Lifter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Apr 10, 2018
Issued Date -
N/A
app pub date -
Aug 15, 2016
filing date -
Aug 17, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A lifter is provided with operating levers, which, against driving forces of actuators that switch the ratchet pawls to unengaged orientations, switch the ratchet pawls to engaged orientations of being engaged with ratchet gears, is provided with a link mechanism, which, when a workpiece support base is being lowered by collapsing motions of a pair of right and left crosslink mechanisms supporting the workpiece support base and a difference arises in movement amounts of movable support shafts at lower end sides of the respective crosslink mechanisms, converts the movement amount difference to an operating force of the operating lever at the larger movement amount side, and is such that by the operating lever at one side being driven by the link mechanism, the operating lever switches the ratchet pawl at the larger movement amount side to the engaged orientation.
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