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:
Sep. 01, 1992
Filed:
Aug. 28, 1991
Richard A Zander, Niles, MI (US);
Allied-Signal Inc., Morristown, NJ (US);
Abstract
The master cylinder piston retaining member (90, 190) comprises either a flexible, ribbed bellows type member (190) or a nonflexible member (90) attached at one end of the master cylinder (10) in order to retain the primary piston (30) within the master cylinder (10). A cartridge master cylinder (10) having an end member (18) attached at one end (16) and retaining a sleeve member (20) within the bore (14), includes a pair of pistons (30, 40) with one piston (30) biased by a top hat construction (50) comprising one member (52) telescopically and slidable received within the other member (54) and having a spring (55) extending therebetween so that the maximum expansion of the spring (55) is limited. The primary piston (30) of the master cylinder (10) is positioned within an opening (26) of the end member (18). The piston retaining member (90, 190) is seated at one end within the end member (18) in order to be attached therewith and at the other end includes a radially inwardly extending flange (91, 191) which engages an axial end (31) of the primary piston (30) in order to limit by a predetermined amount the position of the primary piston (30) relative to the master cylinder (10). The piston retaining member (b 90, 190) enables a previously used top hat construction for the secondary piston (40) to be replaced with merely a spring (56).