WO1998009832A1 - Locking means for trailer coupling - Google Patents
Locking means for trailer coupling Download PDFInfo
- Publication number
- WO1998009832A1 WO1998009832A1 PCT/SE1996/001098 SE9601098W WO9809832A1 WO 1998009832 A1 WO1998009832 A1 WO 1998009832A1 SE 9601098 W SE9601098 W SE 9601098W WO 9809832 A1 WO9809832 A1 WO 9809832A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shackle
- handle
- locking means
- coupling
- trailer
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/58—Auxiliary devices
- B60D1/60—Covers, caps or guards, e.g. comprising anti-theft devices
Abstract
The present invention concerns locking means for trailer couplings of the kind which comprises a handle for releasing of the coupling from the vehicle. The locking means according to the invention comprises a first shackle (1) which extends itself over the handle (6) and so far down that the lower ends of the shanks of the shackle are below the towbar. A crossing bar (2), which when the locking means is connected to a tow hook is positioned between the towbar and the handle, extends itself across the shackle between the shanks of the shackle at about its middle. Protruding from the first shackle, and adjacent to the crossbar (2), there is a second shackle (3). Connecting of the locking means to a trailer coupling is made from behind, the second shackle (3) is passed over the handle in such a way that the bar (2) is moved in underneath the handle. Thereafter the shackle (3) is brought down in front of the handle and the locking pin (4) is brought in place and locked.
Description
Locking means for trailer coupling
The present invention concerns a locking means for automobile trailer couplings of the kind which comprises a handle for releasing the coupling from the vehicle
Couplings of this kind are meant to connect a trailer to a tow-hook at a vehicle and is primarily used for small trailers The coupling means comprises a handle for connecting and releasing of the coupling at the tow hook and is mostly so designed that when the trailer is to be released from the vehicle the handle must be raised upwards and bent forwards When the coupling is connected to a vehicle the grip part of the handle is in a position which is parallel to the drawbar of the trailer
Trailers which have this kind of couplings are exposed to theft as the coupling is simpie to operate independent of if the trailer is connected to a vehicle or temporarily parked It is thus desirable that the coupling means can be locked in order to prevent unauthorised use of the trailer
Both in use and when parked trailer couplings of this kind are exposed to the influence of rain, snow, splashing dirt and other things, which may cause damages and malfunction of various kinds It is thus also desirable that the coupling as much as possible is protected from such external influences
Several locking means of this kind are known, or example from GB-1366079, GB- 2055140 and GB-2218391 A common feature of these known devices is that a bar or pin is positioned between the handle and that part of the coupling which is connected to the drawbar Another common feature is that the devices which are designed as housings are such that they can be used only when the trailer is released from the vehicle
The present invention is for a locking means which makes it possible to lock the coupling both when the trailer is parked alone and when it is connected to a vehicle The locking means of the invention may also include a protective housing, which protects the coupling both when parked and when in use
The invention will below be described more in detail with reference to the enclosed figures
Figure 1 shows a locking means according to the invention, mounted onto a trailer coupling which is locked by that means
2 Figure shows, inclined from below, a locking means according to the invention, which also includes a housing
Figure 3 is a cross-section of the means of figure 2 along A-A
Figure 4 is a perspective view of a locking means according to the invention without a housing
The locking means according to the invention comprises a first shackle 1 which extends itself over the handle 6 and so far down the lower ends of the shackle are below the drawbar Across the shackle between its shanks and approximately at the middle thereof a crossbar 2 extends itself, which when the locking means is mounted onto a coupling is between the drawbar and the handle Protruding from the first shackle, approximately at the crossbar 2, there is a second shackle 3 When the locking means is mounted the second shackle 3 encloses the front part of the handle 6
In the embodiment of the invention which is shown in the figure the first shackle at the lower end of each of its shanks has a hole 8, 9, through which a locking pin 4 may be inserted The locking pin may at its one end have a head 5 and at its other end a hole for inserting a shackle lock or other locking means The mounting of the locking means onto a trailer coupling is made from behind whereby the second shackle 3 is moved over the handle in such a way that the bar 2 passes in underneath the handle Thereupon the shackle 3 is brought down in front of the handle, after which the locking pin 4 is inserted and locked
The embodiment of the invention which is shown in the figures 2 and 3 also includes a housing 10 This is made from a suitable material, for example reinforced polymer or stainless steel The shape of the housing may vary somewhat, due to for example the material which is used for housing and different variations of for example the locking device It is a common feature of all the embodiments that the housing is open at its rear end and downwards and covered in all other directions Also with a housing of this kind the locking means may be mounted both to a parked trailer or to a trailer which is connected to a vehicle
Several variations and embodiments of the invention are possible within the frame of the inventive idea In order to further make theft more difficult the locking device may be made from hardened steel The enclosing housing may be moulded from polymer and the shackles of the locking means may be embedded in the housing The locking device for the pin 4 may be varied in many ways as also the mounting of the pin These and other possible embodiments of the invention are adapted the intended use
Claims
CLAIMS.
