Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1992-11-12
1993-06-15
Rose, Robert A.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51273, B24B 2302
Patent
active
052187900
ABSTRACT:
An improved pneumatically operated grinding tool having a debris removing device is primarily equipped with a main body, a pneumatic motor, a lower chamber, an upper and a lower debris intaking wheel, an air guiding disc, a cushion ring, a partition mount and a grinding plate. The grinding plate is provided with a plurality of through holes thereon so as to permit grinding debris to be sucked into the lower chamber therethrough and via the periphery thereof and further led into the lower debris intaking wheel and then the air guiding disc. The upper and lower debris intaking wheels assembled together with the air guiding disc disposed therebetween are both provided with a hexagon-shaped through hole respectively so as to permit the wheels to be fixedly secured in place onto a hexagonal shaft. The additional upper debris intaking wheel disposed on top of the air guiding disc can help introduce grinding debris delivered from the air guiding disc into an outlet and further to a debris outlet duct. The pneumatic motor received in the body drives the upper and lower debris intaking wheels together to generate large vacuum force whereby the grinding debris particles are continuously expelled without accumulating in the lower chamber and the main body even the intaking wheels run at low speed.
REFERENCES:
patent: 3824745 (1974-07-01), Hutchins
patent: 4355487 (1982-10-01), Maier et al.
patent: 4765099 (1988-08-01), Tanner
patent: 4930264 (1990-06-01), Huang
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