US 2003/0141974 A1Published application

Adjustable alarm device for sliding doors and windows

OwnerRobert Alleninventor

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Abstract

An adjustable alarm device for windows and doors is installed between the door or window frame and the door or window sash. The longitudinal axis of the alarm device is preferably horizontal. When engaged, movement of the door or window in an open direction will activate the alarm. The body of the alarm device is elongate, tubular and telescoping. The body comprises an outer tube that receives an inner tube. The body of the alarm device may be locked in an extended position by way of a cam mounted on the inner tube and positioned within the body so that when the inner and outer tubes of the body are twisted about their longitudinal axis, the cam body will engage the inner surface of the outer tube in a releasable frictional locking engagement. The alarm device is coupled to one end of the inner tube.

Claims31

Dependent claims

An adjustable alarm device for windows and doors having an elongate tubular telescoping body comprising:

a. an elongate outer first tube having a first end and a second end;
b. an elongate inner second tube having a first end and a second end, said elongate inner second tube slidingly received within said elongate outer first tube, said second end of the elongate inner second tube extending from said first end of the elongate outer first tube;
c. means for releasably locking the elongate inner second tube positionally with respect to the elongate outer first tube;
d. an elongate outer third tube having a first end and a second end, said elongate outer third tube coupled to the second end of the elongate inner second tube by coupling means;
e. an elongate inner fourth tube having an outer surface, said elongate inner fourth tube slidingly disposed within the elongate outer third tube, the elongate inner fourth tube extending from said second end of the elongate outer third tube;
f. an alarm circuit disposed within the elongate inner fourth tube;
and,
g. alarm actuation means disposed within said coupling means.

5 more elements

The alarm device as claimed in claim 4 wherein the elongate inner second tube further includes an inner surface, an outer surface, an inner diameter, an outer diameter, a longitudinal axis, a first pair of apertures disposed in said first end, wherein each aperture in said first pair of apertures positioned opposite to the other, and a second pair of apertures disposed in said second end, wherein each aperture in said second pair of apertures is positioned opposite to the other.

Dependencies are inferred from the claim text.