Luminaire lowering device with centering means

Details Luminaire lowering device with centering means Luminaire lowering device with centering means

1977-07-25

1982-09-07

Walsh, Donald P.

Illumination

Supports

Support having gravity-type light source or light modifier...

362391, 362431, F21V 2136

Patent

active

043487173

ABSTRACT:
Apparatus for maintaining coaxial alignment of luminaire support ring on a pole as it is raised or lowered on the pole. The aligning apparatus comprises a plurality of roller members secured around the support ring and resiliently urged against the pole surface to maintain the support ring in substantially centered position relative to the pole and to avoid shock to the luminaires by impact of the support ring on the pole.

REFERENCES:
patent: 3633980 (1972-01-01), Hunt
patent: 3670159 (1972-06-01), Millerbernd
patent: 3801813 (1974-04-01), Kiehn
patent: 3805054 (1974-04-01), Wolf
patent: 3847333 (1974-11-01), Zeller
patent: 3958116 (1976-05-01), Jones
patent: 4001573 (1977-01-01), Derasp
patent: 4025782 (1977-05-01), Kaeser

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