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:
May. 03, 2005
Filed:
Mar. 16, 2004
Applicants:
Hans Christian Petersen, Nordborg, DK;
Jorgen Pedersen, Nordborg, DK;
Inventors:
Hans Christian Petersen, Nordborg, DK;
Jorgen Pedersen, Nordborg, DK;
Assignee:
Sauer-Danfoss ApS, , DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03C002/00 ;
U.S. Cl.
CPC ...
Abstract
A rotary fluid pressure device has a first oil passage with relatively high pressure fluid therein surrounding the gear set; a plurality of second oil passageways connecting the first oil passageway to the expanding and contracting oil chambers; and fluid non-return valves in each of the second oil passageways to permit the flow of oil therethrough only in a direction from the oil chambers to the first oil passageway.