Tension driven scissor lift
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United States of America Patent
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Aug 20, 2024
Grant Date -
Aug 31, 2023
app pub date -
May 5, 2023
filing date -
Mar 15, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A lift device includes a base, a platform that is repositionable relative to the base between a fully raised position and a fully lowered position, a scissor assembly coupling the base to the platform, and a booster. The scissor assembly includes a scissor layer including a first scissor arm pivotally coupled to a second scissor arm, a pulley coupled to the scissor layer, a tensile member wrapped around the pulley, and an actuator configured to vary a working length of the tensile member such that the first scissor arm rotates relative to the second scissor arm to move the platform relative to the base. A booster is positioned to engage a portion of the tensile member and apply an upward force on the scissor assembly when the platform is in the fully lowered position.
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