Emergency intercommunication system for elevator

Details Emergency intercommunication system for elevator Emergency intercommunication system for elevator

1990-08-17

1992-02-04

Dwyer, James L.

Telephonic communications

Emergency or alarm communications

Responsive to sensed nonsystem condition

379 45, 187140, H04M 1104

Patent

active

050864505

ABSTRACT:
An emergency intercommunication system for an elevator has an interphone unit and an intercommunication command switch located in an elevator car. A telephone number input apparatus for inputting the desired telephone number is provided in an elevator hall, in connection with a register apparatus for storing the input telephone number. An intercommunication command detecting section for detecting the actuation of the switch is provided in connection with an emergency call apparatus for automatically dialing the stored telephone number to connect the interphone unit with a telephone having the telephone number when the actuation of the switch is detected by the detecting apparatus. Preferably, an identification number input apparatus is provided in the elevator hall so that the register apparatus stores the telephone number only when it is input together with a predetermined identification number.

REFERENCES:
patent: 3973648 (1976-08-01), Hummert et al.
patent: 4491198 (1985-01-01), Noda et al.

Affiliated with

Also associated with

Rating

Emergency intercommunication system for elevator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Emergency intercommunication system for elevator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Emergency intercommunication system for elevator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-350843