Programmable movement analyzer with a plurality of mercury switches
February 8, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMotion responsive alarm system Method and apparatus for measuring and treating hyperactivity in human beings Vehicle antitheft alarm Appliance anti-theft and protection circuitry Device for locating persons Alarm device responsive to movement of protected object, power source condition and alarm ground path Audio signaling device and method Motion sensing system Alarm device Motion alarm system Patent #: 4450437 InventorApplicationNo. 153162 filed on 02/08/1988US Classes:340/573.1, Human or animal200/61.47, Conducting fluid type340/689, Tilt702/150Orientation or positionExaminersPrimary: Orsino, Joseph A.Assistant: Jackson, Jill Attorney, Agent or FirmInternational ClassG08B 023/00AbstractAn alert device is provided which initiates an alarm if a person wearing the device ceases normal movement. The device includes a movement sensor having at least one mercury switch which generates a signal when the mercury shifts in response to movement. The device also includes a microcomputer to receive the mercury switch input signals--the microcomputer being programmed to distinguish between inputs indicative of normal wearer movement and inputs which may represent a wearer in duress. Preferably, the motion sensor provides three mercury switches oriented to sense movement in three normal planes.Other References
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