Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1990-03-29
1991-08-13
Rachuba, M.
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
51245, 51170PT, 51181NT, 1510403, 1510409, 151041R, B24B 1900
Patent
active
050385259
ABSTRACT:
A pipe end polishing apparatus and method which comprises a cradle having an open section and a pair of pivotable doors covering the open sections and adapted to move between an open, pipe receiving position and a closed, pipe polishing position, the doors biased to remain in an open, pipe receiving position. The doors and the cradle contain a resilient material on the inner surface to retain a pipe to be polished in the pipe polishing position. An endless belt is adapted to be placed about the exterior surface of the cradle and over the doors surface in the open, pipe receiving position and in the closed, polishing position to surround the end of the pipe to be polished. The method comprises placing a pipe to be polished in the pipe receiving position and moving the pipe radially downward so that the doors snap into a pipe polishing position, rotating the cradle, preferably by a power hand drill, to polish the pipe end and removing the pipe axially from the one end of the cradle to permit the doors to move again to the pipe receiving position for the next pipe to be polished.
REFERENCES:
patent: 2045511 (1936-06-01), Babcock
patent: 2225272 (1940-12-01), Horne
patent: 2303824 (1942-12-01), Comins
patent: 3188674 (1965-06-01), Hobbs
patent: 4246728 (1981-01-01), Leasher
patent: 4468829 (1984-09-01), Christiansen
patent: 4862549 (1989-09-01), Criswell
Crowley Richard P.
Rachuba M.
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