Closure fasteners – Clamps – Ring
Patent
1985-12-12
1987-12-29
Gall, Lloyd A.
Closure fasteners
Clamps
Ring
292258, 292288, E05B 6506
Patent
active
047156295
ABSTRACT:
A child proof lock which has two parts. The first part is of strap-like construction, is attachable to a surface at one end, has a shaped aperture at the other, and has an elastic portion between the two ends. The second part is also attachable to a surface and includes a rotatably mounted toggle. The toggle is shaped so as to be able to pass through the aperture in the first part only when it has been correctly rotationally oriented. In use the first and second part of the child proof lock are attached to opposite sides of a door opening in a relationship whereby the first part must be expanded to allow the toggle to pass through the aperture. To lock the device the toggle on the second part is correctly rotationally oriented, the first part is expanded and the aperture passed over the toggle. When the first part retracts an abutment on the first part rotates the toggle thus locking the device. To unlock the device the first part is expanded using one hand and the toggle is rotated using the other hand enabling the two parts to be disengaged.
REFERENCES:
patent: 257986 (1882-05-01), Skerrett
patent: 949619 (1910-02-01), Burch
patent: 2608711 (1952-09-01), Moore
patent: 2687318 (1954-08-01), Cooper
patent: 3287045 (1966-11-01), Avery
patent: 3893725 (1975-07-01), Coulter et al.
patent: 4290633 (1981-09-01), Sullivan
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