Device for lifting a ban on the opening of a conditional locking

Details Device for lifting a ban on the opening of a conditional locking Device for lifting a ban on the opening of a conditional locking

1998-05-28

2000-03-07

Barrett, Suzanne Dino

Locks

Operating mechanism

Predetermined time interval controlled

70271, 702781, 34082531, E05B 4300

Patent

active

060324996

ABSTRACT:
A device for lifting, in particular in the event of a breakdown or failure, the ban on the opening of a conditional opening locking system. This device includes: driving means (MT); a transmission member (28); and a blocking member (PVI) connected to the driving means (MT) by the transmission member (28) and able to be actuated by the driving means (MT) to occupy an active position (P1) in which the blocking member opposes the movement of a bar, and an inactive position (P2) in which the blocking member authorizes the movement thereof, the device including de-activation means (54, 64, 66) provided for freeing the transmission member (28) and authorizing the release of the blocking member (PVI) from the blocking member's active position (P1). The device is applicable in particular to a conditional opening locking system and particularly to a time lock.

REFERENCES:
patent: 2073523 (1937-03-01), Meilink
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patent: 3576119 (1971-04-01), Harris
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patent: 3950678 (1976-04-01), Brewer
patent: 4137738 (1979-02-01), Marold
patent: 4633687 (1987-01-01), Fane
patent: 4634846 (1987-01-01), Harvey et al.
patent: 4774512 (1988-09-01), Jolidon et al.
patent: 4944170 (1990-07-01), Jolidon et al.
patent: 4977765 (1990-12-01), Legault et al.
patent: 5307655 (1994-05-01), Boltz et al.
patent: 5638712 (1997-06-01), Kuroda
patent: 5774066 (1998-06-01), Pellaton et al.

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