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US Patent 7686724 Torque transfer device with hydrostatic torque control system

Patent 7686724 was granted and assigned to American Axle on March, 2010 by the United States Patent and Trademark Office.

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Patent
Patent

Patent attributes

Current Assignee
American Axle
American Axle
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7686724
Patent Inventor Names
Curt D. Gilmore1
Russell T. Capito1
Date of Patent
March 30, 2010
Patent Application Number
11804405
Date Filed
May 17, 2007
Patent Primary Examiner
‌
Rodney H. Bonck
Patent abstract

In one form, the present teachings provide a power transmission device that includes a rotatable input shaft, a rotatable output shaft and a ring gear fixed for rotation with the input shaft. A carrier is fixed for rotation with the output shaft. A pump assembly includes an inner rotor supported for rotation on the carrier and an outer rotor encompassing the inner rotor. The outer rotor is in driving meshed engagement with the ring gear. The pump provides pressurized fluid to one of first and second fluid ports. A flow restrictor is moveable to selectively restrict fluid flow relative to one of the first and second ports.

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