Fire escape – ladder – or scaffold – Scaffold external of shaft
Reexamination Certificate
2007-07-24
2007-07-24
Chin-Shue, Alvin (Department: 3634)
Fire escape, ladder, or scaffold
Scaffold external of shaft
Reexamination Certificate
active
10940254
ABSTRACT:
A tree stand for hunting includes a frame constructed to stably engage a tree trunk in an elevated position, a seat pivoted to the frame, and a back support pivotally supported by a link mechanism to a telescoping upright of the frame above the seat. Vertical and angular adjustment of the back support allows the hunter to adjust the back support for optimal ergonomic lumbar support and for user preference. Further, the back support and seat can be pivotally adjusted to provide a partial-standing perched position for the hunter. Also, the tree stand can be folded flat for storage and transport.
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Chin-Shue Alvin
Price Heneveld Cooper DeWitt & Litton LLP
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