Closure fasteners – Extension link
Patent
1994-09-12
1996-03-26
Meyers, Steven N.
Closure fasteners
Extension link
292288, 292DIG2, C05C 1704
Patent
active
055014941
ABSTRACT:
A portable door lock includes an interior member and an exterior member which are connected to each other by a cord. The interior member is slidable along the cord and the cord is provided with a stopping member which is engageable by the interior member to prevent movement of the interior member along the cord away from the exterior member. In a first embodiment, the interior and exterior members are spheres and the stopping member is a knot and a washer. The interior sphere is substantially hollow and has a through bore with a key hole for engaging the washer. The cord is provided with a loop adjacent the exterior sphere for hanging the exterior sphere on an exterior door knob. In a second embodiment, the exterior member is a truncated hollow sphere which is dimensioned to fit over an exterior door knob. The strength of the lock is dependent on the materials chosen, but should be sufficient to be impenetrable by children, but easy for an adult to break.
REFERENCES:
patent: 3451708 (1969-06-01), Brooks
patent: 3782149 (1974-01-01), Carter
patent: 3836187 (1974-09-01), Buettner
patent: 4022503 (1977-05-01), Bey
patent: 5004279 (1991-04-01), Radcliff
patent: 5029916 (1991-07-01), Chiu
Meyers Steven N.
Millner Monica E.
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