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:
Aug. 14, 2018
Filed:
Jul. 21, 2015
Applicant:
Hamilton Sundstrand Corporation, Charlotte, NC (US);
Inventors:
Assignee:
HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01C 21/08 (2006.01); F04C 2/34 (2006.01); F04C 18/24 (2006.01); F04C 2/344 (2006.01);
U.S. Cl.
CPC ...
F01C 21/0836 (2013.01); F01C 21/0863 (2013.01); F04C 2/3446 (2013.01); F04C 18/24 (2013.01);
Abstract
A vane pump is disclosed that includes a plurality of vanes and radial slots configured to provide a gap between the vane and the radial slot such that the vane has a different angular position relative to the direction of rotation in a radially extended position compared to an angular position in a radially-retracted position. The different angular positions provide different orientation of the arcuate surface of the vane tip portion with respect to the cam body inner surface, thus providing different fluid stop points on the vane tip portion arcuate surface.