Soda blasting apparatus

Details Soda blasting apparatus Soda blasting apparatus

2006-11-14

2006-11-14

Ackun, Jr., Jacob K. (Department: 3723)

Abrading

Machine

Sandblast

C451S091000, C451S099000

Reexamination Certificate

active

07134945

ABSTRACT:
The Soda Blasting Apparatus (1) disclosed and claimed herein introduces pressure into a pressure vessel (10). The blasting medium (70) is metered from the pressure vessel interior (13) by a pressure differential introduced by a venture (500) positioned at the pressure vessel interior (13) proximal the pressure vessel bottom (12) and in pressure communication with a pass through pipe (400). The pass through pipe (400) receives pressure proximal the pass through pipe top (440). The venturi (500) has a venturi aperture (590) having a venturi aperture ID D6 (585). The venturi aperture ID D6 (585) is less than the pass through pipe ID D7 (410). The venturi aperture (590) is in pressure communication with the pass through pipe aperture (410). The venturi pressure Pb (575) is less than the pass through pipe pressure Pa (480) as a result of the venturi effect between the pass through pipe (400) and the venturi (500). At the venturi outer surface, at least one venturi groove (530) is formed from the venturi top (510) to the venturi bottom (520). The venturi (500) is received into a medium outlet (600) which is fixed by pipe and thread means at the pressure vessel bottom (12) and which has a medium outlet ID D5 (650). The venturi diameter OD D3 (570) is approximately three thousandths inches less than the medium outlet ID D5 (650). The venturi (500) is in pressure communication with the medium outlet (600) and medium out elbow (700) which is in pressure communications with a hose and nozzle for the delivery of blasting medium to a surface.

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