Deep water powder feed hopper

Details Deep water powder feed hopper Deep water powder feed hopper

1998-07-10

1999-10-05

Paschall, Mark

Electric heating

Metal heating

By arc

21912145, 21912148, 239 85, 118308, B23K 1000

Patent

active

059618566

ABSTRACT:
A hopper feeds powder underwater to a welding torch. The hopper includes a housing having a lower chamber and an integral upper chamber. An inlet joins the upper chamber for receiving powder and a pressurized carrier gas. A powder outlet joins the lower chamber for discharging the powder to the torch. A gas outlet joins the upper chamber for releasing the carrier gas. And, a control valve joins the gas outlet for selectively controlling pressure internal the housing.

REFERENCES:
patent: 3839077 (1974-10-01), Robinson
patent: 4987001 (1991-01-01), Knobbe et al.
patent: 5690844 (1997-11-01), White et al.

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