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:
Aug. 22, 1995
Filed:
Sep. 14, 1993
W Eddie Raymer, Louisville, KY (US);
Lincoln Industries, Corp., Louisville, KY (US);
Abstract
A deployable and retractable ramp assembly is mounted on a flatbed railroad car to allow railroad equipment to be moved to and from tracks. The ramp assembly comprises four ramp sections pivotally connected to each other and in a retracted position in a Z-folded configuration. Each ramp section comprises a pair of rectangular tubes or railroad rails spaced by cross-braces a distance equal to the spacing of wheels of a railroad car on the same axle. Two masts are pivotally connected to the railroad car and can be locked in a substantially upright position, with first and second sheaves on the top end of each mast engaging a cable connected to a winch. A third winch connected by a third cable to the ramp sections applies a restraining force to preclude the ramp sections from moving too quickly under the force of gravity once moved past center during deployment.