System for monitoring the closing of a door

Details System for monitoring the closing of a door System for monitoring the closing of a door

1988-11-15

1990-08-28

Ro, Bentsu

Electricity: motive power systems

Automatic and/or with time-delay means

Movement, position, or limit-of-travel

318652, 318653, 34087031, 32420711, G08C 1930

Patent

active

049528556

ABSTRACT:
The invention relates to a system for monitoring the closing of a door or other such barrier, such as a sliding door of a vehicle. This system has a circuit outside of the door which serves to emit a signal indicating the open or closed state of the door. In the production of this signal, the need for any electromechanical limit switches or indicating devices mounted on the door and coupled galvanically with the circuit is avoided by providing, in accordance with the invention, a circuit that is mounted on the door. Both circuits have at least one inductive element. The inductive elements are coupled only inductively with one another, but are not in physical contact with one another, so that the production of the signal indicating the open or closed state of the door can be performed contactlessly.

REFERENCES:
patent: 3370677 (1968-02-01), Federmann et al.
patent: 3689814 (1972-09-01), Holt
patent: 3845843 (1974-11-01), Cohen
patent: 4001661 (1977-01-01), Terabayashi
patent: 4351016 (1982-09-01), Felbinger
patent: 4410843 (1983-10-01), Sauer et al.
patent: 4463290 (1984-07-01), Asakawa et al.
patent: 4631461 (1986-12-01), Peugeot
patent: 4635032 (1987-01-01), Virtanen

Affiliated with

Also associated with

Rating

System for monitoring the closing of a door does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for monitoring the closing of a door, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for monitoring the closing of a door will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1592018