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:
Sep. 26, 2017
Filed:
May. 02, 2014
Applicant:
Caterpillar Inc., Peoria, IL (US);
Inventors:
Marek Golebiowski, Lombard, IL (US);
Christopher W. Pruess, Plainfield, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 1/22 (2006.01); F04B 1/20 (2006.01); F04B 27/08 (2006.01); F16C 17/02 (2006.01); F01B 3/00 (2006.01); F16C 19/50 (2006.01); F03C 1/06 (2006.01); F04B 1/14 (2006.01);
U.S. Cl.
CPC ...
F04B 1/2085 (2013.01); F01B 3/0073 (2013.01); F03C 1/0671 (2013.01); F04B 1/148 (2013.01); F04B 1/22 (2013.01); F04B 27/0865 (2013.01); F16C 17/02 (2013.01); F16C 19/502 (2013.01); F16C 2240/60 (2013.01);
Abstract
In a piston pump assembly, cradle bearings support a swash plate on an inner surface of a housing assembly. The cradle bearing and/or the corresponding portion of the housing inner surface may have undercut portions allowing deflection of an inward portion of the cradle bearing when the swash plate is subjected to pressure forces from hydraulic fluid compressed within pump cylinders by the pump pistons. Deflection of the cradle bearings allows increased contact pressure to be further distributed across the engaging surfaces of the swash plates and the cradle bearings.