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US 8,281,916 B2Granted
Clutch tooth index and step for multiple cast clutches in one housing
AssigneeAllison Transmission, Inc.
InventorGlen S. Hawkins
Life of this patent
Estimating the term…
Abstract
A housing for a multi-stage clutch assembly is formed to include a shoulder upon which a backing plate of a first stage clutch pack may be positioned to transfer a load from the first stage clutch pack to the housing.
Claims20
A housing for a multi-stage clutch assembly comprising
- a first stage support portion configured to support a plurality of first reaction plates and including a plurality of first stage splines, and
- a second stage support portion configured to receive a plurality of second reaction plates and including a plurality of second stage splines,
- wherein (i) the housing is formed to include a shoulder upon which a backing plate of a first stage clutch pack may be positioned to transfer a load from the first stage clutch pack to the housing and (ii) each second stage spline has first and second side surfaces, the first side surface extending to form a first side surface of a first stage spline and the second side surface extending to form a second side surface of a second first stage spline.
A multi-stage clutch assembly comprising
- a housing including a first stage support portion and a second stage support portion,
- a plurality of first stage reaction plates supported in the first stage,
- a plurality of second stage reaction plates supported in the second stage, and
- a backing plate engaged with the housing, the backing plate positioned between the first stage and the second stage and configured to transfer a load from the first stage directly to the housing,
- wherein the housing comprises a first stage support portion and a second stage support portion and wherein the first stage support portion includes a plurality of first stage splines positioned about an inner surface of the housing, and the second stage support portion includes a plurality of second stage splines positioned about the inner surface of the housing, the second stage splines formed in groups, splines in the groups formed at a first spacing and the groups of splines spaced apart by a second spacing greater than the first.
2 more elements
An automatic transmission comprising
- a housing formed to include a stop,
- a first clutch pack supported in the housing,
- a second clutch pack supported in the housing, and
- a separator positioned between the first clutch pack and the second clutch pack, the separator engaged with the stop to transfer the load of the first clutch pack to the housing,
- wherein the housing comprises a first clutch pack support portion and a second clutch pack support portion and wherein the first clutch pack support portion includes a plurality of first stage splines positioned about an inner surface of the housing, and the second clutch pack support portion includes a plurality of second stage splines positioned about the inner surface of the housing, the second stage splines formed in groups, splines in the groups formed at a first spacing and the groups of splines spaced apart by a second spacing greater than the first.
2 more elements
Dependencies are inferred from the claim text.