Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 1, 2017
Patent Application Number
15124191
Date Filed
March 26, 2015
Patent Citations Received
Patent Primary Examiner
Patent abstract
A speed change device that includes a first clutch that includes a first piston, a first engagement oil chamber, and a first clutch drum that has a first outer tubular portion which extends in an axial direction and with which an outer peripheral portion of a first friction engagement plate is fitted, and a second clutch that includes a second piston, a second engagement oil chamber, and a second clutch drum that has a second inner tubular portion that extends in the axial direction and that slidably supports an inner peripheral portion of the second piston.
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