Telescoping rigid frame and scissor conveyor

Conveyors: power-driven – Conveyor section – Endless conveyor

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B65G 2114

Patent

active

054905923

ABSTRACT:
Telescoping rigid frame/scissor conveyors. Such conveyors are formed of a plurality of telescoping frame segments which may be positioned at any number of desired nested/unnested configurations. The frame segments bear a lazy tong or scissors conveyor structure which assures uniform roller spacing, and rollers positioned at one height along the conveyor rather than at different heights for each frame segment. Counterintuitively, the increased structural complexity is more than outweighed by the benefits resulting from the uniformly positioned rollers of a uniform height, which are thus adapted to convey articles in a reliable and jam-free fashion unlike previous expandable rigid frame conveyors. Conveyors according to the present invention may contain automatic locks to prevent overextension, powered rollers and motive devices for automatic and reliable extension and retraction.

REFERENCES:
patent: 2576217 (1951-11-01), Eggleston
patent: 2815849 (1957-12-01), Zumbrunnen
patent: 2826290 (1958-03-01), Barski
patent: 3294216 (1966-12-01), Girardi
patent: 3596785 (1971-08-01), Weatherford
patent: 4260053 (1981-04-01), Onodera
patent: 4852712 (1989-08-01), Best
patent: 5224584 (1993-07-01), Best et al.

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