Free fall safety assembly for use with a luminaire raise-lower a

Details Free fall safety assembly for use with a luminaire raise-lower a Free fall safety assembly for use with a luminaire raise-lower a

1975-06-16

1976-08-31

Hafer, Robert A.

Supports

Stand and bracket

Having adjustable bracket

240 88, 240 64, A47G 2900

Patent

active

039776395

ABSTRACT:
An auxiliary assembly for use with an apparatus which raises and lowers a luminaire support ring along a support pole and which supports the ring during this movement is disclosed herein. The apparatus includes a main drive, a main cable connected to the drive and a plurality of secondary cables connecting the main cable and therefore the main drive to the luminaire support ring. The auxiliary assembly includes an auxiliary supporting arrangement connected with the main cable of the apparatus whereby to support the ring in the event there is a failure of either the main cable or the main drive to support the ring. This assembly also includes a device for automatically and substantially immediately sensing the presence of such a failure and for automatically providing a predetermined signal at substantially the moment of failure. In addition, the assembly includes a device which cooperates with the auxiliary supporting arrangement for at least slowing down, preferably stopping, movement of the luminaire support ring in response to the failure indicating signal.

REFERENCES:
patent: 3265360 (1966-08-01), Tax
patent: 3608864 (1971-09-01), Dargitz
patent: 3673403 (1972-06-01), Woods
patent: 3686498 (1972-08-01), Meyer
patent: 3759489 (1973-09-01), Jones
patent: 3840212 (1974-10-01), Latanision
patent: 3847333 (1974-11-01), Zeller
patent: 3856639 (1974-12-01), Rohn et al.

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