Fire escape – ladder – or scaffold – Torso harness
Patent
1985-02-08
1987-06-16
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Torso harness
182142, 182150, A62B 106
Patent
active
046730591
ABSTRACT:
A method and system for placing a load, which may consist of a combination of personnel, equipment and material, on or in proximity to components of an energized transmission line system. An ungrounded, overhead, aerial support means, such as a helicopter or crane, provides maneuverable support to a suspension means having dielectric strength or insulating means to minimize injurious fault current flow resulting from contact between energized and grounded components of the placement system and transmission line system. The system of ungrounded and insulated support permits contact between differing but ungrounded potentials to permit live line and barehand procedures in servicing, repairing, maintaining and constructing energized transmission line systems. A limited slip device may be used with the suspension means to provide additional length to the suspension means during movement of the supporting means, such as a helicopter, while it may be momentarily tethered to the transmission line system. A specialized retaining means may be utilized to attach the load to the suspension means. This system permits contact with an energized component thereby changing the potential of the system to that of the energized component without fault current flow. Insulated links may be used in the suspension means to maintain the integrity of the ungrounded system.
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Chin-Shue Alvin
Machado Reinaldo P.
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