Dispensing – With flow controller or closure – With interior material guide or restrictor
Patent
1978-03-28
1979-01-30
Scherbel, David A.
Dispensing
With flow controller or closure
With interior material guide or restrictor
214 17A, 222506, 222564, B65G 6570
Patent
active
041368045
ABSTRACT:
A gravity motivated hopper with the capacity to alleviate arching of granular material contained in the hopper. The hopper has a lower section defining a flow path which is vertically oriented with vertically decreasing horizontal cross-sectional areas leading to a bottom opening. In the proximity of the bottom opening is a first gate mechanism. The first gate is located below the critical arching cross-sectional flow area of the granular material, and functions to restrain the material during charging of the hopper and hopper transport, or permit flow of the material from the hopper during hopper discharge. Placed above the bottom gate is a second gate mechanism. The second gate is placed above the critical arching cross-sectional flow area for the particular granulated material. The second gate allows a certain volume of granular material to pass through during charging of the hopper while supporting the remaining portion of the granular material to deprive the granular material of arching condition during hopper charge and transport. The second gate will further permit unobstructed hopper discharge of the granular material.
REFERENCES:
patent: RE29385 (1977-09-01), Mitsitz
patent: 3682339 (1972-08-01), Knappstein
patent: 3901419 (1975-08-01), Szendroi
patent: 4060183 (1977-11-01), Puurunen
patent: 4066107 (1978-01-01), Karp et al.
Bartlebaugh Harry R.
Kinzler Raymond C.
Brumback Oscar B.
Koppers Company Inc.
Scherbel David A.
Zeh, Jr. Herbert J.
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