CHAIR TILT SYSTEM WITH LEAF SPRING
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United States of America Patent
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Issued Date -
Sep 26, 2024
app pub date -
Mar 22, 2024
filing date -
Mar 23, 2023
priority date (Note) -
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status (Latency Note)
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Abstract
A chair comprises a leaf spring for biasing a seat towards the substantially horizontal position and an adjustment mechanism comprises a front and rear support configured to adjust a force curve of the leaf spring. The front support to enable (a) the front end portion of the leaf spring to deflect upwardly for relieving at least a portion of an increase in a spring reaction force induced by downward movement of the rear support as the seat moves in the rearward tilting direction through a range of rearwardly tilted positions, and (b) the front support to deflect the front end portion of the leaf spring downwardly for restoring at least a portion of a decrease in the spring reaction force induced by upward movement of the rear support as the seat moves in the forward tilting direction through the range of rearward tilted positions.
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