E - Fixed Constructions – 05 – C
Patent
E - Fixed Constructions
05
C
292/49
E05C 1/00 (2006.01) E05B 65/08 (2006.01)
Patent
CA 1182491
-9- LATCHING DROP LOCK FOR SLIDING CLOSURE MEMBER Abstract of the Disclosure A latching drop lock for a movable closure member such as a sliding glass window includes a lock body that supports a pivotably mounted, elongated latch element. The lock body and the latch element are slidable as a unit along one side of the movable frame and are slidably engaged in a peripheral channel thereof. The lock body includes a lock bolt element that is insertable in an aperture in the fixed frame to secure the sliding window in a closed position. The elongated latch element includes at one end a detent that is fixedly engageable with the window frame to secure the drop lock in the locked position. The latch element further includes an integral resilient bias spring that urges the lock element rotated about its pivot axis so as to engage the detent whenever the drop lock is slid to the locked position. The latch element further includes manually depressible means operable to disengage the detent and unlatch the drop lock. Two separate motions are required to unlatch and unlock the sliding window, namely, depression of the depressible means and simultaneous upward sliding of the drop lock assembly, thereby rendering the drop lock relatively invulnerable to tampering and picking.
418615
Smart & Biggar
Vanguard Plastics Ltd.
LandOfFree
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