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:
Sep. 13, 2016
Filed:
Aug. 26, 2014
Applicant:
Ut-battelle, Llc, Oak Ridge, TN (US);
Inventors:
Randall F. Lind, Loudon, TN (US);
Lonnie J. Love, Knoxville, TN (US);
Assignee:
UT-Battelle, LLC, Oak Ridge, TN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 21/14 (2006.01); F15B 11/036 (2006.01); F15B 11/00 (2006.01); F15B 15/22 (2006.01);
U.S. Cl.
CPC ...
F15B 11/036 (2013.01); F15B 11/006 (2013.01); F15B 15/228 (2013.01); F15B 21/14 (2013.01); F15B 2211/30575 (2013.01); F15B 2211/625 (2013.01); F15B 2211/7055 (2013.01); F15B 2211/7107 (2013.01); F15B 2211/761 (2013.01); F15B 2211/88 (2013.01);
Abstract
Hydraulic actuation systems having variable displacements and energy recovery capabilities include cylinders with pistons disposed inside of barrels. When operating in energy consuming modes, high speed valves pressurize extension chambers or retraction chambers to provide enough force to meet or counteract an opposite load force. When operating in energy recovery modes, high speed valves return a working fluid from extension chambers or retraction chambers, which are pressurized by a load, to an accumulator for later use.