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:
Dec. 18, 1984
Filed:
May. 28, 1982
Applicant:
Inventor:
Werner Tischer, Bobingen, DE;
Assignee:
Zahnradfabrik Friedrichshafen, A.G., Friedrichshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
60384 ; 91448 ; 91516 ; 91530 ;
Abstract
A flow regulating channel in a servo steering valve controls exhaust flow with varying restriction from a fluid operating motor while controlling operation of a separate steering servo motor on a priority basis. An operational control valve for the fluid operating motor has a valve passage that is open only in the neutral position to complete a recirculating flow path from a common servo pump through the flow regulating channel that is fully open in the neutral position of the steering valve.