Apparatus for and method of sand-blasting the inner walls of bor

Details Apparatus for and method of sand-blasting the inner walls of bor Apparatus for and method of sand-blasting the inner walls of bor

1996-02-07

1996-12-10

Meislin, D. S.

Abrading

Machine

Sandblast

451 38, 451102, B24C 332

Patent

active

055825370

ABSTRACT:
The invention provides an apparatus for sand-blasting the inner walls of bores, tubes, pipes and the like, comprising a housing with a first tube member for feeding blasting material and a second tube member for feeding pressurized air. The second tube member is provided with a curved end portion, the orifice thereof being located beyond the outlet opening of the first tube member. The second tube member, together with its end portion, is rotatable around the central longitudinal axis of the first tube member. Thus, the stream of blasting material escaping from the outlet of the first tube member is deflected and accelerated under the influence of the stream of pressurized air escaping from the curved end portion of the second tube member. Due to the provision of such a touchless deflection, the wear of the apparatus can be substantially reduced.

REFERENCES:
patent: 4380477 (1983-04-01), Saunders
patent: 4704826 (1987-11-01), Kirkland

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