and more particularly to devices for attachment to the hitch portion of a trailer.
Large trailers, such as those used for transporting boats, are expensive and thus liable to be stolen, particularly when unattached to a vehicle. However, even when attached to a vehicle, there is little to prevent unauthorised removal. Trailer locking devices have been proposed which either prevent unauthorised removal from a vehicle or attachment to a vehicle, ie they lock the trailer on the vehicle or off the vehicle. However, existing devices are not able to lock the trailer on and off the vehicle. Thus, it is necessary to have two separate locking devices or otherwise leave the trailer vulnerable to theft at some stage. Furthermore some trailer locks are not particularly secure.
In an attempt to provide an alternate lock to the prior art, the present invention provides a trailer lock which may, in preferred embodiments, lock the trailer when connected and disconnected from a tow vehicle.
Accordingly, in one broad form the invention is a locking device for a trailer hitch of the ball and socket type, the locking device comprising an upper jaw and a lower jaw; shaft means interconnecting the two jaws together for reciprocal movement relative to each other; and, locking means for securing the two jaws at a selected distance apart wherein, in use, the jaws are lockable about the socket portion of the hitch to prevent unauthorised removal of the trailer.
Preferably, the locking device is lockable on the hitch when the trailer is both mounted on and dismounted from a tow bar on a tow vehicle.
Preferably, the locking device further includes an auxiliary locking member movable between first and second operative positions, whereby, in the first operative position, the device may be locked on to a hitch when attached to a tow bar, and in the second operative position, when locked to an unattached trailer hitch, the auxiliary locking member extends into the socket of the hitch.
More preferably, in the second operative position the auxiliary locking member is received in a recess or aperture in the lower jaw and extends toward the upper jaw.
In a preferred form, the recess or aperture is sized to receive a tow ball shaft and/or nut when the auxiliary locking member is in the first operative position. In an alternate broad form, the invention provides a locking device for a trailer having first and second operative modes, in the first operative mode, the device being adapted to lock onto an unattached trailer hitch and prevent mounting of the hitch to a tow bar; and in the second operative mode the device being adapted to lock onto a trailer hitch/tow bar when the trailer hitch is mounted on the tow bar and prevent removal of the hitch from the tow bar.
Preferably, in the first operative mode the device has an auxiliary member adapted to extend into the socket of the hitch.
The invention shall be better understood from the
following description of a non-limiting embodiment and the drawings, in which.
Fig. 1 shows a perspective view of an embodiment of the invention.
Fig. 2 shows a partial cross-section of the embodiment of Fig. 1 when in a configuration used to lock a trailer mounted on a tow vehicle's tow bar.
Fig. 3 shows a partial cross-section of the embodiment of Fig. 1 when in a configuration used to lock a trailer not attached to a tow vehicle.
Referring to the drawings, the locking device 10 comprises a lower jaw 11 and an upper jaw 12. The lower jaw 11 has a generally planar upper surface 13. Extending upwardly from and substantially normally to the upper surface 13 there is provided a barbed shaft 14, preferably of a hardened steel.
The shaft 14 is received in a blind bore 16 in the lower jaw 11 and is secured thereto by any conventional means. This may be by way of a grub screw or lock pin 18, soldering, brazing or other known methods. Preferably, the shaft 14 is a press fit in bore 16 and is secured by a press fitted lock pin received in bore 17.
The upper jaw 12 is generally u-shaped with parallel planar upper and lower surfaces 20, 22 respectively. A bore 24 passes through the jaw normal to the upper and lower surfaces 20, 22. The free end of the shaft 14 is slidably received in this bore such that the two jaws, 11, 12 may be slid toward or away from each other.
Securely mounted on the upper surface 20 and coaxial with the bore 24 there is provided a cylindrical cover member 26. The cover member 26 is closed at its free end 28 and is of a sufficient diameter and length to receive the portion of the shaft 14 which extends through the upper jaw 12. The cover member 28 prevents ingress of dirt and other contaminants into the bore 24 but is mainly to prevent tampering with the locking mechanism. Accordingly, it is preferably a steel cylindrical member. However, if tamper resistance is not required, it may be a rigid plastics or flexible rubber membrane.
The upper jaw 12 is provided with a keyed locking
mechanism, generally indicated by 30. The locking
mechanism comprises a keyed barrel rotatable between locked and unlocked positions. In the locked position a ball is urged toward the "scallops" 31 in the shaft 14 by means of a finger or cam mounted on the lock barrel, thereby preventing movement of the upper jaw 12 relative to the shaft and lower jaw 11.
