Open window security lock
First Claim
1. A portable device for locking a double hung sliding window comprising a staff serving as a compression column and said device comprising a suction cup as fastening means mounted on said staff to position said staff between a lower moveable frame sash portion of a sliding window and a second upper frame portion of the double hung sliding window whereby said staff acting as a compression column can be mounted in proximity to the glass of a sliding glass window to intercept the lower moveable frame sash and lock the lower moveable frame sash portion to a fixed small limited opening position and said portable device comprising at the top end an electric switch which is held electrically open by resting against the top of the fixed immobile window frame such that lowering the upper window moveable frame sash allows said electric switch to close electrically thereby sounding an alarm associated with said electric switch.
0 Assignments
0 Petitions
Accused Products
Abstract
An open window security lock consisting of a staff having a suction cup for attachment of the staff to the window which allows a sliding window sash to open a small amount for ventilation but not opening enough to admit an intruder. The staff upper end has a switch to sound an alarm if the upper end is moved away from touching the fixed upper frame. An alarm switch can be a displacement detector, motion detector or vibration detector. The staff length is adjustable. A length clamping can be a detent button, staff wall set screw, metal collar with a set screw, hose clamp, or an eccentrically pinned lever. The alarm may include wireless transmitter communicating with a wireless receiver.
68 Citations
10 Claims
- 1. A portable device for locking a double hung sliding window comprising a staff serving as a compression column and said device comprising a suction cup as fastening means mounted on said staff to position said staff between a lower moveable frame sash portion of a sliding window and a second upper frame portion of the double hung sliding window whereby said staff acting as a compression column can be mounted in proximity to the glass of a sliding glass window to intercept the lower moveable frame sash and lock the lower moveable frame sash portion to a fixed small limited opening position and said portable device comprising at the top end an electric switch which is held electrically open by resting against the top of the fixed immobile window frame such that lowering the upper window moveable frame sash allows said electric switch to close electrically thereby sounding an alarm associated with said electric switch.
Specification