Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1977-02-10
1979-01-02
Smith, Gary L.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51429, B24C 306
Patent
active
041320395
ABSTRACT:
A lightweight hand operated abrasive blasting apparatus operatively connected with a remote station arranged to provide an air stream with a particulate abrasive material, and an air suction, the apparatus having a housing with an open side facing a work surface that is to be blasted. The abrasive, such as steel grit, is carried to the center of an impeller wheel which centrifugally projects the abrasive in the form of a transversely elongated stream against the work surface, and a vacuum line connected with the housing draws the spent abrasive particles along with particles of material removed from the surface and delivers the material to the remote station for separation and reclaiming of the abrasive particles. A resilient skirt extending from the housing provides a sealed connection with the work surface, and is provided with air flow openings which are normally closed by resilient valving flaps which are automatically operable in response to variations in the suction pressure within the housing, to control the admission of outside air into the housing in sufficient amounts to enable movement of the housing over the work surface. Adjustable ball thrust members support the housing for movement over the work surface. The abrasive stream is adjustably rotatable about its axis to vary its orientation on the blasted surface and permit the width of the blast area to be varied between a predetermined minimum and maximum, when the housing is moved in a predetermined direction.
REFERENCES:
patent: 2732666 (1956-01-01), Powell
patent: 3566543 (1971-03-01), Fogle
patent: 3777440 (1973-12-01), Yamanoto
patent: 3872625 (1975-03-01), Fuma
patent: 3916568 (1975-11-01), Rose
patent: 3918209 (1975-11-01), Crawley
patent: 4020597 (1977-05-01), Shigyo
Gilbert Neal J.
Horton Edward L.
Enviro-Blast International
Smith Gary L.
Weilein Paul A.
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