The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 15, 1981
Filed:
Dec. 05, 1979
Applicant:
Inventor:
Michael L Chan, Sioux City, IA (US);
Assignee:
Wilson Trailer Company, Sioux City, IA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60P / ;
U.S. Cl.
CPC ...
414482 ; 293117 ; 293118 ; 414537 ;
Abstract
A hydraulically operated tailgate associated with a low bed, semi-trailer vehicle has a pivoted extension that is displaceable between an extended position coplanar with the ramp surface of the tailgate and a bumper position transverse to and underlying the ramp surface. A hydraulic actuating mechanism displacing the extension to the bumper position, simultaneously locks the tailgate mechanically to the frame of the semi-trailer vehicle.