Land vehicles – Wheeled – Attachment
Reexamination Certificate
2000-02-22
2001-12-18
Johnson, Brian L. (Department: 3618)
Land vehicles
Wheeled
Attachment
C280S766100, C254S424000
Reexamination Certificate
active
06331016
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to fifth wheel trailers, and more particularly to a stabilizer system to stabilize and prevent rocking and swaying of such trailers.
BACKGROUND OF THE INVENTION
Trailers, such as fifth wheel trailers, are subject to movement when a person enters the trailer, and the back end will rock and sway with the weight of a person. Stabilizers have been designed to support each side of the back end of trailers. While supporting the back end of the trailer, the supports do not necessarily prevent swaying, or side to side movement of the trailer when a person enters and walks through the trailer.
U.S. Pat. No. 5,205,586, shows a stabilizer assembly that is mounted under the bottom of the rear of the trailer. A single member is movable downward on each side of the trailer, independent of the other member. While each support does allow its respective supported side from moving downward, it is possible that there can be side-to-side or lateral movement of the trailer.
Another stabilizer for a fifth wheel trailer is illustrated in U.S. Pat. No. 5,575,492. The two supports, one on each side of the front end of the trailer, are independent of each other, but each support has an angled member that does provide some support against transverse movement.
U.S. Pat. No. 5,755,430 discloses leveling legs that extend downward from the front of the trailer to support the trailer on non-level surfaces.
Other devices are used to support the front of the trailer at the king pin, or pin that is attached to the vehicle towing the trailer. U.S. Pat. Nos. 4,596,371 and 5,197,311, disclose supports having two legs that are attached to the pin used in towing the trailer. These support help prevent rocking of the trailer relative to the axis of the of the trailer wheels.
SUMMARY OF THE INVENTION
The invention is a stabilization system for a fifth wheel trailer that prevents rocking and swaying of the trailer when parked. The rear end of the trailer is supported by a pair of adjustable supports that have a top railing joining them. The rail is moveably mounted on the two supports and is secured to the under side of the trailer. Each of the supports is independently adjustable to lower it to the ground. A pair of cross-braces connect the top of one adjustable support to the base of the other support to prevent swaying of the trailer when parked. A tripod type support is placed under the front end of the trailer to support the front end and to eliminate swaying at the front end of the trailer.
The technical advance represented by the invention as well as the objects thereof will become apparent from the following description of a preferred embodiment of the invention when considered in conjunction with the accompanying drawings, and the novel features set forth in the appended claims.
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Hawk Richard
Wallace Johnny M.
Johnson Brian L.
Sliteris Joselynn Y
Solid As A Look RV Stabilizer System, Inc
Vandigriff John E.
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