Door alarm
First Claim
1. A door alarm comprising:
- an alarm means for generating an alarm signal, including a housing and manually actuable alarm conditioning means on a front face of the housing;
switch means for activating the alarm including a first component with a switch head adapted to be removably mounted on a door adjacent an edge thereof and a flexible electrical wire connecting the switch head to the alarm means, and a second component adapted to be mounted on a door frame adjacent the switch head of the first component, the components and alarm means being so constructed and arranged that moving the switch head away from the second component will activate the alarm;
clamp means for clamping the alarm means to a doorknob shank, the clamp means including locking means for locking the clamp onto the door knob shank; and
hinge means secured to the housing and to the clamp means for suspending the housing from the clamp means, with the housing pivotable upwardly about a hinge axis substantially parallel to the front face of the housing.
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Accused Products
Abstract
A portable door alarm is used in such environments as hotel rooms and the like. The alarm has a housing containing the alarm mechanism with a front face on which the alarm controls are mounted. The housing is suspended from the shank of a door handle by a locking clamp connected to the housing by a hinge. The hinge allows the housing to be pivoted upwardly so that the alarm controls can be manipulated from a standing position. The activation of the alarm is with a two component switch. The components of the switch are mounted on the door frame and the door in adjacent positions. The door mounted switch component is connected to the alarm mechanism in the housing with a relatively long flexible electrical wire. The arrangement is such that when a door is opened, the switch circuit opens and the alarm is activated.
20 Citations
16 Claims
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1. A door alarm comprising:
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an alarm means for generating an alarm signal, including a housing and manually actuable alarm conditioning means on a front face of the housing; switch means for activating the alarm including a first component with a switch head adapted to be removably mounted on a door adjacent an edge thereof and a flexible electrical wire connecting the switch head to the alarm means, and a second component adapted to be mounted on a door frame adjacent the switch head of the first component, the components and alarm means being so constructed and arranged that moving the switch head away from the second component will activate the alarm; clamp means for clamping the alarm means to a doorknob shank, the clamp means including locking means for locking the clamp onto the door knob shank; and hinge means secured to the housing and to the clamp means for suspending the housing from the clamp means, with the housing pivotable upwardly about a hinge axis substantially parallel to the front face of the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification