Intrusion detecting switch
First Claim
1. An intrusion detecting apparatus for detecting intrusions into an enclosure comprising:
- first housing means attached to a wall of the enclosure;
second housing means attached to a closure member of the enclosure and in proximity to said first housing means;
Hall effect sensing means contained in one of said housing means, said Hall effect sensing means being connected in a circuit for supplying power thereto and for providing an output therefrom;
magnetic means contained in the other of said housing means for controlling said output of said Hall effect sensing means dependent upon the relative proximity of said Hall effect sensing means to said magnetic means; and
a mounting device for mounting said other of said housing means to said enclosure so that said magnetic means must be removed before said other of said housing means can be removed from said enclosure.
1 Assignment
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Accused Products
Abstract
An intrusion detecting switch is disclosed having an operator and a sensing device for sensing the detection of intrusions and to a protected area. The operator may be a magnet and the sensing device may be Hall effect switches the resistance of which will switch between high and low values in the presence and absence of the magnetic field. A mounting device may be provided for mounting the housing containing either the sensing device or the operator to its support. The mounting device is located behind the operator or sensing device such that if the housing is to be removed from its support, the sensing device or operator must be first removed which will result in an alarm.
24 Citations
17 Claims
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1. An intrusion detecting apparatus for detecting intrusions into an enclosure comprising:
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first housing means attached to a wall of the enclosure; second housing means attached to a closure member of the enclosure and in proximity to said first housing means; Hall effect sensing means contained in one of said housing means, said Hall effect sensing means being connected in a circuit for supplying power thereto and for providing an output therefrom; magnetic means contained in the other of said housing means for controlling said output of said Hall effect sensing means dependent upon the relative proximity of said Hall effect sensing means to said magnetic means; and a mounting device for mounting said other of said housing means to said enclosure so that said magnetic means must be removed before said other of said housing means can be removed from said enclosure. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An intrusion detector for detecting intrusions into an enclosure comprising:
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first housing means mounted to a wall of said enclosure, said wall acting as a support for said first housing means; second housing means mounted to a closure member of said enclosure, said closure member acting as a support for said second housing means; sensing intrusion means contained in one of said housing means; operator intrusion means contained in the other of said housing means for operating said sensing means during intrusions; and
,mounting means for mounting said one of said housing means to its support and including a first mounting device covered by one of said intrusion means and a second mounting device for holding said one of said intrusion means within its housing means so that access to said first mounting device can only be obtained by first removing said one of said intrusion means. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification