Device for conveying powders through pipelines

Conveyors: fluid current – Blower or pump having load intake opening in housing – Having separate opening in housing for conveying fluid input

Reexamination Certificate

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Details

C406S091000, C406S109000, C406S123000, C406S153000

Reexamination Certificate

active

07410329

ABSTRACT:
A device for conveying powders through pipelines including at least one pumping device which in turn includes a suction inlet and a delivery outlet and a tubular chamber with opposite ends connected respectively to the suction inlet through an input valve and to the delivery outlet through an output valve. A vacuum source and a pressure source are connected upon command to the chamber in axially distanced positions to create a vacuum respectively and alternatively in the chamber in relation to the environment upstream of the device and a pressure in relation to the environment downstream of the device.

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Patent Abstracts of Japan, vol. 1997, No. 7, Jul. 31, 1997 & JP09071325A (Ogawa Kazutoshi).

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