| 摘要 |
A friction stay comprises a strut 13 extending between a sash arm 11 and a track 15. The stay comprises a breakable or releasable connection formed in the strut 13 or at the pivotal connection between the strut and the track 15 to allow additional opening of the window in an emergency. In the embodiment shown the connection comprises an opening 27 having a restricted mouth 28 formed in an end of the strut 13 which engages with a pivot rod 24 on the track 15. The rod is longitudinally moveable to enable the strut 13 to be disengaged from the rod 24. In a further embodiment (Figs. 1 & 2) the pivot between the strut 13 and the track 15 is formed by a nylon rod 19. The rod 19 is configured such that a longitudinal force, along the strut 13, will break the rod. In further embodiments (not shown) the connection comprises means for frictionally engaging strut portions, or a breakable or releasable sleeve interconnecting two strut portions. <IMAGE>
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