Combination four-position sash lock and tilt latch also functioning as a window opening control device
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United States of America Patent
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Nov 24, 2020
Grant Date -
Mar 10, 2016
app pub date -
Oct 13, 2015
filing date -
Mar 6, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A sash window fastener includes a lock assembly, latch assembly, and stop member. The lock assembly mounts upon the meeting rail, and includes a pivotable cam to engage a keeper on the master frame, and a pivotable arm that acts as a follower. The arm interconnects with the latch within the meeting rail, so cam rotation controls arm positioning—causing translational movement of the latch. The cam can occupy four positions causing four corresponding latch positions: an extended position securing the cam to the keeper, with the latch engaging the master frame to prevent tilting, and contacts a first stop to redundantly lock the window; a first retracted position permitting sliding of the window, but limited by the slightly retracted latch clearing the first stop but contacting a second stop; a second retracted position permitting sliding beyond the second stop, but preventing tilting; and a third retracted position permitting tilting.
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