Patent ID: 6388572
Filing Date: 2002-05-14
Classification: E05B,G08B

Abstract:
A selectively positional alarm device for sliding windows and doors, comprising:an elongate telescoping tubular housing having a longitudinal axis and including a hollow outer tube having a first end and a second end, and an inner tube having a first end and a second end, said first end of said inner tube being slidably received in said first end of said outer tube, said second end of said inner tube extending from said first end of said outer tube; a first end plug fixed to said second end of said inner tube, and a second end plug slidably mounted in said second end of said outer tube, each said plug having an outer end sized and shaped to be received in a track of a sliding window sash or sliding door; a compression spring disposed within said outer and inner tubes to urge them into an opposed extended position such that said end plugs are removably held against said track only by the force of said compression spring; an alarm circuit disposed in said outer tube including a battery, an audio transducer electrically connected with said battery, and a normally-open switch located in said outer tube having normally-open contacts connected between said audio transducer and said battery; said tubular housing positioned a selected distance from a frame surface of said sliding window sash or sliding door in either a partially open position or fully closed position with its said longitudinal axis parallel to the plane of said frame surface; and actuator means disposed between the frame surface of said sliding window sash or sliding door and said normally-open switch to close said contacts and connect said battery with said audio transducer upon movement of said frame surface a distance toward said housing such that said partially open or fully closed sliding window sash or sliding door may be opened a distance less than said selected distance for ventilation without sounding the audible alarm, and upon further opening said window sash or door a distance approximate to said selected distance said audio transducer sounds an audible alarm.