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A security latch for sashes comprises a shell body, a moving piece, an axle and a resilient assembly. An accommodating cavity is formed inside the shell body and opened at a flat side of the shell body, and a first concave surface is formed at a bottom of the accommodating cavity away from the flat side. The moving piece is received in the accommodating cavity and is rotatable around the axle installed in the accommodating cavity. The moving piece comprises an engaging face formed at a side thereof and a second concave surface formed at another side thereof. The resilient assembly is disposed between the first concave surface and the second concave surface to resiliently and movably engage with the first and second concave surfaces. The engaging face emerges out of the accommodating cavity from the flat side for blocking any movement along the flat side.
A security latch for sashes comprises a shell body, a moving piece, an axle and a resilient assembly. An accommodating cavity is formed inside the shell body and opened at a flat side of the shell body, and a first concave surface is formed at a bottom of the accommodating cavity away from the flat side. The moving piece is received in the accommodating cavity and is rotatable around the axle installed in the accommodating cavity. The moving piece comprises an engaging face formed at a side thereof and a second concave surface formed at another side thereof. The resilient assembly is disposed between the first concave surface and the second concave surface to resiliently and movably engage with the first and second concave surfaces. The engaging face emerges out of the accommodating cavity from the flat side for blocking any movement along the flat side.
SECURITY LATCH FOR SASHES
2018-06-28
Patent
Electronic Resource
English
IPC:
E05C
Riegel oder Feststellvorrichtungen für Flügel, insbesondere für Türen oder Fenster
,
BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
Tilt latch retainer apparatus and sashes incorporating same
European Patent Office | 2019
|British Library Online Contents | 2004
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