Fire escape – ladder – or scaffold – Scaffold external of shaft
Patent
1992-09-28
1993-12-14
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Scaffold external of shaft
182 92, A01M 3100
Patent
active
052693953
ABSTRACT:
A portable, tree mounted seat assembly includes a substantially rigid mounting bar embedded into a tree, a substantially rigid seat supporting frame removably secured to the mounting bar, and a seat mounted to swivel on the seat supporting frame. The mounting bar includes two 90 degree bends to form an anchoring segment embedded into the tree, a vertical medial segment and a horizontal handle segment. An elongate receiving sleeve is fixed to the medial segment, vertically disposed, and open at least at the top to receive an elongate coupling sleeve of the supporting frame for a nesting engagement with the receiving sleeve. The handle segment underlies the receiving sleeve, to support the coupling sleeve by gravity when the coupling sleeve is nested within the receiving sleeve. A seat is pivotally mounted to a distal region of the supporting frame. A rod, permanently fixed to the distal region, is insertable into the receiving sleeve, whereby the supporting frame can be used as a tool for installing or removing the mounting bar.
REFERENCES:
patent: 601849 (1898-04-01), Acker
patent: 614177 (1898-11-01), McBride
patent: 3298459 (1967-11-01), Bergsten
patent: 4819763 (1989-04-01), Groft
Lenz James A.
Lenz Sue A.
Lyzhoft Roger R.
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