Fire escape – ladder – or scaffold – Ladder with vertically moving platform or escape – Ladder supports platform
Patent
1999-10-06
2000-08-01
Chin-Shue, Alvin
Fire escape, ladder, or scaffold
Ladder with vertically moving platform or escape
Ladder supports platform
187261, 414921, 182148, B66D 100
Patent
active
060952849
ABSTRACT:
An elevatable stand construction 10 for physically challenged hunters which includes a ladder style main framework member 20 supported in an upwardly angled disposition, a chair style platform member 30 slidably disposed on the main framework member 20, and a mechanized unit 13 for moving the platform member 30 in an up and down fashion relative to the main framework member 20. The mechanized unit 13 may comprise a manual version 40 or a motorized version 50.
REFERENCES:
patent: 107225 (1870-09-01), Claflin
patent: 2714434 (1955-08-01), Peterson
patent: 3115211 (1963-12-01), Ostrander
patent: 3176794 (1965-04-01), Evans
patent: 3430734 (1969-03-01), Embree
patent: 3891062 (1975-06-01), Creneste
patent: 4565262 (1986-01-01), Hawkins
patent: 4862997 (1989-09-01), Eberle
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