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:
Jan. 17, 1989
Filed:
Jun. 17, 1987
Horst P Becker, Frankfurt am Main, DE;
Alfred Teves GmbH, Frankfurt am Main, DE;
Abstract
In a brake system, two groups of wheel brakes (17, 18) and a brake valve (12) for controlling the initial pressure of a pump (24) are connected to the two brake lines (10, 15; 11, 16) of a tandem master cylinder (1). Through the brake valve (12), the flow of delivery of the pump (24), is restricted in response to the pressure in the brake conduits (10, 11), thereby generating, in a pressure conduit (26) in communication with the pump outlet, a pressure proportional to the master cylinder pressure and, through check valves (31, 32), being fed into the brake conduits (15, 16) leading to the wheel brakes (17, 18). The pump outlet (26), moreover, through a pressure conduit (33), is in communication with a reserve pressure chamber (34) separated through a piston (35) from the working chamber (6) of the tandem master cylinder (1). Upon failure of the pressure fluid supply through pump (24), the pressure fluid required for applying the brake can be displaced from the reserve pressure chamber (34) by applying the brake pedal (2).