Mass flow hopper and method of manufacture

Details Mass flow hopper and method of manufacture Mass flow hopper and method of manufacture

2005-12-06

2005-12-06

Dillon, Jr., Joe (Department: 3651)

Conveyors, chutes, skids, guides, and ways

Chutes

C052S197000, C414S295000

Reexamination Certificate

active

06971495

ABSTRACT:
A method for forming a hopper in a storage structure includes mounting a form to a storage structure which bounds a compartment. The form can be flexible or rigid. A layer of cementitious material is applied over an exterior surface of the form so as to produce a rigid side wall. The rigid side wall has an interior surface bounding a progressively constricting flow channel that communicates with the compartment of the storage structure. In one embodiment, the layer of cementitious material is applied by spraying.

REFERENCES:
patent: 2155587 (1939-04-01), Fairbank
patent: 3071297 (1963-01-01), Lee
patent: 3622656 (1971-11-01), Dewey et al.
patent: 4125970 (1978-11-01), Vidal
patent: 4282988 (1981-08-01), Hulbert, Jr.
patent: 5782524 (1998-07-01), Heider et al.
patent: 6055781 (2000-05-01), Johanson

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