Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1985-08-19
1987-08-04
Olszewski, Robert P.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51378, 51389, B24D 1314, B24D 1320
Patent
active
046836837
ABSTRACT:
A disc may have a backing member or sheet and an abrasive sheet, each with first and second opposed faces. The first face of the abrasive sheet may be attached to the second face of the backing sheet and the second face of the abrasive sheet may be provided with abrasive particles. Alternatively, the sheets may be integrated into a single member. A staple is attached to the sheets and is provided with body and end portions. The body portion of the staple extends along the first surface of the abrasive sheet and the end portions of the staple extend through the sheets. The end portions are turned inwardly against the second surface of the backing sheet. In one embodiment, the sheets have a central opening and the end portions of the staple abut the second surface of the backing sheet. A holder detains the body portion of the staple. In another embodiment, the end portions of the staple define a looped relationship with the second surface of the backing sheet and the holder cooperates with such looped relationships to detain the disc. The detention by the holder may be provided at the periphery of the holder or at positions within the holder. The holder and the disc may be associated with a camming member and with a reinforcing plate. The camming member and the reinforcing plate cooperate with each other and with the holder to insure that the holder and the disc can be easily removed from the camming member and the reinforcing plate even when the holder has become jammed against the reinforcing plate by the application of a force by a workpiece against the disc.
REFERENCES:
patent: 1724742 (1929-08-01), Albertson et al.
patent: 3157010 (1964-11-01), Block
patent: 3266200 (1966-08-01), Block
patent: 3574978 (1971-04-01), Block
patent: 4245438 (1981-01-01), van Buren, Jr.
Olszewski Robert P.
Roston Ellsworth R.
Schwartz Charles H.
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