Powder feed pump and appropriate operating system

Details Powder feed pump and appropriate operating system Powder feed pump and appropriate operating system

2004-09-23

2008-12-16

Hess, Douglas A (Department: 3651)

Conveyors: fluid current

Slug conveying

C406S145000

Reexamination Certificate

active

07465130

ABSTRACT:
An operating system for a power feed pump and a power feed pump having a transfer chamber with an inlet and an outlet. The outlet of the transfer chamber is closed, the inlet of the transfer chamber is opened, and a negative pressure is generated in the transfer chamber to suck a powder in through the inlet to the transfer chamber. The inlet of the transfer chamber is closed, the outlet of the transfer chamber is opened, and the powder in the transfer chamber is delivered through the outlet. The negative pressure in the transfer chamber is built up at least partially before the inlet of the transfer chamber is opened.

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