Fire escape – ladder – or scaffold – Scaffold external of shaft
Patent
1990-07-31
1991-10-29
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Scaffold external of shaft
108152, A01M 3102
Patent
active
050607561
ABSTRACT:
A portable treestand for hunters includes a one piece supporting platform cast from a light weight metal, preferably aluminum. The unitary construction of the platform eliminates a large number of fabrication steps and the related fastening techniques and devices used therewith. As a result, the platform is stronger and more rigid, free of many potentially movable joints, and may be made with an irregular pattern. The grate-like pattern of irregular oepnings in the platform provides variable positioning support for different types of archery bows and enhances the ability to camouflage the treestand.
REFERENCES:
patent: 3749200 (1973-07-01), Meyer
patent: 3767011 (1973-10-01), Witt
patent: 4601364 (1986-07-01), York
patent: 4869520 (1989-09-01), Cole
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