As mentioned above, the upper jaw is u-shaped and has a central aperture 34. The aperture is shaped to receive the tow-ball receiving portion of the trailer hitch, best seen in Figs. 2 and 3. Accordingly, the lower portion of the aperture 34 is generally half circular in cross-section, with a narrow opening 35 into the upper surface 20. The narrow opening is to accommodate the normal ball securing mechanisms of the hitch which extend from the hitch housing.
The lower jaw 11 is provided with an opening 36 in its upper surface 20 which preferably extends through the jaw. The opening 36 is provided with a large diameter bore 38 extending downwards from the upper surface. The bore 38 is of a sufficient depth and diameter to receive the tow ball nut 40. Although the opening 36 may comprise the bore 38 alone, preferably it comprises the bore 38 and a smaller diameter bore 42 sized smaller than the nut 40 but larger than the tow ball shaft 44. Thus, the shaft may extend through the jaw 11, as seen in Fig. 2. It will be
appreciated that if the lower jaw 11 is of sufficient thickness a through opening is not necessary.
The lower jaw 11 is also provided with a "dummy ball" 46. The dummy ball 46 is preferably a hollow steel casting but may be a solid machined item, if desired. The ball 46 is pivotably attached to the jaw 11 by an arm 48 which is preferably integral with the ball 46.
The lower jaw 11 is provided with a slot 49 in which the free end of the arm 48 is journalled. The arm 48 is mounted in the slot 49 such that in one position, as in Fig. 1, the ball 46 is to one side of the jaw 11 and is mainly below the plane of the upper surface 13.
The ball 46 may be pivoted 180 degrees, as in Fig. 3, such that it is engaged in bore 38 and mainly extends above the upper surface 13 toward the upper jaw 12. Preferably the ball is provided with a free end portion 52 of an outer diameter slightly less than the inside diameter of bore 38, so that the free end is snugly received in the bore. Preferably the remainder of the ball is of larger
diameter, with a land 54 being formed to bear on the upper surface 13 and prevent over rotation of the ball 46. It will be appreciated that the arm 48 is not essential and other ways of moving/securing the dummy ball 46 may be utilised.
The locking device has two operative modes. In the first mode the dummy ball is rotated to the side of the jaw 11, as in Fig. 1. In this first mode the device may lock a trailer to a tow bar as in Fig. 2. In the second mode the dummy ball 46 is positioned in and coaxial with the bore 38 and the device may lock an unattached trailer.
The operation in the first mode will be explained with reference to Fig. 2.
The trailer hitch 15 is attached to the tow vehicle's tow ball, the tow ball 54 being secured in the part spherical opening 53 of the hitch 15. The device is unlocked and the two jaws 11, 12 are moved apart sufficiently that they may pass above and below the hitch and tow bar 55. The jaws must be separated sufficiently to allow the lower jaw to clear the tow bar, tow ball shaft 44 and nut 40.
Usually the shaft 44 will extend downwardly the most.
The lower jaw is positioned to receive the tow ball shaft 44 and nut 40 and moved upwards to bear on the lower surface of the tow bar 55. Next, or simultaneously, the upper jaw 12 is moved towards the lower jaw until the hitch is received in the opening 34 between the two legs of the upper jaw. The lock 30 is then locked, securing the two jaws in position. It will be appreciated that once the two jaws are secured in position, the hitch cannot be removed from the tow ball 46. Thus the trailer cannot be disconnected from the tow vehicle. It will also be appreciated that removal of the tow ball nut 40 will not allow removal either, since the lower jaw bears on the tow bar 55. Further, the device cannot be shifted sideways off the hitch, since the tow ball shaft 44 will prevent this, even if the nut 40 is removed.
The operation in the second mode is best understood with reference to Fig. 3. The jaws of the device are again unlocked and separated to pass over the unattached hitch 15.
The dummy ball 46 is positioned in the bore 38 and the lower jaw 11 and ball 46 positioned underneath the hitch. The jaw is raised upwards so the dummy ball 46 enters the ball receiving cavity 53 of the hitch. The upper jaw 12 is then moved downwards to again bear on the upper surfaces of the hitch 15. The locking mechanism 30 is then locked to secure the two jaws in position. In this position the device cannot be moved sideways because of the dummy ball 46 in the hitch cavity 53. Thus the trailer cannot be mounted on a tow bar and so cannot be towed away.
It will be appreciated that use of a dummy tow ball having a shape similar to that of a standard tow ball will reduce play when locked on an unattached trailer. However it will also be appreciated that the "ball" may merely be a protrusion extending into the hitch cavity to prevent substantial sideways movement.
In both modes removal is merely the reverse of the application steps.
The device is also provided with optional security measures to prevent tampering with the locking shaft 14. As seen in Fig. 1, on either side of the shaft 14, the upper jaw has two downwardly extending tongues 60, 62, which serve to limit access to the bore in the upper jaw. If necessary the tongues may have cut-aways 64 to
accommodate strengthening webs frequently found on tow bars.
It will be appreciated by those skilled in the art that many modifications and variations may be made to the embodiments described herein without departing from the spirit or scope of the invention.

