Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1992-07-15
1993-07-20
Parker, Roscoe V.
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
51170R, 51169, B24B 5506
Patent
active
052282449
ABSTRACT:
A pneumatic tool includes: a grip portion, a tool body having a rotor rotatably mounted in a rotor chamber of the tool body as driven by a compressed air source flowing through an inlet passage in the grip portion, a tool unit secured to a lower end of a shaft of the rotor encased within a hood secured to the tool body, a Venturi tube portion formed in a side portion of the tool body for directing an exhaust air stream from the rotor chamber to a throat of the Venturi tube portion for drafting and removing dust in the hood as produced when operating the tool unit, and a turbo-exhauster secured to an upper end of the shaft of the rotor for sucking a dust-containing exhaust air stream from the Venturi tube portion to an outlet passage in the grip portion for synergetically drafting the exhaust air stream for efficiently removing the dust and also for balanceably operating the pneumatic tool.
REFERENCES:
patent: 3824745 (1974-07-01), Hutchins
patent: 4051880 (1977-10-01), Hestily
patent: 4302910 (1981-12-01), Tschacher
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