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:
Jun. 09, 2015
Filed:
Jun. 15, 2012
Applicant:
Gang Wen, Dunlap, IL (US);
Inventor:
Gang Wen, Dunlap, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D 31/02 (2006.01); F15B 1/02 (2006.01); F15B 21/14 (2006.01); E02F 9/22 (2006.01);
U.S. Cl.
CPC ...
F15B 1/024 (2013.01); F15B 21/14 (2013.01); F15B 2211/212 (2013.01); F15B 2211/3059 (2013.01); F15B 2211/7107 (2013.01); F15B 2211/7128 (2013.01); F15B 2211/761 (2013.01); F15B 2211/88 (2013.01); E02F 9/2217 (2013.01); E02F 9/2296 (2013.01);
Abstract
Hydraulic unit adapted for connection to master and slave actuator system includes three valves, the first configured for selective fluid passage between the cap ends, the second configured for selective fluid passage between the slave cap end and an accumulator, and the third fluidly coupled for selective fluid passage between each of a single pump and the accumulator, and the slave cap end. During actuator retraction, the valves permit pressurized fluid in the slave cap end to be delivered to accumulator for storage; during extension, the valves permit pressurized fluid from pump and accumulator to be delivered to the slave cap end.