External latch structure for locking a door in different positio

Details External latch structure for locking a door in different positio External latch structure for locking a door in different positio

1988-05-20

1989-10-10

Dorner, Kenneth J.

Movable or removable closures

With means mounting closure for reciprocation

With latch or lock

292 6, 292183, 292201, E05D 1304

Patent

active

048722863

ABSTRACT:
Locking mechanism for locking and unlocking a sliding-type door. The mechanism for the most part is mounted externally of the door, and includes a pivoted, frame-mounted locking member pivotable between locking and unlocking positions. A dead latch latches the locking member in its locking position. An air cylinder is actuated, first to release the dead latch, and then to shift the locking member to its unlocking position. A door-carried locking member also is provided for locking the door at a region remote from the region locked by the frame-mounted locking member.

REFERENCES:
patent: 2095695 (1937-10-01), Greegor
patent: 2989304 (1961-06-01), Ulmann
patent: 3426478 (1969-02-01), Sturges et al.
patent: 3426829 (1969-02-01), McDaniel et al.
patent: 3564772 (1971-02-01), Ozier et al.
patent: 4368770 (1983-01-01), Ulfhielm
patent: 4723373 (1988-02-01), Jump

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