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.

Date of Patent:
Nov. 17, 2015

Filed:

Jun. 08, 2011
Applicants:

Claudio Bulgarelli, Modena, IT;

Massimo Riva, Modena, IT;

Inventors:

Claudio Bulgarelli, Modena, IT;

Massimo Riva, Modena, IT;

Assignee:

HYDROCONTROL S.P.A. CON UNICO SOCIO, Castel San Pietro Terme, IT;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 11/16 (2006.01); F17D 1/00 (2006.01); E02F 3/32 (2006.01); E02F 9/22 (2006.01);
U.S. Cl.
CPC ...
F17D 1/00 (2013.01); E02F 3/325 (2013.01); E02F 9/2225 (2013.01); F15B 11/163 (2013.01); F15B 2211/30555 (2013.01); F15B 2211/50536 (2013.01); F15B 2211/6055 (2013.01); F15B 2211/654 (2013.01); Y10T 137/87917 (2015.04);
Abstract

Hydraulic system for actuating the hydraulic actuators of a working machine, the hydraulic system has a delivery, a discharge, a drainage line, a signal line, a main slide valve which actuates a corresponding hydraulic actuator, a safety slide valve integral with the main slide valve and adapted for opening or closing the drainage line itself, and a pressure compensator presenting a frontal chamber connectable by way of the main slide valve to the delivery and a rear chamber connected to the signal line; the drainage line connecting a node of the signal line to the discharge.


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