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. 06, 2015
Filed:
Sep. 30, 2011
Applicant:
Michael L. Knussman, East Peoria, IL (US);
Inventor:
Michael L. Knussman, East Peoria, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
F16D 31/02 (2006.01); F15B 13/04 (2006.01); E02F 9/22 (2006.01); F15B 11/16 (2006.01); F15B 15/14 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2217 (2013.01); E02F 9/2289 (2013.01); E02F 9/2296 (2013.01); F15B 11/16 (2013.01); F15B 15/1476 (2013.01); F15B 2211/20546 (2013.01); F15B 2211/20561 (2013.01); F15B 2211/20569 (2013.01); F15B 2211/255 (2013.01); F15B 2211/27 (2013.01); F15B 2211/30575 (2013.01); F15B 2211/327 (2013.01); F15B 2211/351 (2013.01); F15B 2211/625 (2013.01); F15B 2211/6346 (2013.01); F15B 2211/665 (2013.01); F15B 2211/6652 (2013.01); F15B 2211/6654 (2013.01); F15B 2211/7053 (2013.01); F15B 2211/7107 (2013.01); F15B 2211/7128 (2013.01); F15B 2211/88 (2013.01);
Abstract
A hydraulic system is disclosed. The hydraulic system may have a pump with variable-displacement, a first linear actuator, and a second linear actuator coupled to the first linear actuator to operate in tandem. The first and second linear actuators may be connected to the pump in closed-loop manner, and each of the first and second linear actuators may have a first chamber and a second chamber separated by a piston. The hydraulic system may also have an accumulator in fluid communication with the second chamber of only the second linear actuator.