1 Locking means for a trailer coupling of the kind which comprises a handle for releasing of the coupling from the tow hook of a vehicle characterized by a first shackle (1 ) which extends itself over the handle, a bar (2) between the shanks of the shackle, which bar (2) extends itself underneath the handle, a second shackle (3) which protrudes from the first shackle and horizontally surrounds the handle and locking bar (4) which extends itself between the lower ends of the shanks of the first shackle (1 )
2 Locking means according to claim 1 characterized by a housing which surrounds and encloses the locking means and which is rearwards and downwards open
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9500811A SE504026C2 (en) | 1995-03-06 | 1995-03-06 | Trailer coupling locking device |
PCT/SE1996/001098 WO1998009832A1 (en) | 1995-03-06 | 1996-09-04 | Locking means for trailer coupling |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9500811A SE504026C2 (en) | 1995-03-06 | 1995-03-06 | Trailer coupling locking device |
PCT/SE1996/001098 WO1998009832A1 (en) | 1995-03-06 | 1996-09-04 | Locking means for trailer coupling |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998009832A1 true WO1998009832A1 (en) | 1998-03-12 |
Family
ID=26662246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1996/001098 WO1998009832A1 (en) | 1995-03-06 | 1996-09-04 | Locking means for trailer coupling |
Country Status (2)
Country | Link |
---|---|
SE (1) | SE504026C2 (en) |
WO (1) | WO1998009832A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19839933A1 (en) * | 1998-09-02 | 2000-03-09 | Frank Heinrichs | Anti-theft protection device for car trailer couplings has pivoted locking bolt on coupling head, with lock to secure pivot lever on coupling head |
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 |
US9707812B2 (en) | 2014-10-29 | 2017-07-18 | Paul W. Budge | Trailer coupler lock |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3391555A (en) * | 1967-12-20 | 1968-07-09 | Anthony Mamo | Locking device for a trailer hitch |
GB2055140A (en) * | 1979-06-29 | 1981-02-25 | Granberg O T | A lockable protective cap for the towing mechanisms on trailers |
GB2218678A (en) * | 1988-05-10 | 1989-11-22 | Alan Place | Security device for theft prevention of a caravan or towable trailer when attached to the towing mechanism of a vehicle |
-
1995
- 1995-03-06 SE SE9500811A patent/SE504026C2/en not_active IP Right Cessation
-
1996
- 1996-09-04 WO PCT/SE1996/001098 patent/WO1998009832A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3391555A (en) * | 1967-12-20 | 1968-07-09 | Anthony Mamo | Locking device for a trailer hitch |
GB2055140A (en) * | 1979-06-29 | 1981-02-25 | Granberg O T | A lockable protective cap for the towing mechanisms on trailers |
GB2218678A (en) * | 1988-05-10 | 1989-11-22 | Alan Place | Security device for theft prevention of a caravan or towable trailer when attached to the towing mechanism of a vehicle |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19839933A1 (en) * | 1998-09-02 | 2000-03-09 | Frank Heinrichs | Anti-theft protection device for car trailer couplings has pivoted locking bolt on coupling head, with lock to secure pivot lever on coupling head |
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 |
US9707812B2 (en) | 2014-10-29 | 2017-07-18 | Paul W. Budge | Trailer coupler lock |
Also Published As
Publication number | Publication date |
---|---|
SE9500811D0 (en) | 1995-03-06 |
SE504026C2 (en) | 1996-10-21 |
SE9500811L (en) | 1996-09-07 |
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121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
122 | Ep: pct application non-entry in european phase |