Rear door safety lock arrangement

Details Rear door safety lock arrangement Rear door safety lock arrangement

1985-07-02

1987-03-24

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

307 10AT, 70264, 70279, 361160, 180281, E05B 6536

Patent

active

046527680

ABSTRACT:
This invention relates to a locking mechanism for the locks of the rear doors of a motor vehicle with one locking device for each door lock acting against the unauthorized opening of the doors from the interior side of the doors, a so called child safety lock. Each locking device is assigned an electric-motor-driven control unit, the rotational direction of said control unit being reversible via a double pole changing switch (double throw switch) and said control unit being connected with it and being able to be remotely operated with respect to locking or unlocking of the lock by a switching element that can be operated from the front seats. The locking condition of the locking device is indicated by an optical display.
To reduce manufacturing parts and expenses for the circuit controlling the optical display, this circuit is formed by parts of the circuit controlling the locking devices themselves. In certain embodiments the optical display is connected in series with a p-n-p transistor having its base and collector connected with respective grounded "off" lines of the locking device control circuits.

REFERENCES:
patent: 3234766 (1966-02-01), O'Brien
patent: 3593816 (1971-07-01), Kazaoka
patent: 3643479 (1972-02-01), Solow
patent: 3722615 (1973-03-01), Okada et al.
patent: 3765502 (1973-10-01), Mark
patent: 3779332 (1973-12-01), Snitgen
patent: 3785187 (1974-01-01), Wolz
patent: 3877266 (1975-04-01), McLaughlin
patent: 4137985 (1979-02-01), Winchell
patent: 4203039 (1980-05-01), Pritchard
patent: 4466044 (1984-08-01), Fey
patent: 4483410 (1984-11-01), Fey
patent: 4537049 (1985-08-01), Lupoli

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