Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1988-02-25
1990-01-16
Schmidt, Frederick R.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51170T, 51170PT, 51358, 51401, B24B 2300
Patent
active
048934364
ABSTRACT:
A back up pad of felted polyurethane foam for use on a vibrating or oscillating sanding device that both efficiently transfers driving forces between the surfaces of the pad to drive a sheet of coated abrasive adhered to its outer surface against a workpiece, and restricts chattering and bouncing of the sanding device on the workpiece.
REFERENCES:
patent: 3025200 (1962-03-01), Powers
patent: 3924362 (1975-12-01), McAleer
patent: 4671019 (1987-06-01), Hutchins
Huebsch William L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Rachuba Maurina
Schmidt Frederick R.
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