Claims

THE CLAIMS :
1. A locking device for a trailer hitch of the ball and socket type, the locking device comprising
- an upper jaw and a lower jaw;
- shaft means interconnecting the two jaws together for reciprocal movement relative to each other; and,
- locking means for securing the two jaws at a selected distance apart;
wherein, in use, the jaws are lockable about the socket portion of the hitch to prevent unauthorised removal of the trailer.
2. The locking device of claim 1 wherein the locking device is lockable on the hitch when the trailer is both mounted on and dismounted from a tow bar on a tow vehicle.
3. The locking device of claim 1 or claim 2 further including an auxiliary locking member movable between first and second operative positions, whereby, in the first operative position the device may be locked on to a hitch when attached to a tow bar, and in the second operative position, when locked to an unattached trailer hitch, the auxiliary locking member extends into the socket of the hitch.
4. The locking device of claim 3 wherein in the second operative position the auxiliary locking member is
received in a recess or aperture in the lower jaw and extends toward the upper jaw.
5. The locking device of claim 4 wherein the recess or aperture is sized to receive a tow ball shaft and/or nut when the auxiliary locking member is in the first
operative position.
6. The locking device of any one of claims 3 to 5 wherein the auxiliary locking device is pivotably mounted on the lower jaw.
7. The locking device of any one of claims 1 to 7 wherein the upper jaw has a recess or aperture therein to receive a portion of the hitch.
8. The locking device of any one of claims 1 to 7 wherein the shaft means comprises a single shaft securely mounted to one jaw and received in a through bore in the other jaw.
9. The locking device of claim 8 wherein the shaft comprises a ribbed or barbed shaft and the locking means is mounted on or in the other jaw.
10. A locking device for a trailer hitch, substantially as herein described with reference to the drawings.
AMENDED CLAIMS
[received by the International Bureau on 20 December 1995 (20.12.95);
original claims 1 and 2 replaced by new claim 1; original claims 3-10 renumbered as claims 2-9 (3 pages)]
1. A locking device for a trailer hitch of the ball and socket type, the locking device comprising - an upper jaw and a lower jaw; - shaft means interconnecting the two jaws together for reciprocal movement relative to each other; and,
- locking means for securing the two jaws at a selected distance apart;
wherein, in use, the jaws are lockable about the socket portion of the hitch when the trailer is both mounted on and dismounted from a tow bar on a tow vehicle, so as to prevent unauthorised removal of the trailer.
2. The locking device of claim 1 further including an auxiliary locking member movable between first and second operative positions, whereby, in the first operative position the device may be locked on to a hitch when attached to a tow bar, and in the second operative
position, when locked to an unattached trailer hitch, the auxiliary locking member extends into the socket of the hitch.
3. The locking device of claim 4 wherein in the second operative position the auxiliary locking member is
