Fire escape – ladder – or scaffold – Pole or strand grasping-type climber – Foot- or leg-attachable
Patent
1997-04-17
1999-01-19
Chin-Shue, Alvin
Fire escape, ladder, or scaffold
Pole or strand grasping-type climber
Foot- or leg-attachable
182221, 182 92, E06C 700
Patent
active
058604901
ABSTRACT:
An ascending and descending device, or ladder, having a single central mast and a hand and two foot supports axially slidably engaging the mast. Each hand and foot support has a spring biased clutch normally preventing axial motion of its associated support along the mast, and a lever for releasing the hand or foot support to move along the mast. The hand support has weight bearing platforms, or grips, projecting to both sides of the mast. Each foot support projects to one side of the mast. The foot supports are tethered together to limit the distance by which they become separated when lowering one foot support. The mast has at its bottom end a base having folding legs. The mast selectively receives at its top end a pronged support for engaging the roof of a building and a chair to enable a person to remain seated above the ground. The chair has a safety tie for securing the chair to a tree.
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Long Donald J.
Petti John A.
Chin-Shue Alvin
Siemens Terrance L.
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