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US 5,927,461 AGranted
Apparatus for automatically sealing an articulated chute
AssigneeForfam Incorporated
InventorJohn W. Jamieson
Life of this patent
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AssigneeForfam Incorporated
InventorJohn W. Jamieson
Estimating the term…
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.
An articulated chute for concrete vehicles which automatically positions to prevent the accidental discharge of concrete comprising,
An articulated chute for concrete vehicles which automatically positions itself to prevent the accidental discharge of concrete having at least two segments comprising,
A method of providing an automatic chute mechanism for concrete vehicles to prevent the accidental discharge of concrete, said chute connected to said vehicle and including at least two segments rotatably connected including a main segment and a delivery segment, said delivery segment having a storage position and a delivery position, which form an opening with said main segment when said delivery segment is in said storage position and said segments forming a discharge path for flowable concrete material when said discharge segment is in the discharge position, the improvement which comprises:
Dependencies are inferred from the claim text.