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US Patent 7694793 One-way clutch with dog-clutch and synchronizer

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Patent abstractTimelineTable: Further ResourcesReferences
Is a
Patent
Patent

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7694793
Date of Patent
April 13, 2010
Patent Application Number
11622597
Date Filed
January 12, 2007
Patent Citations Received
‌
US Patent 11713789 Clutch assembly
3
‌
US Patent 11661979 Dog clutch with ratcheting one-way clutch
4
Patent Primary Examiner
‌
Richard M Lorence
Patent abstract

A clutch assembly is provided for use in a vehicle having an automatic transmission, the assembly including a clutch-apply piston and an integrated one-way clutch, dog clutch apply plate, and synchronizer clutch having a synchronizer plate and a rotating synchronizer cone. The clutch assembly is actuated by a clutch-apply piston configured to axially displace the dog clutch apply plate, thereby engaging the synchronizer plate with the rotating synchronizer cone to synchronize the respective speeds of the synchronizer plate and dog clutch apply plate during a gear shifting event. Upon speed synchronization, continued axial displacement of the clutch-apply piston completes engagement of the dog clutch apply plate to achieve a coast gear state. A return spring provides a return spring force for disengaging the clutch apply piston to permit selection of an alternate gear state during a subsequent gear shifting event.

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