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:
Nov. 02, 1982
Filed:
Oct. 17, 1980
Heinz Leiber, Leimen, DE;
Robert Mergenthaler, Heidelberg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A hydraulic brake force amplifier is proposed, which has a control valve actuatable via a travel-imparting spring which directs the exertion of pressure medium from a supply source as an auxiliary force. The travel-imparting spring disposed subsequent to the brake pedal provides sensitive response by the control valve. If the auxiliary force fails, the action of the travel-imparting spring is precluded, so that pedal travel is not used unnecessarily. In order to effect this preclusion, a barrier piston is used, which is exposed on one side to the force of a spring and on the other side to a varying pressure, so that it does not seize due to corrosion and always remains in a functionally ready condition. The combination of the brake force amplifier with an anti-wheel-lock apparatus is possible. The hydraulic brake force amplifier is preferably applicable in vehicle braking systems for passenger cars and light trucks.