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:
Jul. 11, 1989
Filed:
Apr. 13, 1988
Applicant:
Inventors:
Piero Tha, Valperga Canavese, IT;
Gerry Warren, Vignate, IT;
Assignee:
Trinova S.p.A., Vignate, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
60427 ; 60460 ; 60464 ; 91518 ;
Abstract
A hydraulic operating circuit for working members of earth-moving machines includes linear and rotary hydraulic actuators each of which is associated with a respective hydraulic distributor supplied from a principal supply and with a pressure compensator of the load-sensing type. A re-supply circuit is also associated with one or more of the rotary actuators for integrating the leakage and includes two anticavitation valves and a valve for boost-feeding the anticavitation valves from the principal supply.