Device for correcting circumferential length of metal ring

Details Device for correcting circumferential length of metal ring Device for correcting circumferential length of metal ring

2005-02-15

2005-02-15

Tolan, Ed (Department: 3725)

Metal deforming

By use of tool acting during relative rotation between tool...

During rotation of work

C072S111000

Reexamination Certificate

active

06854310

ABSTRACT:
An apparatus for correcting the circumferential length of a metal ring has a drive roller2and a driven roller3positionable closely to each other for training a metal ring W therearound, and a correcting roller4disposed between the drive roller2and the driven roller3. The apparatus also has a first displacement applying unit for displacing the drive roller2and the driven roller3away from each other when the metal ring W is trained around the drive roller2, the driven roller3, and the correcting roller4. The apparatus further includes spacers21, 22for spacing the drive roller2and the driven roller3a predetermined distance from each other when the drive roller2and the driven roller3are released from being displaced, a second displacement applying unit27for displacing the correcting roller4in a direction perpendicular to the direction in which the drive roller2and the driven roller3are displaced and also to extend the metal ring W, thereby to correct the circumferential length of the metal ring W, and a third displacement applying unit91for displacing the drive roller2and the driven roller3toward each other when the drive roller2, the driven roller3, and the correcting roller4are released from being displaced by the first and second displacement applying units10, 27.

REFERENCES:
patent: 4164134 (1979-08-01), Vollers
patent: 5640868 (1997-06-01), Lauener
patent: 6318140 (2001-11-01), Yamagishi et al.
patent: 1 092 488 (2001-04-01), None
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patent: 11-281342 (1999-10-01), None
patent: 11-290971 (1999-10-01), None
patent: 2000-266130 (2000-09-01), None

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