Elevator system

Details Elevator system Elevator system

1976-02-17

1977-06-28

Trafton, David L.

Communications: electrical

Selective

Interrogation response

340 21, 340332, G08B 536

Patent

active

040328821

ABSTRACT:
An elevator system including an elevator car mounted for movement in a building to serve the floors therein. The elevator system includes control apparatus for selecting the service direction in which the elevator car will proceed from a floor it is serving. A display having an array of electrically energizable elements visually indicates the selected up or down service direction by sequentially energizing the elements to provide a predetermined pattern which moves upwardly, or downwardly, through the array, or which causes a predetermined pattern to lengthen in the upward, or downward direction.

REFERENCES:
patent: 634229 (1899-10-01), Collett
patent: 1655787 (1928-01-01), Harris
patent: 1691798 (1928-11-01), Cypser
patent: 1819247 (1931-08-01), Kinnard
patent: 1848366 (1932-03-01), Lewis
patent: 2980886 (1961-04-01), Yeakley
patent: 3747063 (1973-07-01), Hudson
patent: 3959768 (1976-05-01), Mayo

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