Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1977-11-28
1979-11-20
Whitehead, Harold D.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
B24C 506
Patent
active
041745930
ABSTRACT:
An abrasive blasting apparatus comprising: supply means for supplying abrasive particles, and a rotatable impeller for blasting the abrasive particles supplied from this abrasive supply means onto a workpiece, the impeller having a plurality of vanes arranged in mutually spaced relationship around a rotation axis of the impeller, each of the vanes having a surface containing a first axis inclined with an angle of 25.degree.-65.degree. relative to said rotation axis and a second axis inclined with an angle of 40.degree.-80.degree. relative to an axis perpendicular to said rotation axis, each of the vanes having a first end edge and a first side edge which are located close to said rotation axis and also a second end edge and a second side edge which both face said first end edge and said first side edge, respectively, and also having a third edge positioned between said first end edge and said first side edge and crossing these first end and side edges, the crossing point of said first end edge and said second side edge being either in agreement with the cross point of said third edge and said first end edge or located between a crossing point of said first end edge and said third edge and a crossing point of said first side edge and said third edge relative to said rotation axis, said supply means supplying the abrasive particles from said thrid edge onto said surface which is arranged to have either a flat plane, a plurality of planes or a single curved surface.
REFERENCES:
patent: 3034262 (1962-05-01), Pawlson
patent: 3872624 (1975-03-01), Ramaswamy
patent: 3916568 (1975-11-01), Rose et al.
patent: 3977128 (1976-08-01), Goff
Olszewski Robert P.
Whitehead Harold D.
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