Fire escape – ladder – or scaffold – Scaffold external of shaft
Patent
1989-03-20
1990-03-06
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Scaffold external of shaft
182116, 182178, A01M 3102
Patent
active
049057928
ABSTRACT:
An improved tree fastener for a deer stand has adjustable tree clamping purchase provided by a pair of fork members forming a V-shaped throat for engaging the trunk of an adjacent tree and a continuously adjustable bolt and nut hooked into a tightening relation with a flexible band such as a link chain. The fastener is mounted on the seat module of a light weight modular ladder assembly of sufficient portability to be readily carried into a wooded hunting locale.
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patent: 1952863 (1934-03-01), Halker
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patent: 4552247 (1985-11-01), Purdy
patent: 4579198 (1986-04-01), Lee
patent: 4730669 (1928-03-01), Threllkeld
patent: 4819763 (1989-04-01), Grote
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