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:
Mar. 22, 2011
Filed:
Feb. 28, 2008
Jiao Zhang, Naperville, IL (US);
Pengfei MA, Naperville, IL (US);
Michael R. Schwab, Crest Hill, IL (US);
Tonglin Shang, Bolingbrook, IL (US);
Kalpesh N. Patel, Romeoville, IL (US);
Jiao Zhang, Naperville, IL (US);
Pengfei Ma, Naperville, IL (US);
Michael R. Schwab, Crest Hill, IL (US);
Tonglin Shang, Bolingbrook, IL (US);
Kalpesh N. Patel, Romeoville, IL (US);
Caterpillar Inc., Peoria, IL (US);
Caterpillar S.A.R.L., Geneva, CH;
Abstract
This disclosure relates to a hydraulic system and method that converts the kinetic energy generated by the operation of a swing motor into hydraulic potential energy and reuses the hydraulic potential energy for swing motor acceleration. An accumulator can be provided for storing exit oil from the swing motor that is pressurized by the inertia torque applied on the moving motor via movement of an upper structure of a machine. The pressurized oil in the accumulator can be reused to accelerate the swing motor by supplying pressurized oil to the swing motor.