Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1991-09-25
1992-11-24
Parker, Roscoe V.
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
409179, 29 33A, B24B 1926
Patent
active
051652064
ABSTRACT:
A device is provided for grinding down the crown of a pipe weld joining aligned pipe sections so that the weld is substantially flush with the pipe sections joined by the weld. The device includes a cage assembly comprising a pair of spaced cage rings adapted to be mounted for rotation on the respective pipe sections on opposite sides of the weld, a plurality of grinding wheels, supported by the cage assembly for grinding down the crown of the weld, and a plurality of support shafts, each extending longitudinally along the joined pipe sections, parallel thereto, for individually mounting respective grinding wheels. Each end of the support shafts is mounted for rotation in a bearing assembly housed within a radially directed opening in a corresponding one of the cage rings so as to provide radial movement of the associated shaft, and thus of the associated grinding wheel, towards and away from the weld. A first drive sprocket provides rotation of the cage assembly around the pipe sections while a second drive unit, driven by a common motor, provides rotation of the grinding wheels.
REFERENCES:
patent: 2162187 (1939-06-01), Tharp
patent: 2455762 (1948-12-01), Hall
patent: 2693066 (1954-11-01), Berstecher
patent: 2696065 (1954-12-01), Harmes
patent: 3070926 (1963-01-01), Kidd
patent: 3149440 (1964-09-01), Maguire
patent: 3432971 (1969-03-01), Conti
patent: 4483106 (1984-11-01), Wachs et al.
Sette Primo J.
Sword Charles K.
Constant Richard E.
Kosovich Judy K.
Moser William R.
Parker Roscoe V.
The United States of America as represented by the United States
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