Portable sand blasting device

Details Portable sand blasting device Portable sand blasting device

1976-06-17

1977-11-15

Smith, Al Lawrence

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51432, B21J 1300

Patent

active

040579387

ABSTRACT:
A portable sand blasting device comprising a housing adapted to be held and manipulated manually and to support an electric motor having a rotatable output shaft. An impeller is mounted on the motor output shaft and has an inlet opening communicating with an inlet chamber which receives air and entrained sand through a conduit extending to a sand pouch adapted to be carried on the body of the operator. The impeller also has a plurality of radial passageways each of a generally circular configuration but with a somewhat "V"-shaped trailing wall. A spiral discharge chamber receives the air and entrained sand from outer end of the impeller passageways and conducts the same to a discharge opening and an associated nozzle. The spiral discharge chamber has a "V"-shaped outer wall with the open end of the "V" facing the impeller. An annular series of small apertures in a housing member adjacent the impeller inlet chamber provides for the entry of additional ambient air and a rotatable disc thereabove has a similar annular series of apertures. The disc may be rotated to align and to misalign the apertures in varying degrees whereby to regulate air flow.

REFERENCES:
patent: 3491563 (1970-01-01), Alonso

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