Fire escape – ladder – or scaffold – Scaffold external of shaft
Patent
1977-12-09
1979-07-17
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Scaffold external of shaft
108 2, A47C 910
Patent
active
041612337
ABSTRACT:
A portable tree seat adapted for use with a tree or other generally vertical member is disclosed. The tree seat includes a mounting member or support bracket adapted to fit around the trunk of a tree and a seat platform. The seat platform is pivoted to the mounting member and includes a heat retaining cover on its upper surface to retain body heat. When weight is applied to the seat platform, the mounting member is torqued to a stable position.
REFERENCES:
patent: 523287 (1894-07-01), Kollenberg
patent: 1185404 (1916-05-01), Hughes et al.
patent: 2842300 (1958-07-01), Johnson
patent: 3340961 (1967-09-01), Provaznik
patent: 3990537 (1976-11-01), Swenson
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