Elevator button improved to function as a lock

Details Elevator button improved to function as a lock Elevator button improved to function as a lock

1991-12-10

1994-01-04

Yusko, Donald J.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

34082531, 34082506, 361179, 361181, 187130, B66B 300, G08B 108, H04B 159

Patent

active

052762947

ABSTRACT:
The invention prioritizes elevator service by an electronic lock and key circuit which uses a pre-existing capacitive touch button, an electronic key for receiving a 10 KHz first button pulse train from the face of the capacitive touch button and modulating said capacitive touch button pulse train with a signal of a preset frequency. A modulated first pulse train is provided back to the capacitive touch button face and an electronic lock for modulating a demodulated first pulse train received at the capacitive touch button face so as to provide a high priority hall call or a car call.

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