Fire escape – ladder – or scaffold – Scaffold external of shaft
Patent
1992-01-08
1995-01-10
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Scaffold external of shaft
182134, A01M 3102
Patent
active
053798619
ABSTRACT:
The invention relates to an apparatus for climbing an upright columnar member such as a tree, pole, or the like, using two climbing members. The first climbing member has a first upright member gripping structure and a movable platform spaced from the upright member to accommodate the body of the user in a sitting position. The second climbing member has a second upright gripping structure and a platform adjacent to the upright member to accommodate the feet of the user. One or both of the climbing members have a retraction device and locking mechanism for adjustably maintaining the climbing members in substantially horizontal position relative to the ground as the climber ascends or descends the tree.
REFERENCES:
patent: 932232 (1909-08-01), Adams
patent: 3485320 (1969-12-01), Jones
patent: 4321983 (1982-03-01), Nelson
patent: 4428459 (1984-01-01), Peck
patent: 4549633 (1985-08-01), Merritt
patent: 4834217 (1989-05-01), Manes
patent: 4995475 (1991-02-01), Berkbuegler
patent: 4997063 (1991-03-01), Bradley
patent: 5016733 (1991-05-01), Bradley
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