Mechanism for releasably locking sashes in door-or window frames
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United States of America Patent
Stats
-
Dec 6, 1994
Grant Date -
N/A
app pub date -
Jun 4, 1993
filing date -
Aug 25, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A door- or window sash which is pivotable relative to a door- or window frame between open and closed positions can be releasably affixed to the frame in the closed position in response to turning of a handle which can shift an elongated carrier relative to the frame between two spaced-apart end positions. The carrier supports a series of longitudinally spaced-apart projections each of which fully engages a complementary retainer on the sash during different stages of movement of the handle from one end position to the other end position. The arrangement may be such that the projection nearest to the handle is first to engage the complementary retainer on the sash, that the projection which is adjacent the nearest projection is next to engage the corresponding retainer, and so on. A safety device can be provided to releasably lock the carrier in the other end position.
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Family
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Cited Art Landscape
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