Lock for doors

Locks – Portable

Patent

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Details

70101, 70129, 292288, 292289, E05C 1918

Patent

active

052917606

ABSTRACT:
A portable lock for doors, intended for use at hospitals, nursing homes, or other institutions, whose rooms do not have a lock when they are occupied by patients or other occupants. The lock has a unitary plate upon which is mounted a clamping mechanism for attachment to the door and a locking mechanism. The lock can be manually attached and removed from the door without the use of tools and is independent of the doorknob or handle assembly and the associated keeper. In one embodiment, a key is used to unlock the door, and in another embodiment, a padlock or combination lock, and/or a tamper proof seal can be used to lock the door.

REFERENCES:
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patent: 1485207 (1924-02-01), Accetta
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patent: 3181319 (1965-05-01), Hudon
patent: 3711894 (1973-01-01), Walters
patent: 3961816 (1976-06-01), Mueller
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patent: 4052032 (1977-10-01), Lovisa et al.
patent: 4059299 (1977-11-01), Huntley
patent: 4169619 (1979-10-01), McCracken
patent: 4307904 (1981-12-01), Daus
patent: 4326394 (1982-04-01), Stein
patent: 4399672 (1983-08-01), Moorhouse

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