Splined annular member and automatic transmission

Details Splined annular member and automatic transmission Splined annular member and automatic transmission

2005-03-22

2005-03-22

Bonck, Rodney H (Department: 3681)

192 clutches and power-stop control

Clutches

Axially engaging

C074S434000

Reexamination Certificate

active

06868950

ABSTRACT:
A splined annular member has spline teeth formed in its cylindrical wall. The teeth are formed as an arrangement of alternating ridges which protrude inwardly and troughs formed between the ridges. Each ridge has a transverse (circumferential) groove that extends outwardly. The groove is defined by two side walls that face each other and a bottom portion extending between the side walls. The side walls are substantially parallel to each other, and at least one of the junctions between the bottom portion and the side walls is formed by half blanking. The spline grooves increase the overall rigidity of the annular member without increase in weight or size. Thus, the present invention provides a light-weight and small-size splined annular member having high rigidity and an automatic transmission incorporating the splined annular member.

REFERENCES:
patent: 4014619 (1977-03-01), Good et al.
patent: 4566571 (1986-01-01), Fujioka
patent: 4705150 (1987-11-01), Hill
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patent: 4945782 (1990-08-01), Farrell
patent: 5069575 (1991-12-01), Anderson
patent: 5180043 (1993-01-01), Walker
patent: 5881856 (1999-03-01), Prater
patent: 5896970 (1999-04-01), Prater
patent: 6095006 (2000-08-01), Morita et al.
patent: 6530253 (2003-03-01), Gotou et al.

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