Fire escape – ladder – or scaffold – Torso harness
Patent
1977-07-11
1978-09-26
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Torso harness
188 651, A62B 3500
Patent
active
041163052
ABSTRACT:
The unitary rope grap disclosed is used as an arresting device in co-operation with a lifeline, which is adapted to pass through the rope grab. One end of the lifeline is affixed to an elevated position. A safety line attached to the worker is also attached to the rope grab and, when the worker falls from his elevation, this trips the rope grab to rigidly secure the rope grab to the lifeline and hence arrest the worker from further fall via the connection of the safety line between the worker and the rope grab. This is achieved by the rope grab having an essentially jaw-like frame which defines a throat with distal and proximate regions whereby the proximate region has a larger cross section then the cross section of the distal region, and the lifeline, which passes through the throat, has a cross sectional area larger than the proximate region but generally smaller than the distal region. During the engagement process, the rope migrates from the distal region of the throat to the proximate region to fixedly secure the rope grab to the lifeline; thereupon the falling worker is arrested.
REFERENCES:
patent: 1127832 (1915-02-01), Voigt
patent: 2172094 (1939-09-01), Voigt
patent: 2684875 (1954-07-01), Kircher
Leduc Safety Basket Corporation
Machado Reinaldo P.
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