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:
Oct. 08, 1991
Filed:
Feb. 13, 1991
Craig A Osterday, Dayton, OH (US);
Donald M Flory, Arcanum, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A power booster assembly, has a dual-durometer reaction disc instead of the disc having a single durometer value throughout. The disc has an outer annular portion of a higher durometer value than the durometer value of the disc inner center portion. The higher durometer value is preferably on the order of 80 durometer and the lower durometer value is preferably on the order of 45 durometer. The outer annular portion transmit part of the reaction force to the booster power wall, and the inner center portion transmit the remainder of the reaction force to the reaction piston and thence to the booster input member. The disc may be made as a unitary part or may be made in two parts with the inner center portion being later inserted into and mechanically interlocked with the outer center portion.