Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1997-12-02
1999-08-10
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
2989332, 192 702, B21H 502
Patent
active
059341262
ABSTRACT:
An internally toothed member is shown suitable for use as a clutch drum in an automatic transmission. The internally toothed member has the shape of a cup with an open end and a central axis. The cup-shaped member has first internal teeth extending in the axial direction and second internal teeth extending further toward the open end of the member than the first internal teeth. The internal teeth are each formed on an inner circumferential surface of the cup-shaped member in each of a plurality of locations spaced in the circumferential direction. Also, a groove for receiving a snap ring is formed in the second internal teeth closer to the open end than end faces of the first internal teeth facing the open end. Because the first and second internal teeth are formed projecting radially inward, they do not lower the rigidity of the internally toothed member. Also, because it is not necessary to fix a cylindrical member to the outside of the internally toothed member for reinforcement, working man-hours can be reduced and it is possible to lower the cost of the internally toothed member.
REFERENCES:
patent: 5384949 (1995-01-01), Wodrich et al.
Ando Mitsuhiko
Fukukawa Osamu
Kato Naoji
Maruki Michio
Nagai Hideyuki
Aisin Aw Co. Ltd.
Larson Lowell A.
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