Back Adjusting and Positioning Structure of Chair
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United States of America Patent
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Issued Date -
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app pub date -
May 18, 2016
filing date -
Mar 28, 2016
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A back adjusting and positioning structure of a chair is characterized in that: a backward tilt adjustment unit is disposed at the junction of a cushion frame and a back frame of the chair so that the backward tilt adjustment unit drives a screw segment with one end thereof extending inward to retract and/or protrude a blocking element coupled to a rear segment thereof in response to a knob's rotating in a predetermined direction, so as to control compression and/or expansion of a predetermined stop distance acquired by a spring fitted in the backward tilt adjustment unit, and in consequence the back in operation attains the required tightening and/or loosening state.
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Family
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Cited Art Landscape
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