Powder transport method and apparatus

Details Powder transport method and apparatus Powder transport method and apparatus

2007-09-25

2007-09-25

Derakshani, Philippe (Department: 3754)

Material or article handling

Apparatus for moving material between zones having different...

C414S805000

Reexamination Certificate

active

10384381

ABSTRACT:
The present invention is directed to a powder paint delivery method and apparatus employing a pressurized reservoir pump that supplies a controlled stream of densely fluidized or dense phase powder paint to the applicator though a powder delivery conduit. The powder flow rate is a function of the pressure in the reservoir and the flow resistance from the reservoir to the applicator, and is therefore very stable over time, and simple to control. The powder flow can be controlled by holding the resistance of the powder flow path constant and varying the pressure in the reservoir, or by holding the reservoir pressure constant and varying the resistance of the powder flow path.

REFERENCES:
patent: 2151514 (1939-03-01), Heinen
patent: 2667280 (1954-01-01), Lane et al.
patent: 5800876 (1998-09-01), Borner
patent: 2005/0019106 (2005-01-01), Moser
patent: 2049491 (1980-04-01), None
1996 Powder Coating Advertisement for Sep. 17-19, 1996 Conference Proceedings.
Powder Coated Method of Power Delivery Control (pp. 183-195).
User's Guide to Powder Coating—Second Edition (pp. 68-70).
Ramseier Technologies (7 pages).
PCT—WO 03/024612 A1.
MAC Equipment—Dense Phase Conveying (2 pages).
Smoot—Dry Bulk Material Handling Systems—Dense Phase Conveying Concept (5 pages).
Smoot—Dry Bulk Material Handling Systems—Single Vessle Dense Phase Batch (5 pages).
European Search Report dated Mar. 2, 2005.

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