Fire escape – ladder – or scaffold – Torso harness – Attached to strand wound on reel – and means for retarding...
Patent
1997-09-30
1998-12-01
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Torso harness
Attached to strand wound on reel, and means for retarding...
182240, 182 71, 182 72, 182236, 182235, 182 6, A62B 108
Patent
active
058425420
ABSTRACT:
A single rope descending device, especially a portable descending device for use of a single person, comprises a receiving housing, a cap, an adjusting nut, and a rope windlass. The receiving housing is made up of a left and a right semi-circular hollow halves within which the rope windlass having a rope wound and raveled thereon is housed. Each half of the receiving housing is provided with a tapered protruding end wherein corresponding serrated clamping edges define the assembling part thereof to boost up the resistant force of the rope passed through the twist and turn formed thereby. The cap is screwed up to conic outer threads of the tapered protruding ends to clamp tight the tapered protruding ends against the rope. An adjusting rod screwed up to one peripheral surface of the cap can be swung which in turn will activate the movement of the cap so as to regulate the clamping force of the tapered protruding ends against the rope so that the descending device can be descended safely and smoothly at a regular speed. In addition, the serrated clamping edges of the tapered protruding ends can also be made into straight edges so as to simplify the production of the serrated clamping edges thereof.
REFERENCES:
patent: 514802 (1894-02-01), Wood
patent: 539958 (1895-05-01), Madden
patent: 797903 (1905-08-01), Meadens
patent: 859266 (1907-07-01), Ulery
patent: 1198926 (1916-09-01), Kemp
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