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:
Jan. 26, 1982
Filed:
Jan. 22, 1980
Raymond J Allori, Chicago, IL (US);
International Harvester Company, Chicago, IL (US);
Abstract
A self-locking step assembly is attached to a vehicle by rigidly connecting the outer cylinder of the assembly to the vehicle frame. The outer cylinder is secured with the centerline of its concentric inner and outer walls being substantially vertical. The inner cylinder of the assembly is slidably and rotatably positioned within the inside wall of the outer cylinder. The inner cylinder has a step secured to its bottom section, with the step being substantially perpendicular to the inner cylinder. The assembly also utilizes a locking pin that is rigidly secured to one of the inner or outer cylinders, and a cam slot that is in the other of the inner and outer cylinders. The pin engages the cam slot which has first and second portions connected by a third portion. When the pin is in the first portion of the cam slot, the step is held in its used position by gravitational forces. When the pin is in the second position of the cam slot, the pin is held in its stored position by the same gravitational forces. Finally, when the pin is in the third portion of the cam slot, the operator is moving the step between its stored and used positions.