Hoppers with directionally applied relative motion to promote so

Details Hoppers with directionally applied relative motion to promote so Hoppers with directionally applied relative motion to promote so

1997-11-03

2000-07-11

Keenan, James W.

Material or article handling

Static receptacle and means for charging or discharging, or...

B65G 6540

Patent

active

060863072

ABSTRACT:
An improvement to a hopper to promote the flow of solid particulate material includes mounting one or more walls of the hopper for limited oscillatory motion in a direction parallel to the wall and perpendicular to the desired flow direction, and then providing an actuator connected to the remainder of the hopper to impart such motion to the wall. The relative motion between the moving wall and the particulate material effectively rotates the friction force to the direction of relative motion, leaving the friction in the desired flow direction approaching zero. As a result, downward flow can occur on walls that are only shallowly inclined. The improvement is applicable to hopper-like structures in railroad cars and ships, where it facilitates discharge onto moving conveyors.

REFERENCES:
patent: 833761 (1906-10-01), Stevens
patent: 3747811 (1973-07-01), Lewis et al.
patent: 4068768 (1978-01-01), Hicks, Jr.
patent: 4775284 (1988-10-01), Musschoot
patent: 4999021 (1991-03-01), Reissmann

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