Fire escape – ladder – or scaffold – Scaffold external of shaft
Reexamination Certificate
2005-03-15
2005-03-15
Thompson, II, Hugh B. (Department: 3634)
Fire escape, ladder, or scaffold
Scaffold external of shaft
C182S135000, C108S152000
Reexamination Certificate
active
06866120
ABSTRACT:
A portable tree stand for use with non-vertical trees provides standing and seating platforms that may remain parallel and may be adjustable. Adjustments include a slidable seat platform and a slidable standing platform that may be extended to allow adequate seating and standing space to compensate for tree trunks that diverge from the vertical. Additionally, the distance, or height, between the standing platform and the seating platform maybe varied. A threaded chain tensioner tightens a chain around the tree helping hold the stand to the tree, and optionally a tree screw secures attachment to the tree trunk. An adjustable seat support post establishes a parallelogram relationship between the seat platform and the standing platform such that an angular relationship, which may be parallel or non-parallel, may be maintained between the seat platform and the standing platform.
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Dawsey David J.
Gallagher Michael J.
Gallagher and Dawsey Co., LPA
Thompson II Hugh B.
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