Security device for a chassis or frame

Details Security device for a chassis or frame Security device for a chassis or frame

1994-09-29

1999-05-04

Meyers, Steven N.

Locks

Special application

For automotive vehicles

70237, 70235, 70226, 70 62, E05B 6512

Patent

active

058991018

DESCRIPTION:

BRIEF SUMMARY
The present invention relates to a security device for a chassis or frame, particularly for securing a chassis or frame to the ground.
Whilst the security device can be used in any circumstances where it is required to secure a vehicle, machine or the like, the invention is particularly concerned with the security of caravans or other wheeled vehicles which are to be stood in one place for some considerable time. In this respect, the theft of caravans, power boats, horse trailers, and construction plant and equipment has become increasingly common.
It is an object of the invention to provide a security device for a chassis or frame which is simple to install, but gives a high degree of security.
According to the present invention there is provided a releasable security device for securing a chassis or frame to the ground, said security device comprising a support member for engagement in the ground, at least one securing member for engagement with said chassis or frame, and locking means for releasably locking said securing member in engagement with said chassis or frame, wherein said support member and said securing member are rigidly connected whereby said chassis or frame can be secured to the ground.
It is particularly advantageous to secure the chassis or frame of a wheeled vehicle, such as a caravan or a boat trailer, to the ground, rather than securing or immobilising an individual part of the vehicle to be protected. In this respect, it will be appreciated that the chassis or frame is inherently strong and not easily movable. Securing the chassis or frame to the ground enables the provision of a particularly strong and secure device in a relatively simple manner.
The support member may, if required, be permanently fixed within the ground. For example, the support member may be an upstanding metal tube or rod, embedded in concrete or another foundation in the ground. The securing member may, similarly, be permanently fixed to the support member, or may be arranged to be connected thereto. For example, the upstanding end of the support member may be provided with a screw thread for the connection thereto of a correspondingly screw threaded securing member.
Presently, it is preferred that the support member is arranged to be removably engaged in the ground. In this respect, the rigid connection between the support member and said securing member, and the locking means for engaging the securing member on the chassis or frame, are arranged such that, in the secured position of the security device, the securing member opposes any withdrawal motion of the support member.
Thus, the support member may be a spike, of metal or other material, arranged to be hammered or otherwise pushed into the ground to at least a predetermined depth. At its upstanding end, the support member is rigidly connected to a substantially horizontally extending securing member, and said securing member is fixed to the chassis at a point substantially in alignment with the extent of the securing member. It will be appreciated that, in this position, withdrawal of the spike from the ground is only possible by lifting the chassis, to which the securing member is attached.
Although an arrangement with the support member formed as a simple spike is reasonably secure, particularly where the chassis or frame supports a heavy vehicle such as a caravan, the device can be made even more secure, and easier to use, by requiring the support member to be rotated during its insertion into, and subsequent withdrawal from, the ground.
In an embodiment, a support member comprises an elongate member having a pointed end and having one or more auger flights provided on its periphery. The elongate member may be solid or hollow.
It will be appreciated that the auger flights require the support member to be screwed or rotated to be advanced into the ground, and that withdrawal of the support member similarly requires an opposing rotation.
In an alternative embodiment, a receiving means for fixing in the ground is provided for said support member. For exa

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