Fluent material handling – with receiver or receiver coacting mea – With testing or weighing receiver content
Reexamination Certificate
2007-03-20
2007-03-20
Douglas, Steven O. (Department: 3751)
Fluent material handling, with receiver or receiver coacting mea
With testing or weighing receiver content
C141S067000, C141S302000, C406S169000, C406S091000, C222S195000, C222S504000
Reexamination Certificate
active
11011672
ABSTRACT:
An apparatus (10) for handling bulk particulate material (M) includes a reservoir hopper (16) having a gas-permeable liner (42) and a gas inlet (44) connecting the reservoir hopper (16) to a pressurized flow of gas sufficient to fluidize the material (M). A transition and pipe assembly (18) receives a flow of material (M) from the reservoir hopper (16). The transition and pipe assembly (18) has an outer conduit (54), an inner conduit (52), and at least one gas inlet (64). The outer conduit (54) is substantially impervious to gas whereas the inner conduit (52) is permeable to gas. The inner conduit (52) is disposed within and surrounded by the outer conduit (54). The gas inlet (64) connects the outer conduit (54) to a pressurized flow of gas to fluidize the material (M) within the inner conduit (52). A variable orifice non-contact valve (24) controls the flow of material (M) from the transition and pipe assembly (18).
REFERENCES:
patent: 4659263 (1987-04-01), Hanrot et al.
patent: 6227768 (2001-05-01), Higuchi et al.
patent: 6609871 (2003-08-01), Pfeiffer et al.
Bragg Thomas M.
DeMaison Dale A.
Kelsey Jeffery P.
Poole Raymond G.
Douglas Steven O.
Eastman Kodak Company
Kessler Lawrence P.
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