Pinch roll unit

Details Pinch roll unit Pinch roll unit

2005-07-26

2005-07-26

Larson, Lowell A. (Department: 3725)

Metal deforming

With use of control means energized in response to activator...

Metal deforming by use of roller or roller-like tool element

C072S248000, C226S177000

Reexamination Certificate

active

06920772

ABSTRACT:
A pinch roll unit for either propelling or retarding a product moving along the pass line of a rolling mill comprises a pair of levers mounted for rotation about parallel first axes. Roll shafts are carried by the levers with each roll shaft being journalled for rotation about a second axis parallel to the first axis of its respective lever. Pinch rolls are carried by the roll shafts and are positioned to define a gap therebetween for receiving the product. An electrically powered first motor operates via a linkage to rotate the levers about the first axes and to move the pinch rolls between open positions spaced from the product, and closed positions contacting and gripping the product therebetween. An electrically powered second motor rotatably drives the pinch rolls.

REFERENCES:
patent: 3014628 (1961-12-01), Littlehale
patent: 3543555 (1970-12-01), Baumann et al.
patent: 3628594 (1971-12-01), Reinfeld et al.
patent: 3700379 (1972-10-01), Robertson
patent: 3776014 (1973-12-01), Artz et al.
patent: 4156453 (1979-05-01), Scheinecker
patent: 4280552 (1981-07-01), Bayer et al.
patent: 4283930 (1981-08-01), Hasegawa et al.
patent: 4388816 (1983-06-01), Ferket et al.
patent: 4413494 (1983-11-01), Gilvar et al.
patent: 4559990 (1985-12-01), Greilinger et al.
patent: 4635861 (1987-01-01), Resch

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