Device for unlocking and locking of doors, particularly of motor

Details Device for unlocking and locking of doors, particularly of motor Device for unlocking and locking of doors, particularly of motor

1979-02-06

1981-06-02

Cohen, Irwin C.

Locks

Systems

Operation and control

60412, 180289, E05B 6538

Patent

active

042703719

ABSTRACT:
A device for unlocking and locking of doors, particularly of motor vehicle doors, with a pump delivering low pressure and high pressure, the outputs of which are connectable via a two-way valve which is actuatable upon each unlocking and locking operation, respectively, with pneumatic positioning elements which act on the door locking mechanism and with electrical switches for switching the pump respectively on and off via a reversing switch, the electrical switches being actuatable by means of a door key and arranged in the several, lockable doors, the reversing switch being able to be switched-over by means of a delayed-responding actuating means. An additional pneumatic positioning element is provided as the delayed-responding actuating means, which additional positioning element is connected to an output of the two-way valve. The two-way valve and the reversing switch are actuatable by means of the additional positioning element.

REFERENCES:
patent: 1925109 (1933-09-01), Olson
patent: 2323519 (1943-07-01), Dean
patent: 2425391 (1947-08-01), Parsons
patent: 3111184 (1963-11-01), Oishei

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