Fire escape – ladder – or scaffold – Pole or strand grasping-type climber – Foot- or leg-attachable
Patent
1994-10-24
1997-06-24
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Pole or strand grasping-type climber
Foot- or leg-attachable
182187, A01M 3102
Patent
active
056410360
ABSTRACT:
A hunter's tree stand is provided with a lightweight composite platform and a flexible steel truss belt encircling and engaging the supporting tree. One end of the belt and the belt length adjustment member has supporting links at opposite sides of the platform. These links are movable from an automatically locked, collapsed position to a raised and automatically locked operative position extending upwardly and forwardly from the platform. The belt and belt adjustment member are supported by pivotal attachment to respective links carrying a sliding guide slot. The guide slot receives a compression spring actuated cylinder plunger biased to engage holes at opposite of the guide length. The cylinder plunger is recessed through the platform supporting angle into the sides of the composite platform and allows lateral movement of the supporting lengths and the encircling belt, thus eliminating the need for universal joints. The belt adjustment member housing is attached to one end of a second link that is pivotally attached to the supporting platform angle at the other end. The length of the encircling belt is changed by its position relative to two engaging, single axle, independently spring actuated, cam members in the adjustment member housing. The cam members are released from engagement by removal of the platforms load and by application of tension to a handle on the operating wires.
REFERENCES:
patent: 4597473 (1986-07-01), Peek
patent: 5265780 (1993-11-01), Matthews
patent: 5310019 (1994-05-01), Paul
patent: 5379861 (1995-01-01), Amacker
"Shooter" by Summit Industries.
Chin-Shue Alvin C.
Martin Rick
LandOfFree
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