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. 12, 2008
Filed:
Jun. 08, 2006
David C. Ochab, Horseheads, NY (US);
Brendan Brewer, Elmira, NY (US);
Matthew J. Cowen, Horseheads, NY (US);
Kelly P. Heath, Corning, NY (US);
John M. Hasson, Jr., Elmira, NY (US);
David C. Ochab, Horseheads, NY (US);
Brendan Brewer, Elmira, NY (US);
Matthew J. Cowen, Horseheads, NY (US);
Kelly P. Heath, Corning, NY (US);
John M. Hasson, Jr., Elmira, NY (US);
The Hilliard Corporation, Elmira, NY (US);
Abstract
A pump includes a cam member and an armature plate received on an input shaft rotatably supported with a differential housing of a clutch. The pump also includes a cylinder rod slidingly received in a chamber of a master cylinder to pressurize a hydraulic fluid. The cam member includes a ring and a back plate. The ring has an outer, preferably symmetrical, surface with a variable radius defining a ramped portion for outwardly driving the cylinder rod when the cam member is rotated either forward or backward with respect to the differential housing. A coil generates an electromagnetic field when activated drawing the cam member towards the armature plate such that contact forces causes the cam member to rotate with the armature plate. A roller disc is rotatably supported at one end of the cylinder rod for rolling contact between the cylinder rod and the cam surface of the cam member ring.