Conveyors: power-driven – Conveyor section – Pusher conveyor and separate load support surface
Patent
1993-03-25
1994-03-08
Gastineau, Cheryl L.
Conveyors: power-driven
Conveyor section
Pusher conveyor and separate load support surface
198778, B65G 3500
Patent
active
052919870
ABSTRACT:
A conveyor for raising or lowering articles thereon comprising a vertically disposed central column which is rotatable about a vertical axis and which has a plurality of radially spaced apart push bar assemblies mounted thereon. A spiral bed extends around the outer periphery of the rotating central column and is adapted to support the articles to be conveyed thereon. Each of the push bar assemblies has a freely movable endless chain provided thereon from which extend bars which rest upon the upper surface of the spiral bed and which move upwardly along the spiral bed as the central column is rotated in one direction and which move downwardly along the spiral bed when the central column is rotated in an opposite direction. Entry and exit conveyors are associated with the conveyor to supply articles to be conveyed thereto and for receiving the conveyed articles therefrom.
REFERENCES:
patent: 772078 (1904-10-01), Baker
patent: 1758994 (1930-05-01), Veomans
patent: 2628708 (1953-02-01), Wahl et al.
patent: 3295666 (1967-01-01), Kay et al.
patent: 3306432 (1967-02-01), Hoagland
patent: 3908333 (1925-09-01), Cavanna
patent: 4756403 (1988-07-01), Sasaki et al.
Gastineau Cheryl L.
Millard Manufacturing Corp.
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