Back to results
US 7,731,623 B2Granted
Automatic transmission
AssigneeAisin Aw Co., Ltd.
InventorsMasaaki Nishida, Hiroshi Katou, Masashi Kitou, Kohei Iizuka
Life of this patent
Estimating the term…
Abstract
An automatic transmission includes two clutches that are disposed such that they overlap in an axial direction and occupy different positions in a radial direction. Each of the two clutches includes a clutch drum, a piston that forms a working fluid chamber for which a portion of the clutch drum serves as a cylinder, a plurality of friction plates that engage the clutch drum, and a cancel oil chamber that is disposed on a rear face side of the piston and that cancels a centrifugal oil pressure that acts on the working fluid chamber.
Claims6
An automatic transmission, comprising:
- two clutches that are disposed such that they overlap in an axial direction and occupy different positions in a radial direction, each of the two clutches comprising:
- a clutch drum,
- a piston that forms a working fluid chamber for which a portion of the clutch drum serves as a cylinder,
- a plurality of friction plates that engage the clutch drum, and
- a cancel oil chamber that is disposed on a rear face side of the piston and that cancels a centrifugal oil pressure that acts on the working fluid chamber,
- wherein:
- the working fluid chamber and the cancel oil chamber of one clutch of the two clutches that is disposed outside in the radial direction are respectively disposed to the outside in the radial direction in relation to the working fluid chamber and the cancel oil chamber of the other clutch of the two clutches, and
- oil is supplied to the cancel oil chamber of the one clutch of the two clutches that is disposed to the outside in the radial direction through a gap between the clutch drum of the other clutch of the two clutches and the clutch drum of the one clutch of the two clutches that is disposed to the outside in the radial direction.
5 more elements
Dependencies are inferred from the claim text.