Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1979-12-17
1982-02-09
Smith, Gary L.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
B24C 332
Patent
active
043144276
ABSTRACT:
Apparatus adapted to move longitudinally through a pipe section and comprising a rotatable head member for impinging sand, grit, or other abrasive materials against the inner periphery of the pipe at a high pressure for cleaning thereof, and including a conduit for directing the sand into the interior of the rotatable head in a manner substantially precluding the leakage of the sand from the apparatus prior to discharge thereof from the rotating head.
REFERENCES:
patent: 2358557 (1944-09-01), Boyd
patent: 3071107 (1963-01-01), Stanley
patent: 3902276 (1975-09-01), Jarvis
patent: 4064293 (1977-12-01), Nicklas
patent: 4181092 (1980-01-01), Johnson
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