Apparatus for automatically sealing an articulated chute

Details Apparatus for automatically sealing an articulated chute Apparatus for automatically sealing an articulated chute

1997-01-17

1999-07-27

Bidwell, James R.

Conveyors, chutes, skids, guides, and ways

Chutes

Unloading

366 68, B65G 1100

Patent

active

059274611

ABSTRACT:
A mechanical device for automatically positioning a closure plate for sealing the opening created by the folding of adjacent segments of an articulated chute to thereby prevent undesired discharge or leakage from the chute is provided. The device, which is particularly useful on cement trucks, includes a closure plate rotatably connected to one segment of the chute and disposed to articulate upon an adjacent segment of the chute so that the closure plate seals the opening when the chute is in a folded configuration and, when the segments are unfolded to deliver a charge, rotates to a position clear of the discharge path. The device also includes means for sealably biasing the closure plate toward the opening when the segments are folded and for biasing the closure plate away from the discharge path when the segments are in an unfolded position.

REFERENCES:
patent: 3068981 (1962-12-01), Stegmeier et al.
patent: 5186299 (1993-02-01), Stimson
patent: 5354128 (1994-10-01), Lewis
patent: 5605398 (1997-02-01), Cronquist

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