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:
Jan. 13, 1987
Filed:
Mar. 14, 1985
Applicant:
Inventor:
Ronald B Walters, Wembley, GB;
Assignee:
Vickers, Incorporated, Troy, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F15B / ;
U.S. Cl.
CPC ...
13762564 ; 13762563 ;
Abstract
In a hydraulic valve with flow feedback there is provided a position sensor (13) to sense the position of the flow-controlling valve member and provide a position feedback signal. The flow and position feedback signals are compared and a switching circuit (143) selects whichever of the signals indicates the larger flow.