Portable sand blasting device

Details Portable sand blasting device Portable sand blasting device

B - Operations, Transporting

24

C

51/5

B24C 3/06 (2006.01)

Patent

CA 1074120

PORTABLE SAND BLASTING DEVICE ABSTRACT OF DISCLOSURE 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 com- municating 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 con- figuration 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 dis- charge 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 there- above 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. -1-

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