Device for selectively coupling a movable load bearing unit to a

Details Device for selectively coupling a movable load bearing unit to a Device for selectively coupling a movable load bearing unit to a

1985-12-30

1987-01-27

Reeves, Robert B.

Railways

Traction

Chain

1041725, B61B 1004

Patent

active

046387404

ABSTRACT:
A device for selectively coupling a movable load bearing unit, such as a pallet, to a link chain conveyor flight so that the pallet will selectively be moved with the conveyor flight along a path defined by the conveyor flight. The coupling device includes a stem mounted to the pallet for longitudinal movement in a vertical direction and a flight engagement pin longitudinally aligned with and depending from the stem. The stem is sized and configured for insertion into one of the openings of the link chain. The pin is generally rectangular in transverse cross-section. In addition, the coupling device also has a generally planar plate extending generally perpendicularly from the pin in a direction upstream therefrom, relative to the direction of movement of the conveyor flight, and in a direction downstream therefrom, relative to the direction of movement of the conveyor flight. The plate is used to maintain directional stability to the pin as the pin moves into and out of engagement with the link chain conveyor flight. The depending end of the pin is formed with a ramp surface sloping downwardly in the direction of movement of the conveyor flight. The ramp surface provides a lead in angle for the pin as it is lowered to be inserted into one of the openings of the chain links of the conveyor flight as well as a clearance for the conveyor flight passing beneath the depending end of the pin when the pin is raised to be removed from one of the openings of the chain links of the conveyor flight.

REFERENCES:
patent: 1420115 (1922-06-01), Lange et al.
patent: 2576178 (1951-11-01), Hiles et al.
patent: 3478697 (1969-11-01), Bradt
patent: 3878793 (1975-04-01), Turner
patent: 4438702 (1984-03-01), Rhodes

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