Stairway lighting system

Details Stairway lighting system Stairway lighting system

1981-08-31

1984-01-10

Walsh, Donald P.

Illumination

With static structure

Staircase

200 86R, 362251, 362272, 362802, F21S 102, F21V 3300, E04F 1100

Patent

active

044256019

ABSTRACT:
An improved apparatus for illuminating a plurality of stairs when in use involves a transformer to provide a reduced A. C. voltage; at least one light in proximity to the stairs to illuminate the stairs when at least a portion of the reduced A. C. voltage is supplied to the light and an electrical circuit including the light is formed; a rectifier to convert the reduced A. C. voltage to a D. C. voltage; a plurality of pressure sensitive switches associated with the rectifier and the treads of the stairs; physical pressure on the tread or treads acting to close at least one of the switches; and a relay in association with the pressure sensitive switches and light, and adapted to form the electrical circuit including the light in response to the closing of at least one of the pressure sensitive switches.

REFERENCES:
patent: 934122 (1909-09-01), Woodman
patent: 2756323 (1956-07-01), Tusly
patent: 3662229 (1972-05-01), Graff
patent: 3753217 (1973-08-01), Willfurth
patent: 3991415 (1976-11-01), Baar
Scientific American, Apr. 13, 1912, "Automatic Cellar Switch".
Industrial Catalog C-8, Tapeswitch Corp. of America, Jun. 13, 1979.

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