| 摘要 |
The releasable safety catch for use with opening panels, particularly windows, comprises a base plate 110 having an abutment 50, a catch 118 mounted to pivot relative to the base plate 110 and movable between an open and a closed condition relative to the base plate, the catch 118 having an abutment portion 120 engageable with the abutment 50 to limit pivotal movement of the catch 118 in one arcuate direction, resilient means biasing the abutment portion 120 towards the abutment 50, and the resilient means 135 having a terminal portion 132 always to the same side of the abutment 50 as the abutment portion 120. With this arrangement the base plate 110 is subjected to forces in only one angular direction and thus the base plate 110 is less likely to become free from the window frame. <IMAGE>
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