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:
Feb. 09, 2010
Filed:
Jan. 30, 2006
Applicants:
David P. Smith, Reddick, IL (US);
Igor Strashny, Grenoble, FR;
Daniel T. Mather, Lockport, IL (US);
Inventors:
Assignee:
Caterpillar Inc., Peoria, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
F16D 31/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hydraulic energy recovery device for a hydraulic system is disclosed. The hydraulic energy recovery device has a first impeller configured to receive a flow of pressurized liquid, and a second impeller configured to pressurize a flow of liquid. The hydraulic energy recovery device also has a common shaft connecting the first and second impellers.