Sealing sleeve for a hydraulic actuator
AssigneeGeneral Motors Corporation
InventorScott H. Wittkopp
Life of this patent
Estimating the term…
Abstract
A transmission includes at least one planetary gear set, a first clutch pack having a plurality of first clutch plates, and a second clutch pack located in series axially with the first clutch pack. The second clutch pack has a plurality of second clutch plates. A clutch apply member associated with the second clutch pack protrudes through the first clutch plates of the first clutch pack. A substantially cylindrical seal member is positioned between the first clutch pack and second clutch pack for preventing substantial flow of cooling fluid between the first and second clutch packs to direct cooling fluid through the second clutch pack when the second clutch pack is applied by the clutch apply member.
Claims11
A transmission including at least one planetary gear set, the transmission comprising:
- a first clutch pack having a plurality of first clutch plates;
- a second clutch pack located in series axially with the first clutch pack, said second clutch pack having a plurality of second clutch plates;
- wherein a clutch apply member associated with the second clutch protrudes through said first clutch plates of the first clutch pack;
- and
- a substantially cylindrical seal member positioned between the first clutch pack and second clutch pack for preventing substantial flow of cooling fluid between the first and second clutch packs and to direct the cooling fluid through the second clutch pack when the second clutch pack is applied by the clutch apply member.
A method of directing cooling fluid through a starting clutch pack arranged in series axially with a first clutch pack, wherein a clutch apply member extends through the first clutch pack for applying the starting clutch pack, and wherein there is a gap between the starting clutch pack and first clutch pack, the method comprising:
- positioning a substantially cylindrical seal member in the gap between the first clutch pack and the starting clutch pack to prevent substantial flow of cooling fluid through the gap and to cause the cooling fluid to flow through the starting clutch pack for cooling when the starting clutch pack is applied by the clutch apply member.
A transmission including at least one planetary gear set, the transmission comprising:
- a first clutch pack having a plurality of first clutch plates;
- a starting clutch pack located in series axially with the first clutch pack, said starting clutch pack having a plurality of starting clutch plates;
- wherein a clutch apply member associated with the starting clutch pack protrudes through said first clutch plates of the first clutch pack;
- a substantially cylindrical seal member positioned between the first clutch pack and the starting clutch pack for preventing substantial flow of cooling fluid between the first clutch pack and the starting clutch pack and to direct the cooling fluid through the starting clutch pack when the starting clutch pack is applied by the clutch apply member;
- and
- wherein said substantially cylindrical seal member has a ring portion with a radially inwardly protruding disk portion, and the ring portion is positioned radially outwardly from the clutch apply member, and the disk portion is positioned between the clutch apply member and the starting clutch pack.
Dependencies are inferred from the claim text.