Photoreflective elevator call button

Details Photoreflective elevator call button Photoreflective elevator call button

1997-12-31

1999-06-22

Nappi, Robert E.

Elevator, industrial lift truck, or stationary lift for vehicle

Having call button with indicator

187391, B66B 134

Patent

active

059144661

ABSTRACT:
An elevator call button senses the position of a push button by means of a photoreflective sensor, thereby eliminating the need for a mechanical switch.

REFERENCES:
patent: 4303856 (1981-12-01), Serras-Paulet
patent: 4716992 (1988-01-01), Kunii
patent: 5272383 (1993-12-01), Umemura et al.
patent: 5679933 (1997-10-01), Weber et al.

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