Fire escape – ladder – or scaffold – Scaffold external of shaft
Patent
1993-12-10
1994-11-15
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Scaffold external of shaft
182188, 108152, A01M 3102
Patent
active
053639413
ABSTRACT:
An improvement in hunting tree stands which allows for the adaptation of such devices to trees or other support members which may not be truly vertical, thereby providing a level platform and/or seat arrangement irrespective of the orientation of the tree or support member. Leveling is accomplished by a telescopic arrangement attached to the standing platform thereby eliminating the need for ridged braces.
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patent: 5090506 (1992-02-01), Womack et al.
patent: 5143177 (1992-09-01), Smith
Chin-Shue Alvin C.
Montgomery Robert
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