received in a recess or aperture in the lower jaw and extends toward the upper jaw.
4. The locking device of claim 3 wherein the recess or aperture is sized to receive a tow ball shaft and/or nut when the auxiliary locking member is in the first
operative position.
5. The locking device of any one of claims 2 to 4 wherein the auxiliary locking device is pivotably mounted on the lower jaw.
6. The locking device of any one of claims 1 to 6 wherein the upper jaw has a recess or aperture therein to receive a portion of the hitch.
7. The locking device of any one of claims 1 to 6 wherein the shaft means comprises a single shaft securely mounted to one jaw and received in a through bore in the other jaw.
8. The locking device of claim 7 wherein the shaft comprises a ribbed or barbed shaft and the locking means is mounted on or in the other jaw.
9. A locking device for a trailer hitch, substantially as herein described with reference to the drawings.
PCT/AU1994/000497 1993-08-02 1994-08-24 Trailer vehicle security device WO1996005989A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US08/793,361 US5873271A (en) 1994-08-24 1994-08-24 Trailer vehicle security device
PCT/AU1994/000497 WO1996005989A1 (en) 1993-08-02 1994-08-24 Trailer vehicle security device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPM026693 1993-08-02
AU59001/94A AU668806B2 (en) 1993-08-02 1994-03-23 Trailer vehicle security device
PCT/AU1994/000497 WO1996005989A1 (en) 1993-08-02 1994-08-24 Trailer vehicle security device

Publications (1)

Publication Number Publication Date
WO1996005989A1 true WO1996005989A1 (en) 1996-02-29

Family

ID=27155215

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1994/000497 WO1996005989A1 (en) 1993-08-02 1994-08-24 Trailer vehicle security device

Country Status (1)

Country Link
WO (1) WO1996005989A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1101635A1 (en) 1999-11-17 2001-05-23 Remorques Hubiere S.A Double-action antitheft apparatus for vehicles suitable to be connected and trailers equipped with such a device
RU2170799C1 (en) * 2000-06-14 2001-07-20 Открытое акционерное общество "АВТОВАЗ" Lock
EP1211105A3 (en) * 2000-11-29 2002-11-27 Lex Elzo Westera Theft protection means for trailer coupling

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3479057A (en) * 1967-05-04 1969-11-18 Bangor Punta Operations Inc Trailer hitch safety device
GB1350086A (en) * 1971-03-24 1974-04-18 Hall R A Anti-theft device
GB1392833A (en) * 1972-09-07 1975-04-30 Carnall R Carnall Co R D Anti-theft devices for trailer vehicles
US4032171A (en) * 1976-05-17 1977-06-28 Allen Cloy L Trailer hitch locking device
US4208065A (en) * 1977-09-19 1980-06-17 Walter C. Avrea Coupling guard
US4571964A (en) * 1984-09-25 1986-02-25 Bratzler William R Trailer hitch lock
US4577884A (en) * 1984-04-30 1986-03-25 Harris Joe L Trailer hitch
FR2570991A1 (en) * 1984-10-01 1986-04-04 Afflard Marcel Attachment device for towing any road vehicle
US4730841A (en) * 1987-06-22 1988-03-15 Ponder Joe L Trailer hitch locking device
FR2611622A1 (en) * 1987-02-23 1988-09-09 Koehl Jean Marie Universal anti-theft device for ball-type attachments
US4836570A (en) * 1988-04-07 1989-06-06 Lopez Alfred G Trailer hitch
US5087064A (en) * 1990-07-27 1992-02-11 Guhlin Kjall G Anti-theft and safety device for a ball and socket trailer hitch

