Illumination – With static structure – Staircase
Patent
1990-11-02
1992-03-24
Lazarus, Ira S.
Illumination
With static structure
Staircase
362276, 362802, F21V 3300
Patent
active
050994026
ABSTRACT:
The invention is a handrail illumination system that will provide uniform distribution of illumination on stairways, walkways and the like that is completely integrated within a handrail and includes a control circuit which energizes light assemblies automatically when any point on the surface of a wood handrail senses anatomical contact or anatomical proximity thereby eliminating the necessity of locating and actuating manually operated wall switches. The anatomical contact or proximity switch will remain in the on position for the duration of anatomical contact or proximity with a time delay switching the lamps to off position when anatomical contact or proximity terminates. The illuminating lamps and associated structure are incorporated into housings built into the handrail and the control circuit structure is likewise incorporated into a housing incorporated into the handrail. The anatomical contact or proximity sensing switch and related circuit provides for a manual adjustment of the time delay for switching lamps off when anatomical contact or proximity is terminated with the handrail illumiantion system also including self-adjustment in response to variations in ambient conditions for maintaining appropriate operating conditions of the system. The handrail includes a horizontal portion when used with a stairway to extend over the landings for anatomically switching the lamps on prior to engaging the steps in a stairway. The handrail includes a gripping arrangement in which the side panels enable engagement by the thumb and fingers throughout the length thereof with the control circuit providing a safe and dependable illumination system.
REFERENCES:
patent: 2766372 (1956-10-01), Aibris
patent: 3569689 (1971-03-01), Nestrock
patent: 3740541 (1973-06-01), Conradt
patent: 3813071 (1974-05-01), Noryd
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