Fire escape – ladder – or scaffold – Platform with elevating or lowering means – Suspended
Patent
1981-04-13
1983-12-27
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Platform with elevating or lowering means
Suspended
182150, 182 63, E04G 310
Patent
active
044225288
ABSTRACT:
A basket structure for supporting linemen performing maintenance work on tower supported lines and method of performing same is disclosed. The basket is embodied within an enclosure having corner members in attachment to sling lines of a helicopter. An inclined appendage on each corner post engages a segment of the tower supported line during elevation of the enclosure by the helicopter to temporarily secure the enclosure in place on the line to permit maintenance task performance. The inclined appendages include a resilient covering to enhance line or static wire engagement. Lugs at the corner post upper ends attach the sling lines in an offset manner to permit unobstructed vertical movement of the enclosure past the line preliminary to upward seating of a pair of appendages against the line.
REFERENCES:
patent: 2009474 (1935-07-01), Castelli
patent: 2433859 (1948-01-01), McCormick
patent: 3042385 (1962-07-01), Smith
patent: 3146853 (1964-09-01), Eckels
patent: 3176795 (1965-04-01), Taylor
patent: 3863736 (1975-02-01), McWilliams
Chin-Shue Alvin
Columbia Helicopters, Inc.
Givnan, Jr. James D.
Machado Reinaldo P.
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