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:
Oct. 14, 2014
Filed:
Apr. 18, 2011
Applicant:
Patrick Opdenbosch, Peoria, IL (US);
Inventor:
Patrick Opdenbosch, Peoria, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 31/02 (2006.01); F15B 13/043 (2006.01); E02F 9/22 (2006.01); F15B 7/00 (2006.01); F15B 11/00 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2217 (2013.01); E02F 9/226 (2013.01); F15B 2211/27 (2013.01); F15B 2211/613 (2013.01); E02F 9/2296 (2013.01); F15B 2211/761 (2013.01); E02F 9/2289 (2013.01); E02F 9/2267 (2013.01); F15B 2211/20553 (2013.01); F15B 7/006 (2013.01); E02F 9/2292 (2013.01); F15B 11/003 (2013.01); F15B 2211/3058 (2013.01); F15B 2211/50527 (2013.01);
Abstract
A hydraulic system includes an actuator, a pump, rod side and cap side fluid connections between the pump and the rod and cap side chambers, respectively, at least one selectively actuatable regeneration valve that selectively provides flow from the cap side fluid connection to the rod side fluid connection, and a controller. The controller controls the pump to selectively vary the flow rate of the pump in response to a commanded motion to control movement of the piston. The controller actuates the regeneration valve during a retraction of the piston into the cylinder when pump is acting as a motor.