Flexible tilt adjustment device for a chair back
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United States of America Patent
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-
Aug 16, 2016
Grant Date -
Oct 15, 2015
app pub date -
Apr 9, 2014
filing date -
Apr 9, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The adjustment device includes a seat connected to a back by a first rod and an elasticity set. The elasticity has a base connected to the first rod. A pressing rod is connected to the base. A first spring is passed through by the pressing rod and stopped by the base. A pushing block is connected to the pressing rod and the first spring. A rotating rod passes through the seat. Two pressing blocks with a threaded hole are passed by the rotating rod and separately screwed with the rotating rod. Two second springs are passed through by the rotating rod and nipped between the pressing blocks and the edge plates.
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Family
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