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. 03, 2015
Filed:
Nov. 12, 2013
American Axle & Manufacturing, Inc., Detroit, MI (US);
Robert J. DeGowske, Fair Haven, MI (US);
Charles G. Stuart, Rochester Hills, MI (US);
American Axle & Manufacturing, Inc., Detroit, MI (US);
Abstract
The present teachings provide for a power transmitting component including a friction clutch, a reservoir, a hydraulic ram to actuate the clutch, a motor, and first and second pumps simultaneously driven by the motor. The first pump is in fluid communication with the reservoir and the ram. The first pump is configured to provide hydraulic fluid to the ram when the motor rotates in a first direction. The second pump is coupled to the reservoir and provides hydraulic fluid to the ram when the output shaft rotates in the first direction and a pressure differential between the ram and the second pump is less than or equal to a predetermined pressure differential. The second pump has a displacement greater than the first pump and is configured to provide hydraulic fluid to the ram at a lower pressure and higher flow rate than the first pump.