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:
Jul. 11, 2017

Filed:

Nov. 19, 2014
Applicant:

Caterpillar Inc., Peoria, IL (US);

Inventors:

Corey Lee Gorman, Peoria, IL (US);

John J. Krone, Peoria, IL (US);

Adam Martin Nackers, East Peoria, IL (US);

Assignee:

Caterpillar Inc., Peoria, IL (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 11/024 (2006.01); E02F 9/22 (2006.01); F15B 21/14 (2006.01); E02F 3/32 (2006.01); E02F 9/08 (2006.01); F15B 1/02 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2225 (2013.01); E02F 3/32 (2013.01); E02F 9/0866 (2013.01); E02F 9/2285 (2013.01); F15B 1/024 (2013.01); F15B 21/14 (2013.01); F15B 2211/212 (2013.01); F15B 2211/329 (2013.01); F15B 2211/353 (2013.01); F15B 2211/355 (2013.01); F15B 2211/6355 (2013.01); F15B 2211/67 (2013.01); F15B 2211/7058 (2013.01); F15B 2211/7135 (2013.01); F15B 2211/761 (2013.01);
Abstract

A hydraulic system is disclosed for use with a machine. The hydraulic system may have a pump configured to pressurize fluid, a first actuator configured to receive pressurized fluid from the pump, and an accumulator configured to receive fluid from the first actuator. The hydraulic system may also have a second actuator configured to receive pressurized fluid from the pump and the accumulator, and a pilot circuit configured to receive pressurized fluid from the pump and the accumulator. The hydraulic system may further have at least one valve movable to provide priority of fluid flow from the accumulator to the pilot circuit over the second actuator when a pressure of the accumulator is less than a low-pressure threshold.


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