Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1981-01-28
1982-10-26
Parker, Roscoe V.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
15387, 51273, B24B 5506, B24B 2300
Patent
active
043554873
ABSTRACT:
An air-powered sander is made up of a housing with a compressed air motor within it and designed for driving a sanding pad. The sander has a system for clearing dust, produced on sanding, from the pad. This system is made up of an impellor wheel freely turning on a motor shaft in the housing. On the two sides of the impellor wheel two groups of blades are present. A nozzle, joined with the airway for supplying the motor with compressed air, is used for directing at least one air jet against one group of the blades on the wheel. The other group of blades, on the other side of the wheel, is designed for producing a dust/air current for clearing sanding dust from the pad. For this purpose a dust take-up space is present extending from the pad to a position near inner ends of the second group of blades on the impellor wheel. There is furthermore a dust output airway extending from outer ends of the blades of the second group to a point at which the dust is forced out of the housing by way of an air current as produced by the impellor wheel.
REFERENCES:
patent: 2143970 (1939-01-01), Blood
patent: 3824745 (1974-07-01), Hutchins
Maier Peter
Tschacher Dieter
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