Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1989-07-10
1990-10-23
Schmidt, Frederick R.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51273, 51392, B24B 2300, B24B 5506, B24B 1500
Patent
active
049642430
ABSTRACT:
A sanding device for working with gypsum board (sheetrock) and which may be coupled to a vacuum cleaner to reduce the dust problem created when sanding the joint cement. The sanding device comprises a sanding head having a generally rectangular planar base with a pattern of pedestals formed thereon for supporting the abrasive material. The base defines a vacuum plenum having ports therethrough for placing the channels between adjacent pedestals in fluid communication with the vacuum chamber. The head member is configured to attach by a universal joint to an elongated tubular pole whereby the workmen can manipulate the sanding head high on a wall or ceiling from a position on the floor. The vacuum cleaner is connectable to the free end of the pole and a suitable hose connection is made between the hollow interior of the tubular pole to the vacuum chamber of the sanding head.
REFERENCES:
patent: 3183638 (1985-05-01), Hutchins
patent: 3935678 (1976-02-01), Marton
patent: 4062152 (1977-12-01), Mehrer
patent: 4516361 (1985-05-01), Gringer
patent: 4697389 (1987-10-01), Romine
patent: 4759155 (1988-07-01), Shaw
patent: 4779385 (1988-10-01), Reiter
Schmidt Frederick R.
Watson Bruce P.
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