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:
May. 24, 1988
Filed:
Feb. 03, 1987
Robert F Gaiser, Stevensville, MI (US);
Allied Corporation, Morristown, NJ (US);
Abstract
The master cylinder (10) comprises a housing (12) having a longitudinal bore (14), a housing end (16) enclosed by a bearing member (18) which retains a sleeve member (20) within the bore (14), a reservoir (70) mounted on the housing (12) and a pair of pistons (30, 40) received slidably within the bore (14), one piston (30) extending through an end (24) of the sleeve member (20). The one piston has an end (32) which provides seating for a fast fill valving mechanism (110). The fast fill valving mechanism (110) comprises a piston support guide (120) supporting a fast fill seal (150) and seal retainer (160) between the support guide (120) and the surface (23) of the sleeve member (20). The seal retainer (160) engages one end (142) of a spring (140), the other spring end (143) located at the end (32) of the piston. Displacement of the one piston (30) within the bore (14) creates an increasing pressure which will, at a predetermined higher pressure, cause the spring (140) to collapse or bend and permit axial displacement of the seal (150) and seal retainer (160) away from sealing engagement with a portion (123) of the piston support guide (120), and thereby permit fast fill fluid pressure within the primary chamber (88) to communicate with an auxiliary chamber (180).