Locks – Portable – Fetters
Patent
1995-08-11
1998-08-18
Gall, Lloyd A.
Locks
Portable
Fetters
70 56, 70164, 70181, G05G 500
Patent
active
057944628
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a device for disabling apparatus, particularly though not exclusively for disabling a vehicle or its trailer.
BACKGROUND OF THE INVENTION
Theft of contractors plant is a severe problem.
The object of the invention is to provide a means of disabling a vehicle, trailer or the like to render its movement difficult and hence deter its theft.
THE INVENTION
According to the invention there is provided a disabling device for disabling apparatus to which the device is locked, the device comprising: limbs; the apertures and to extend through the limbs whilst engaged in the apertures; and removed from the apparatus, which is thereby disabled.
Normally the lock is a padlock and the pin is adapted for locking to the U member with the padlock positioned between the limbs of the U member.
Preferably, a portion of the pin passes through an aperture in one of the limbs and has a transverse bore for receiving the link or pin of the padlock, the transverse bore being between the limbs of the U member when the pin is engaged.
Conveniently, the stem of the pin has the transverse bore for receiving the link or pin of the padlock.
Preferably, the head of the pin and the limb, against which it lies when the stem is engaged in the apertures, are adapted to prevent rotation of the engaged pin.
In simple embodiments of the disabling device, the anti-rotation adaption is in the form of a flat on the head and a bar or flange fixed on the limb, the flat being spaced from the centre of the stem of the pin such that it fits closely to the bar or flange when the pin is inserted in the apertures.
As described in our International Patent Application No. PCT/GB93/00416 we have described disabling of a tracked vehicle by passing a pin through an aperture in a track of the vehicle and locking the pin to the chassis of the vehicle. For an elastomeric material track we proposed to cut or pre-fabricate the aperture in the track.
We now propose to utilise one of the drive sprocket apertures already provided in the track in combination with one embodiment of the disabling device for disabling the vehicle equipped with the track.
In this embodiment of the disabling device: chassis part of the vehicle and adapted both to receive one limb of the U member in its aperture with the apertures in the limbs aligned with one of the drive sprocket apertures and the bracket between the aperture in the received limb and the base of the U member securing the U member to the chassis part; and of the U member with its stem passing through the track aperture, whereby the vehicle is disabled from movement of its track.
In this embodiment, the anti-rotation adaption can be in the form of a spigot fixed to the head, extending in the same direction as the stem and spaced from it, and a second aperture in the limb against which the head lies when the stem is engaged in the apertures, the spigot engaging in the second aperture to prevent rotation of the engaged pin.
Preferably, the spigot has the transverse bore for receiving the link or pin of the padlock.
In another embodiment of the disabling device, it is adapted to disable a telescopic actuator; its cylinder and an end fitting of the rod; and the rod, whereby the actuator cannot be stroked with the channel member fitted due to interposition of the channel member between the cylinder and the end fitting.
Where the telescopic actuator is for instance a steering ram of a vehicle, the vehicle is disabled by disablement of the steering ram.
Preferably, the channel member has end flanges for abutting the cylinder and the end fitting of the actuator without damaging them, should attempt be made to stroke the actuator without removal of the channel member.
The channel member may be a double overlapping channel, comprised of two channel elements, each having a plurality of apertures in each limb, the plurality of apertures being arrayed along the length of the channel elements, whereby the separation of the ends of the channel member can be adjusted to suit diff
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patent: 4730468 (1988-03-01), Becker
patent: 4765164 (1988-08-01), Prince, Jr.
patent: 4836570 (1989-06-01), Lopez et al.
patent: 5372018 (1994-12-01), Smith
Silvester David Graham
Steele Duncan Andrew
Gall Lloyd A.
Trailer Lock Development Limited
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