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. 23, 1999
Filed:
Jul. 19, 1996
Applicant:
Inventors:
Blaise J Ganzel, Ann Arbor, MI (US);
Ronald L Sorensen, Erie, MI (US);
Assignee:
Kelsey-Hayes, Livonia, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ;
U.S. Cl.
CPC ...
3031132 ; 3031134 ; 3031161 ; 3031191 ;
Abstract
A hydraulic braking system providing anti-lock braking ('ABS') and traction control ('TC') incorporates a normally closed pilot-operated traction control switching valve to permit brake pressure in the driven wheel greater than master cylinder pressure. A dual flow return path can be used during brake release. The system also uses a normally open pilot-operated supply valve between the pump inlet and the master cylinder. The normally open pilot-operated valve references a low pressure fluid source and uses low friction seals.