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:
Feb. 27, 2001
Filed:
Jan. 08, 1999
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A master cylinder (,) in a vehicle hydraulic braking installation uhydraulic-fluid supply device for actuating wheel brake cylinders (,). The master cylinder (,) being isolated from the wheel brake cylinders (,) by at least one shut-off valve (,). The master cylinder (,) being associated with a simulator (,) having a piston (,) located in a simulator chamber (,). The piston (,) being subjected to fluid pressure of brake fluid from the master cylinder (,) and an elastic element (,). The master cylinder (,) being of the having a primary piston (,) and a secondary piston (,) slidably located in a bore (,) of a housing (,). Bore (,) has a peripheral groove (,) which is associated with a land (,) on the secondary piston (,) to allow communication with the simulator chamber (,) when the master cylinder (,) is in a positon of rest. A sealing element (,) carried by the secondary piston (,) engages the housing when the secondary piston moves to interrupt communicaton between the bore (,) and simulator chamber (,) to thereafter simulate brake actuation travel.