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:
Apr. 18, 1989
Filed:
Nov. 05, 1987
Ralph Coupland, Lincoln, GB;
Michael P Keegan, Lincoln, GB;
Clayton Dewandre Co. Ltd., Lincoln, GB;
Abstract
A booster device for reducing the pedal force required to release the clutch on automotive vehicles. It is capable of either replacing the conventional clutch master cylinder (FIG. 4) or acting as an additional slave and master cylinder (FIGS. 1 to 3). An overcenter mechanism acts on the piston 4 intermediate its end to assist movement in opposite directions beyond a central point. To avoid unbalanced side loads, the overcenter mechanism includes two radially opposed spring (8) biased arms (5) the inner ends of which bear in cup-shaped recesses (6A) on opposite sides of a plug (6) sliding in a transverse bore through the piston (4).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile