Accumulator piston

Details Accumulator piston Accumulator piston

1997-11-10

1999-11-02

Luong, Vinh T.

Machine element or mechanism

Elements

Gear casings

92241, 92240, 92107, F16H 5702, F16J 900

Patent

active

059749105

ABSTRACT:
An accumulator piston for an automatic transmission. The piston comprises two components, the first and second being cup elements welded together with their closed ends in abutting relation. The lower cup includes a curled back portion with a radial flange having an axially extending bi-directional oil seal thereon, and spaced apart recesses in the curled back portion to permit oil to flow therein. The upper cup includes a radial flange of reduced diameter compared to the lower cup flange. The flange also has a lip seal thereon. The piston is spring-loaded and moves up and down in a bore and counterbore in response to fluid flow on either side of the piston to absorb shifting shocks.

REFERENCES:
patent: 2181900 (1939-12-01), Langdon
patent: 3103991 (1963-09-01), Flinn
patent: 3183795 (1965-05-01), Kirk
patent: 3557911 (1971-01-01), Ellard
patent: 3814226 (1974-06-01), White
patent: 4417503 (1983-11-01), Izumi
patent: 4635778 (1987-01-01), Lederman
patent: 4881453 (1989-11-01), Armstrong
patent: 4987796 (1991-01-01), Von Kaler et al.
patent: 5014599 (1991-05-01), Kocsis et al.
patent: 5492053 (1996-02-01), Stonehill
1992 AOD-E Transmission Theory and Diagnosis; Ford Parts and Service Division Technical Training; Sep., 1991; pp. 10 and 42.
Publication Unknown; 2 Sheets Attached; pp. 60 and 61.

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