Fire escape – ladder – or scaffold – Scaffold external of shaft
Patent
1990-05-21
1991-04-23
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Scaffold external of shaft
108152, A01M 3102
Patent
active
050092855
ABSTRACT:
A hunter's tree stand and backpack frame is formed by a seat frame having a seat and having cam members at the end of the seat disposed adjacent a tree or upright.
The seat frame having a chain stop adjacent each side of the seat for supporting the seat at a selected elevation by the cams binding the tree between the cams and a first chain surrounding the tree.
Downwardly projecting legs secured to the seat are provided with tree engaging prongs for maintaining the seat in a preferably horizontal position, normal to the tree axis. A turnbuckle secured with the seat frame engages a second chain extended around the tree below the cams and first chain to secure the depending portion of the frame to the tree.
REFERENCES:
patent: 4411335 (1983-10-01), Forrester
patent: 4475627 (1984-10-01), Eastridge
patent: 4582165 (1986-04-01), Catini
patent: 4582165 (1986-04-01), Latini
patent: 4600081 (1986-07-01), Wade
patent: 4667773 (1987-05-01), Davis
Chin-Shue Alvin C.
Rhea Robert K.
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