Fire escape – ladder – or scaffold – Pole or strand grasping-type climber
Patent
1995-06-19
1997-07-15
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Pole or strand grasping-type climber
182187, A63B 2700
Patent
active
056474547
ABSTRACT:
A new and improved portable tree climbing apparatus for a hunter for ascending and descending a tree is disclosed. The invention comprises an upper member having a seat adapted for swivelly supporting a hunter and an arcuate retaining loop adapted for rolling communication with the tree and keeping the upper member in a horizontal disposition when ascending and descending the tree. The retaining loop has a first end and a second end adapted for releasable engagement with the seat. A lower member has a safety blade disposed in releasable ratchetable engagement with a trunk of the tree for keeping the apparatus in stable communication with the trunk when ascending the tree. A traction wheel is disposed therebetween on an upstanding elongated member and has a plurality of teeth in intermittent contact with the trunk for effortlessly ascending and descending the tree. Finally, a plurality of cross braces are obliquely disposed and in support communication with the lower member and the upper member for maintaining the relative distance between the two members.
REFERENCES:
patent: 742447 (1903-10-01), Kidder
patent: 1299289 (1919-04-01), Berg
patent: 2654638 (1953-10-01), Elliott
patent: 3520383 (1970-07-01), Loock
patent: 3727723 (1973-04-01), Pitcairn et al.
patent: 4008785 (1977-02-01), Mugnaini
patent: 4150733 (1979-04-01), Plummer
patent: 5086874 (1992-02-01), Treants
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