B - Operations – Transporting – 65 – G
Patent
B - Operations, Transporting
65
G
198/75
B65G 15/62 (2006.01) B60P 1/38 (2006.01) B60P 1/52 (2006.01) B65G 13/12 (2006.01) B65G 21/12 (2006.01)
Patent
CA 1247551
ABSTRACT OF THE DISCLOSURE Mechanical handling apparatus for moving a load over a support surface comprises an endless powered conveyor device which extends substantially over at least part of the length of the support and is trained round guide means or pulley means rotatable about substantially horizontal axes. The endless conveyor device comprises a chain having a working run and a return run the working run of which comprises at least two working parts, which are movable vertically independently or in unison. In the embodiment shown, each conveyor device in fact comprises two side-by-side chains. The endless chains run in a guide for the working run and a guide for the return run. The guides are mounted one on top of the other, the lower guide being of inverted channel section and the upper guide being of upwardly open channel section which rises and falls within outer channel on a support plate which is in contact with inflatable means such as an air bag in order to provide a smooth and uniform raising and lowering. Guides in the form of angles are secured to outer flanges of the outer channel limbs of the angles guiding the inner channel as it rises and falls when the air bag is inflated and deflated. Between the base or web of the inner channel and two chains is a plastic slide block which provides for slippage of the chains in the desired direction. The return run of the chains is supported on a runner plate secured to the vehicle floor within the lower channel, which is itself secured to the vehicle floor. The outer channel and the lower channel are secured together by welding, and the guide angles are secured to the limbs as by screws, to provide a rigid structure which is compact and houses the working and return runs of the chains.
506873
Bereskin & Parr
Hydraroll Limited
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