Movable or removable closures – Mounted for multidirectional or oblique movement – Swings on plural axes; e.g. – pivotal link arms
Patent
1998-05-29
2000-05-16
Redman, Jerry
Movable or removable closures
Mounted for multidirectional or oblique movement
Swings on plural axes; e.g., pivotal link arms
49394, E05D 1528
Patent
active
060619627
ABSTRACT:
An operator and secondary lock for a jalousie window includes a linkage with two toggle joints and a locking lever having a camming edge. The toggle joints assist in locking the window in its fully opened or fully closed position. The toggle joints are actuated by a lever mounted to the window frame so as to provide a mechanical advantage for operation of the jalousie window. The secondary lock engages a lower connecting bar when the windows are in their closed position to prevent opening of the windows by negative air pressure or by prying. The mechanical advantage afforded by the operator allows relatively heavy jalousie window louvers and associated moving components to be actuated over a tolerable range of actuating forces. In addition, brakes permit the louvers to be held frictionally at any fixed orientations between the fully opened and fully closed positions of the window.
REFERENCES:
patent: 2761674 (1956-09-01), Walberg et al.
patent: 3954023 (1976-05-01), Perez-Aguilar
patent: 3994095 (1976-11-01), Hare
patent: 4449121 (1984-05-01), Sosa
patent: 4926599 (1990-05-01), Scholz
patent: 5907926 (1999-06-01), Sosa
Redman Jerry
Vent-Alarm Corporation
LandOfFree
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