Ice blasting apparatus

Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof

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Details

51320, 51322, B24C 300

Patent

active

052037940

ABSTRACT:
A system (10) for delivering a cold particulate material (14) has a closed storage hopper (12) for the material, the hopper having a bottom hopper outlet (16); a venturi feeder (22) having a material inlet (20) for feeding the material, a material conduit (26) to a remote nozzle (30), and a gas inlet (24); a hopper passage (18) connecting the hopper outlet to the feeder material inlet; a gas feed valve (33), the gas feed valve being openable in response to a feed signal (40) for activating the feeder and a blast conduit to the nozzle; a heater (50) in the blast conduit for limiting cooling of a workpiece without adversely heating the material; and a comminutor (52) in the material line proximate the nozzle for delivery of the material at reduced particle size to the nozzle for increased blasting effectiveness.

REFERENCES:
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patent: 4033736 (1977-07-01), Cann
patent: 4038786 (1977-08-01), Fong
patent: 4325720 (1982-04-01), Students
patent: 4389820 (1983-06-01), Fong et al.
patent: 4415346 (1983-11-01), Love
patent: 4799831 (1989-01-01), Ariaz
patent: 4947592 (1990-08-01), Lloyd et al.
patent: 4965968 (1990-10-01), Kelsall
patent: 5009240 (1991-04-01), Levi
patent: 5025597 (1991-06-01), Tada et al.
patent: 5074083 (1991-12-01), Kanno et al.
Watlow, Inc. catalog; pp. 228 and 229; St. Louis, Mo.; no date.
"All problems are not alike" ad; Koch Engineering Company Inc., Wichita, Kans.; 1 p.; Apr. 1991.

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