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3479057A (en) * 1967-05-04 1969-11-18 Bangor Punta Operations Inc Trailer hitch safety device
GB1350086A (en) * 1971-03-24 1974-04-18 Hall R A Anti-theft device
GB1392833A (en) * 1972-09-07 1975-04-30 Carnall R Carnall Co R D Anti-theft devices for trailer vehicles
US4032171A (en) * 1976-05-17 1977-06-28 Allen Cloy L Trailer hitch locking device
US4208065A (en) * 1977-09-19 1980-06-17 Walter C. Avrea Coupling guard
US4577884A (en) * 1984-04-30 1986-03-25 Harris Joe L Trailer hitch
US4571964A (en) * 1984-09-25 1986-02-25 Bratzler William R Trailer hitch lock
FR2570991A1 (en) * 1984-10-01 1986-04-04 Afflard Marcel Attachment device for towing any road vehicle
FR2611622A1 (en) * 1987-02-23 1988-09-09 Koehl Jean Marie Universal anti-theft device for ball-type attachments
US4730841A (en) * 1987-06-22 1988-03-15 Ponder Joe L Trailer hitch locking device
US4836570A (en) * 1988-04-07 1989-06-06 Lopez Alfred G Trailer hitch
US5087064A (en) * 1990-07-27 1992-02-11 Guhlin Kjall G Anti-theft and safety device for a ball and socket trailer hitch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1101635A1 (en) 1999-11-17 2001-05-23 Remorques Hubiere S.A Double-action antitheft apparatus for vehicles suitable to be connected and trailers equipped with such a device
RU2170799C1 (en) * 2000-06-14 2001-07-20 Открытое акционерное общество "АВТОВАЗ" Lock
EP1211105A3 (en) * 2000-11-29 2002-11-27 Lex Elzo Westera Theft protection means for trailer coupling

Similar Documents

Publication Publication Date Title
US5873271A (en) Trailer vehicle security device
US6722686B2 (en) Coupler locking device and method
US5087064A (en) Anti-theft and safety device for a ball and socket trailer hitch
US5794961A (en) Anti-theft device for trailer
US4730841A (en) Trailer hitch locking device
US6672115B2 (en) Locking device with convertible shank
US6244614B1 (en) Trailer hitch lock
US6698256B2 (en) Ball and ring hitch lock
US8020885B2 (en) Coupler lockout device
CA2081924C (en) Hold-down locking bar for snowmobile on trailer
US20040134242A1 (en) Locking device for trailer hitches and method therefor
US6591641B1 (en) Locking device for lockrod-type cargo-container closures
US20040075240A1 (en) Hitch locking mechanism
US6419258B1 (en) Locking mechanism for trailer hitch security lock
US6412315B1 (en) Box hitch receiver lock
CA2219579A1 (en) Positive lock gooseneck hitch
US4841756A (en) Locking device for a shaft end, such as a trailer kingpin
US6203050B1 (en) Ball hitch with lock assembly
US5181405A (en) Gooseneck trailer hitch lock
US6315315B1 (en) Gooseneck trailer lock
GB2210343A (en) Trailer ball hitch coupling security device
US4691935A (en) Anti-theft trailer assembly and trailer hitch lock
WO1996005989A1 (en) Trailer vehicle security device
AU668806B2 (en) Trailer vehicle security device
US7294032B1 (en) Devices and methods for securing water sport boards

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA JP NZ US

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2198218

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 08793361

Country of ref document: US