Fire escape – ladder – or scaffold – Scaffold external of shaft
Patent
1985-08-15
1986-04-15
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Scaffold external of shaft
108135, 108152, A45F 326, A47C 910, A63B 2700
Patent
active
045821682
ABSTRACT:
A portable tree seat for hunters which includes a support arm which is pivotally attached to a tree clamp. The arm can be fixed in several rotatable positions with respect to the clamp. A seat is supported from a fork support which is adjustable along the arm at several positions for a horizontal position of the arm and at another position for a vertical position of the arm. The seat may be rotated with respect to the arm to several fixed positions.
REFERENCES:
patent: 2512174 (1950-06-01), Roeder
patent: 3949835 (1976-04-01), Butler
patent: 3990537 (1976-11-01), Swenson
patent: 4069891 (1978-01-01), McClung
patent: 4129198 (1978-12-01), Hunter
patent: 4150733 (1979-04-01), Plummer
patent: 4307672 (1981-12-01), Shikimi
patent: 4488620 (1984-12-01), Gibson
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