Fluent material handling – with receiver or receiver coacting mea – Fluent charge impelled or fluid current conveyed into receiver
Reexamination Certificate
2005-09-27
2005-09-27
Douglas, Steven O. (Department: 3751)
Fluent material handling, with receiver or receiver coacting mea
Fluent charge impelled or fluid current conveyed into receiver
C141S256000, C222S413000
Reexamination Certificate
active
06948535
ABSTRACT:
The present invention is directed to an apparatus and method for accurately metering and conveying a dry powder or granular material to a blender in a substantially closed system. The apparatus includes a storage tank adapted to hold the dry powder or granular material, a hopper disposed inside of the storage tank; and a conveyor at least partially disposed inside of the storage tank, which delivers the dry powder or granular material to the hopper. The apparatus also includes a metering feeder adapted to deliver the dry powder or granular material at a substantially uniform density from the hopper to a blender located outside of the storage tank. The apparatus is a substantially closed system, thus minimizing the risk that the dry powder or granular material will become airborne.
REFERENCES:
patent: 1022305 (1912-04-01), Dean
patent: 2115464 (1938-04-01), Kirby
patent: 2517456 (1950-08-01), Wherrett
patent: 3792790 (1974-02-01), Brubaker
patent: 4490047 (1984-12-01), Stegemoeller et al.
patent: 4802141 (1989-01-01), Stegemoeller et al.
patent: 4850701 (1989-07-01), Stegemoeller et al.
patent: 4850750 (1989-07-01), Cogbill et al.
patent: 4854714 (1989-08-01), Davis et al.
patent: 4898473 (1990-02-01), Stegemoeller et al.
patent: 4900157 (1990-02-01), Stegemoeller et al.
patent: 4913554 (1990-04-01), Bragg et al.
patent: 4919540 (1990-04-01), Stegemoeller et al.
patent: 4991632 (1991-02-01), Nordmeyer et al.
patent: 5333762 (1994-08-01), Andrews
patent: 5452954 (1995-09-01), Handke et al.
patent: 5522459 (1996-06-01), Padgett et al.
patent: 5570743 (1996-11-01), Padgett et al.
patent: 5906471 (1999-05-01), Schwoerer
Prater Industries, Inc. brochure entitled “Rotary Airlock Feeders,” undated but admitted to be prior art.
Flexicon brochure entitled “Innovative approach to weigh/batch mixing Directly from bulk bags improves efficiency and workplace safety for a world leader in crop protection,” undated but admitted to be prior art.
Flexicon brochure entitled “Automated turnkey batching, blending, Extrusion system provides 18 month R.O.I.,” undated but admitted to be prior art.
Baker & Botts L.L.P.
Douglas Steven O.
Halliburton Energy Service,s Inc.
Wustenberg John W.
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