Material or article handling – Self-loading or unloading vehicles – Conveyor
Patent
1977-07-26
1979-07-31
Makay, Albert J.
Material or article handling
Self-loading or unloading vehicles
Conveyor
414521, B60P 100
Patent
active
041627350
ABSTRACT:
A truck or trailer body is equipped with a self-loading/unloading apparatus including a power-driven, flexible belt and a movable bulkhead. The belt covers the floor of the body from front to rear and is drivable fore and aft so as to provide a movable cargo supporting bed while the bulkhead is also movable fore and aft by means of a lost motion coupling between the belt and bulkhead that includes a belt-carried drive bar which depending on the direction of belt travel alternately moves into contact with spaced apart catch surfaces provided on a support frame for the bulkhead. A parallel motion mechanism is carried on the bulkhead support frame for maintaining the bulkhead parallel to the drive bar and thus in alignment with the belt and bed so that the bulkhead does not tend to cock and thereby bind along the sidewalls. Additionally, pneumatically actuated clamps are provided along the lateral margins of the belt for clamping the belt to the body when the belt is stationary and is not being used for loading or unloading, so as to form seals between the upper marginal surfaces of the belt and the sidewalls to keep the edges and under surfaces of the belt free of abrasive particles, and so as to prevent fraying of the belt edges due to flapping of the belt which may otherwise occur under certain conditions.
REFERENCES:
patent: 2979177 (1961-04-01), Sullivan
patent: 3498482 (1970-03-01), Lewis
patent: 3612316 (1971-10-01), Baldwin et al.
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