Fire escape – ladder – or scaffold – Ladder and platform – Platform with ladder as support
Reexamination Certificate
2009-04-28
2011-10-25
Shue, Alvin Chin (Department: 3634)
Fire escape, ladder, or scaffold
Ladder and platform
Platform with ladder as support
C182S187000
Reexamination Certificate
active
08042652
ABSTRACT:
The tree stand has a lower rectangular platform with an extended opening from the center to an outer edge of the platform for installation around a tree trunk. An upper platform provides a secure seating area. A plurality of support members are pivotally attached to the lower surface of the lower rectangular platform and have teeth on their lower end adapted for securing into the bark of a tree. The tree stand is further secured to the tree by a plurality of angle irons that are mounted at the center of the upper and lower platforms. Adjustable tension straps attach to the angle iron and tighten the platforms to the tree preventing vertical movement of the tree stand. The support members on the lower platform have a hook on the lower end opposite the teeth, and an adjustable tension strap that engages the hooks further tightens the support members against the tree.
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Cardenas-Garcia Jaime F
Chin Shue Alvin
Litman Richard C.
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