Fire escape – ladder – or scaffold – Scaffold external of shaft
Patent
1991-12-05
1993-07-13
Chotkowski, Karen J.
Fire escape, ladder, or scaffold
Scaffold external of shaft
182134, A45F 300
Patent
active
052265056
ABSTRACT:
A climbing device for a tree or other vertical columnar member having one or two generally parallel platforms, each having either fixed or pivoting members on each side. The members may be in substantially the same plane as the platform, extend along the sides of the tree, and are joined together by a connecting member, so as to encircle the tree. The two members attached to the platform may form an acute angle which allows climbing a broader range of trees, especially larger trees. The connecting member may be lengthwise adjustable to compensate for variable spacing of the two side members and also provides the means for them to be joined together. The platform(s) is supported and braced underneath by several members which terminate together to engage the tree in compression by means of two curved arches, leaving the top of the platform(s) substantially free from obstructions.
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Woller John A.
Woller Ronald R.
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