Metal deforming – By use of roller or roller-like tool-element – With carrier for roller-couple or tool-couple
Reexamination Certificate
2006-08-01
2006-08-01
Banks, Derris H. (Department: 3725)
Metal deforming
By use of roller or roller-like tool-element
With carrier for roller-couple or tool-couple
C072S238000
Reexamination Certificate
active
07082801
ABSTRACT:
A tightening and untightening tool for a roll bearing assembly of a rolling mill has a box-shaped body of toroidal shape with a central hole fitting around the cylindrical end part of a back-up roll. It has drive keys that slide into corresponding drive splines on the outside of the locknut and a torque reaction slot that fits over a reaction plate. The tool is provided with a hydraulic drive motor for tightening with bearing locknut against a thrust bearing.
REFERENCES:
patent: 3003836 (1961-10-01), Hill
patent: 3289282 (1966-12-01), Shaffer
patent: 3531969 (1970-10-01), Amino et al.
patent: 4186629 (1980-02-01), Costes
patent: 4341426 (1982-07-01), Clapp
patent: 4589269 (1986-05-01), Michaux
patent: 5029461 (1991-07-01), Lawrence et al.
patent: 5046870 (1991-09-01), Ordo
patent: 6286394 (2001-09-01), Kark
patent: 49-51152 (1974-05-01), None
patent: 56-91914 (1981-07-01), None
Patent Abstracts of Japan vol. 005, No. 166 (M-093), Oct. 23, 1981—& JP 56 091914 A (Kobe Steel Ltd), Jul. 25, 1981 abstract (of JP56-91914).
Banks Derris H.
Bonk Teresa M.
Danieli & C.Officine Meccaniche S.p.A.
Sampson & Associates P.C.
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