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:
May. 01, 1984
Filed:
Jun. 04, 1981
Applicant:
Inventor:
Gerald M Sivulka, Ann Arbor, MI (US);
Assignee:
Kelsey Hayes Company, Romulus, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ;
U.S. Cl.
CPC ...
303 / ; 188195 ; 188349 ; 303 / ;
Abstract
A hydraulic braking system is provided for vehicles which frequently experience variable loading conditions ranging from maximum to near minimum gross vehicle weights. The system comprises dual proportioning valves, hydraulically in series with one another, one valve includes a unique spring driven digital cam which, in response to compression of the vehicle suspension system, selects the desired master cylinder to brake pressure relationship for the vehicle load condition.