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. 18, 2014
Filed:
Mar. 10, 2011
Applicants:
Martin Baechle, Frankfurt, DE;
James John Rizzo, Macomb, MI (US);
Yuji Nakayasu, Troy, MI (US);
Inventors:
Assignee:
Continental Automotive Systems, Inc., Auburn Hills, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T 13/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hydraulic brake system equipped for anti-slip control and for active brake interventions has a self-priming pump. A pressure retention valve prevents the brake system's low-pressure accumulator and the wheel brakes from being evacuated below atmospheric pressure during a sensitive brake operation. A two-position valve deactivates the bias of the pressure retention valve by opening a fluid path from the low-pressure accumulator to the pump when it is desired that the wheel brakes be retracted farther to reduce drag and excessive wear of the brake friction elements.