LOWER-BACK SUPPORTING STRUCTURE FOR A BED OR A CHAIR
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United States of America Patent
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-
N/A
Issued Date -
May 5, 2011
app pub date -
Nov 2, 2009
filing date -
Nov 2, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A lower-back supporting structure for a bed or a chair includes a sliding base, two scissor lifts, a driver and a supporting member. The sliding base has a pair of slide slots and a pair of rotating pins, a securing portion between the two rotating pins, and a plurality of the locking apertures. Two scissor lifts both have an X-shaped frame having a pivot. A driver has a positioning end, an extendable rod, a through hole and a sliding rod placed through the slide slot, the through hole and the first front cotter holes. A supporting member has a pair of slide tracks and a pair of rotating holes. The driver drives the sliding rod along the slide slot of the sliding base to shorten the extendable rod, the scissor lifts rotate around the pivots to lift such that the supporting member is pushed away from the sliding base.
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