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:
Jun. 11, 2019
Filed:
Feb. 11, 2014
Borgwarner Torqtransfer Systems Ab, Landskrona, SE;
Gustaf Lagunoff, Umeå, SE;
Axel Wallgren, Lund, SE;
Gunnar Jonesand, Eslöv, SE;
Bo Lundström, Glumslöv, SE;
BorgWarner Sweden AB, Landskrona, SE;
Abstract
A hydraulic pump assembly comprises a rotatable piston drum () with at least one centrifugal lever () pivotally attached thereto for radial movements between radial flanges () under the action of centrifugal force at rotation of the piston drum. The centrifugal lever () is arranged to control the position of a valve member, preferably a ball (), at the opening end of a bore () in the piston drum (). There is a defined friction surface () between the lever () and one of the radial flanges (), and there are spring means (-) for resiliently biasing the lever against said one of the flanges.