Lock device for double sliding doors

Details Lock device for double sliding doors Lock device for double sliding doors

1986-12-05

1988-08-16

Gall, Lloyd A.

Locks

Special application

For closures

70100, 70213, 292207, E05B 6508

Patent

active

047634979

ABSTRACT:
A hook device for double sliding doors includes a stationary hook fixed to one door of the sliding doors and a rotary hook operable to engage and disengage the stationary hook fixed to the other sliding door. A code lock for setting a lock-hold mode and a lock-release mode provides security even in case when the glass of the doors may be broken and a hand is inserted to reach the lock device in an attempt to unlock it.

REFERENCES:
patent: 445108 (1891-01-01), Wright
patent: 1061283 (1913-05-01), Griffin
patent: 1097379 (1914-05-01), Tresselt
patent: 1507351 (1924-09-01), Heym
patent: 1966334 (1934-07-01), Cruse
patent: 2613526 (1952-10-01), Holmsten
patent: 3600019 (1971-08-01), Toyota
patent: 4036039 (1977-07-01), Nakanishi
patent: 4267716 (1981-05-01), Milles

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