Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1990-12-05
1991-12-31
Rachuba, M.
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
51241B, 269 481, B24B 1900
Patent
active
050760254
ABSTRACT:
In accordance with the invention a mount is provided for positioning a grinder on a pipe of any diameter selected from a given range of pipe diameters. The mount has a threaded plunger with a joint fixed at its lower end and a housing slidably reciprocable on the plunger above the fixed joint. Centering members are angularly displaced around the lower portion of the plunger with exterior surfaces parallel to and equidistant from the longitudinal axis of the plunger. Each of the centering members is connected by a scissor to the fixed joint and to the slidable housing so that as the plunger is moved upwardly or downwardly on the housing the members are extended or retracted in parallel or equidistant relationship to the plunger. A swivel housing mounted on the reciprocable housing rotates about the plunger and the grinder is connected for rotation with the swivel housing. The reciprocable housing contains a mechanism which, in a first mode of operation, permits the plunger to be pushed or pulled within the reciprocable housing so that the centering members may be rapidly retracted or extended and, in a second mode of operation, threadedly engages the plunger to permit the plunger to be rotated within the reciprocable housing to slowly retract or extend the centering members. In one preferred embodiment, the mount includes a spring tension assembly which permits adjustment of the pressure of the grinding surface against the pipe end.
REFERENCES:
patent: 1823959 (1929-08-01), Steinmayer
patent: 2414731 (1947-01-01), Forbes, Jr.
patent: 2501893 (1950-03-01), Dudley
patent: 2587398 (1952-02-01), Smith
patent: 2615413 (1952-10-01), Adams et al.
patent: 2931146 (1960-04-01), Handwerk et al.
patent: 3030903 (1962-04-01), Morris
patent: 3067651 (1962-12-01), Hogden et al.
patent: 3330021 (1967-07-01), Jacobsen
patent: 3601387 (1971-08-01), Pavlich
patent: 4304398 (1981-12-01), Crowell
patent: 4934109 (1990-06-01), Allred
Marlott John A.
Mathey International, Ltd.
Rachuba M.
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