Retaining ring with shaped surface

Details Retaining ring with shaped surface Retaining ring with shaped surface

2011-04-18

2011-11-29

Nguyen, Dung Van (Department: 3723)

Abrading

Abrading process

Combined abrading

C451S059000, C451S398000

Reexamination Certificate

active

08066551

ABSTRACT:
A retaining ring can be shaped by machining or lapping the bottom surface of the ring to form a shaped profile in the bottom surface. The bottom surface of the retaining ring can include flat, sloped and curved portions. The lapping can be performed using a machine that dedicated for use in lapping the bottom surface of retaining rings. During the lapping the ring can be permitted to rotate freely about an axis of the ring. The bottom surface of the retaining ring can have curved or flat portions.

REFERENCES:
patent: 5205082 (1993-04-01), Shendon et al.
patent: 5584751 (1996-12-01), Kobayashi et al.
patent: 7094133 (2006-08-01), Masunaga et al.

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