Conveyors: fluid current – Conduit – With wear protection means
Patent
1990-11-07
1992-09-08
Focarino, Margaret A.
Conveyors: fluid current
Conduit
With wear protection means
406122, B65G 5304
Patent
active
051452936
ABSTRACT:
A powder pickup device has a tube formed of an elastomeric tube wall with an orifice therein receptive of powder from a vessel so as to direct powder into a carrier gas in a central passage in the tube. A tubular shell supports the tube and has an aperture therein aligned with the orifice. In another embodiment the tube is combined of a rigid tube and an elastomeric tube fitted tandemly in the shell. The rigid tube extends to an inner end proximate the aperture and has the orifice situated therein. The elastomeric tube extends from the rigid tube and is disposed so as to place a section thereof opposite the orifice.
REFERENCES:
patent: 1246189 (1917-11-01), Vanderlip
patent: 2707132 (1955-04-01), Baresch
patent: 4561808 (1985-12-01), Spaulding et al.
patent: 4900199 (1990-02-01), Spaulding et al.
Goering Richard A.
Rotolico Anthony J.
Savino James J.
Spaulding Mark F.
Focarino Margaret A.
Grimes E. T.
Hoge Gary C.
Ingham H. S.
The Perkin-Elmer Corporation
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