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:
Nov. 27, 2012
Filed:
Dec. 22, 2009
John Czepak, Burnaby, CA;
Gerald Dyck, Abbotsford, CA;
Mikael Karlsson, Trollhattan, SE;
Robert Amnerud, Lidkoping, SE;
Per-ola Vallebrant, Trollhattan, SE;
John Czepak, Burnaby, CA;
Gerald Dyck, Abbotsford, CA;
Mikael Karlsson, Trollhattan, SE;
Robert Amnerud, Lidkoping, SE;
Per-Ola Vallebrant, Trollhattan, SE;
Parker-Hannifin Corporation, Cleveland, OH (US);
Kinetics Drive Solutions, Inc., B.C., CA;
Abstract
A hydraulic machine includes a support structure and a rotating group rotatably mounted relative to the support structure. The rotating group includes a shaft and a cylinder barrel with a plurality of circumferentially spaced cylinder bores. Reciprocal pistons extend from the shaft with each one of the pistons extending into an associated one of the cylinder bores. A joining assembly joins the shaft and the cylinder barrel so that the shaft and the cylinder barrel rotate together. The hydraulic machine further includes at least one oil dam associated with the rotating group and adapted to trap hydraulic fluid used for lubricating portions of the joining assembly.