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:
Mar. 10, 1981
Filed:
Aug. 25, 1978
Applicant:
Inventor:
Jean L Dauvergne, Survilliers, FR;
Assignee:
Societe Anonyme Francaise du Ferodo, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ;
U.S. Cl.
CPC ...
60548 ; 60556 ; 60581 ;
Abstract
A hydraulic control system for a brake device comprises independent first and second brake circuits, the first circuit communicating with a first chamber pressurized by movement of a master piston actuated by a brake pedal, and the second circuit communicating with a second chamber whose pressure is dependent on that of the first and is developed by an assistance circuit, the second chamber being separated from the assistance circuit by a piston.