Elevator system with lamp failure monitoring

Details Elevator system with lamp failure monitoring Elevator system with lamp failure monitoring

1985-06-05

1987-02-24

Rowland, James L.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 300

Patent

active

046460586

ABSTRACT:
An elevator system which includes a plurality of lamps, each associated with a different floor number of an associated building. Lamp burn-out is detected via a single current sensor disposed in the common return of the lamps, along with logic which indicates when a test should be made, and which lamp is being tested. Detection of a burned-out lamp is stored for maintenance purposes.

REFERENCES:
patent: 3706972 (1972-12-01), Okuhara
patent: 3706983 (1972-12-01), Olson et al.
patent: 4173750 (1979-11-01), Riba
patent: 4217576 (1980-08-01), Wreford-Howard
patent: 4234878 (1980-11-01), Stark
patent: 4295079 (1981-10-01), Otsuka et al.
patent: 4307392 (1981-12-01), Loshbough et al.
patent: 4323841 (1982-04-01), Jacobsen
patent: 4354181 (1982-10-01), Spletzer
patent: 4555689 (1985-11-01), Brick et al.

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