Precision adaptive powder dispenser

Details Precision adaptive powder dispenser Precision adaptive powder dispenser

2005-03-29

2005-03-29

Kaufman, Joseph A. (Department: 3754)

Dispensing

Processes of dispensing

C222S152000, C222S354000, C222S366000, C222S399000

Reexamination Certificate

active

06871758

ABSTRACT:
A powder dispenser includes: a dispenser housing having including a hopper for holding a powder; an outlet tube; a slider slidably mounted with respect to the dispenser housing between a feed position and a dispense position, the slider including a holding member for receiving powder supplied through a dispensing opening of the hopper in the feed position, the holding member having pores which permit gas passage therethrough but which prevent powder passage therethrough, and a vacuum passage for removing gas trapped by the powder in the holding member, through the holding member wall; an angled bore for supplying a pressurized gas at an angle to the hopper to provide a swirling effect; and a gas supply bore in the dispenser housing for supplying a pressurized gas to the receptacle portion in the dispense position to force the powder from the receptacle portion to the outlet tube.

REFERENCES:
patent: 4131219 (1978-12-01), Hind et al.
patent: 5183507 (1993-02-01), Scherer
patent: 5293757 (1994-03-01), Nishio
patent: 5706742 (1998-01-01), Hamrick
patent: 6024258 (2000-02-01), D'Alterio
patent: 6111206 (2000-08-01), Maguire
patent: 6450371 (2002-09-01), Sherman et al.

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