Ladder Chair
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United States of America Patent
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N/A
Issued Date -
Feb 3, 2011
app pub date -
Jul 30, 2009
filing date -
Jul 30, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A ladder chair comprises a retaining unit disposed in a first step plate, and the retaining unit includes a knob, a spring, and a fastening piece; wherein the fastening piece is inserted in a notch and a recess of the first step plate, and one end of the fastening piece is connected with the knob, and the other end thereof engages with the first rear pivot of the first step plate by using a U-shaped hook; the knob is inserted in a cutout and extends out of the first step plate. Therefore, no matter the ladder chair is in expanding or retracting state, the ladder chair is locked securely as the knob is not pressed to obtain safety.
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Family
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Cited Art Landscape
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