Dispensing – With discharge assistant – Movable or conveyer-type trap chamber
Reexamination Certificate
2005-11-22
2005-11-22
Derakshani, Philippe (Department: 3754)
Dispensing
With discharge assistant
Movable or conveyer-type trap chamber
C414S219000
Reexamination Certificate
active
06966466
ABSTRACT:
A rotary airlock valve has a plurality of material receiving pockets having leading edges that are narrower than the trailing edges thereof, preferably having walls tapering inwardly so as to define a narrowed pocket opening for directing any material expansion due to pressurization to a center of a discharge outlet, to reduce wear and increase seal life.
REFERENCES:
patent: 3151784 (1964-10-01), Tailor
patent: 3195241 (1965-07-01), Hohne
patent: 5413256 (1995-05-01), Mitchell et al.
patent: 5538383 (1996-07-01), Ikeda et al.
patent: 5544995 (1996-08-01), Ogawa et al.
patent: 5575085 (1996-11-01), Groombridge
patent: 2003/0039515 (2003-02-01), Salley, Jr.
patent: 2 129 395 (1984-05-01), None
ASJ Holding APS
Coleman Henry
Derakshani Philippe
Sapone William J.
Sudol R. Neil
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