Fire escape – ladder – or scaffold – Torso harness – Strand-engaging – with descent retarder
Patent
1982-06-18
1984-10-02
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Torso harness
Strand-engaging, with descent retarder
188 655, A62B 114
Patent
active
044742622
ABSTRACT:
A descent device for sliding frictional engagement with a rope and including an elongate vertical shaft with a head structure at the upper end of the shaft and a base structure at the lower end of the shaft. Both structures contain u-shaped, rope receiving slots having an inner wall and opposed side walls. A removable tubular shell extends over the head and base structures to close the rope-receiving slots.
One of said rope-receiving slots contains a brake shoe which is movable between a retracted position in which the outer surface thereof is contiguous with the inner wall of the slot and an extended position in which said outer surface is adjacent to the tubular shell so as to retain the rope between said shell and the brake shoe. The brake shoe is yieldably biased toward the extended position, and an external handle is provided for manually moving the brake shoe to the retracted position.
A bale wire can also be provided on the shell for maintaining the handle in the retracted position, and an adjusting screw can also be provided adjacent the brake shoe actuating rod to maintain the brake shoe in selected adjusted positions between the retracted position and the fully extended position.
REFERENCES:
patent: 387650 (1888-08-01), Lovejoy
patent: 899984 (1908-09-01), Huffman
patent: 1188991 (1916-06-01), Putman
patent: 1591584 (1926-07-01), Vishner
patent: 1831068 (1931-11-01), Hayslip
patent: 2226937 (1940-12-01), Masset
patent: 2758887 (1956-08-01), Herod
patent: 3220511 (1965-11-01), Holkesvick
patent: 3550726 (1970-12-01), Chezem
Bell Michael
Chin-Shue Alvin
Machado Reinaldo P.
Wills Charles E.
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