Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1976-12-29
1979-04-17
Smith, Gary L.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51429, 51439, 114222, B24C 306
Patent
active
041493451
ABSTRACT:
The wall blaster of this invention comprises a plurality of sand injection nozzles so disposed as to be directed toward an opening of a blaster housing at the front surface facing opposite to a hull surface of a vessel to be treated for injecting working sand toward the hull surface, a working sand collecting chamber provided at the lower portion of the blaster housing for collecting the working sand injected from the injection nozzles and reflected from the hull surface to be treated, a plurality of compressed air injection tubes so disposed in the vicinity of the bases of the respective injection nozzles as to direct the head of the tube toward the base of the nozzle and also to open one end of a sand hose communicating with the collecting chamber in the vicinity thereof for taking up the sand in the collecting chamber by means of an ejector action of high speed jet air flow injected therefrom and for injecting again the sand from the injection nozzles to circulate the sand in the housing, upper and lower wheels provided at the front surface of the housing, and a permanent magnet disposed at the front surface of the housing, wherein the housing is arranged adjacent over the hull surface to be treated so as to move along the hull surface while injecting the working sand from the injection nozzles.
REFERENCES:
patent: 1819331 (1931-08-01), Lytle
patent: 2729918 (1956-01-01), Denburgh
patent: 3032929 (1962-05-01), Glesener
patent: 3900968 (1975-08-01), Shigyo
patent: 3916568 (1975-11-01), Rose
patent: 4036437 (1977-07-01), Dreher
Atsuchi Tekko Co., Ltd.
Smith Gary L.
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