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. 18, 1993
Filed:
Sep. 12, 1991
Applicant:
Inventors:
Robert Gayfer, Ganonoque, CA;
Walter E Rojecki, Watertown, NY (US);
Assignee:
Knorr Brake Holding Corporation, Westminster, MD (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60T / ; B60T / ;
U.S. Cl.
CPC ...
303 222 ; 303-969 ; 303 228 ;
Abstract
An empty-load device, having in a single housing, a sensing piston and a ratio piston interconnected by a push rod which senses load. A ratio valve, including a valving element and valve seat, is mounted on and travels with the ratio piston and is opened by the push rod. The ratio valve is connected to the ratio piston by a spring such that the push rod engages the ratio valve to open the ratio valve and position the ratio piston via the spring.