Attitude change alarm
First Claim
1. An attitude change alarm, comprising:
- a casing having a wall defining a hollow interior;
a plurality of resistive elements received by said wall and in spaced relationship with each other and in common communication with said interior;
a conductive fluid maintained within said hollow interior and in selective contacting engagement with certain of said resistive elements;
circuit means interconnected between said fluid and said resistive elements for producing an output signal upon a change in said contacting engagement of said fluid with said resistive elements; and
alarm means connected to said circuit means for actuation by said output signal.
2 Assignments
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Accused Products
Abstract
An attitude change alarm for securing articles from theft or other undesired movement. The alarm includes a case having a wall which defines a hollow interior. Resistive elements are maintained within the wall in spaced relationship with each other and in common communication with an electrically conductive surface on the outside of the wall. An electrically conductive member is fixedly maintained in the hollow interior in constant contacting engagement with a conductive fluid which makes selective engagement with certain of the resistive elements. When the alarm is moved, a current is transmitted from the conductive coating through the resistive elements, fluid, and member, and is passed to a transformer which gates an SCR into conduction, activating the alarm. Various geometrical configurations of the attitude change alarm are presented, each having specific attributes associated therewith.
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Citations
16 Claims
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1. An attitude change alarm, comprising:
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a casing having a wall defining a hollow interior; a plurality of resistive elements received by said wall and in spaced relationship with each other and in common communication with said interior; a conductive fluid maintained within said hollow interior and in selective contacting engagement with certain of said resistive elements; circuit means interconnected between said fluid and said resistive elements for producing an output signal upon a change in said contacting engagement of said fluid with said resistive elements; and alarm means connected to said circuit means for actuation by said output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An attitude sensor and alarm system, comprising:
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a casing defining a hollow interior; a plurality of resistors maintained within said casing, each having one end thereof extending into said hollow interior; an electrode fixedly maintained within said hollow interior; a conductive fluid movable within said hollow interior and in constant contacting engagement with said electrode and certain of said resistors; and an alarm circuit means interconnected between said electrode and said resistive elements for actuating an alarm upon a change in said contacting engagement between said fluid and said resistors. - View Dependent Claims (14, 15, 16)
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Specification