Tilt switch
August 20, 2007. 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 References 3614763 3866204 Electric power interrupting apparatus Intrusion alarm control system Vocalizing apparatus Audio signaling device and method Safety ski binding Electronic non-use power interruption safety device for an electric flat-iron Apparatus for detecting unauthorized egress by patient from position of confinement Indicating and control apparatus for a portable heating appliance InventorsAssigneeApplicationNo. 07/087333 filed on 08/20/1987US Classes:307/116, Condition responsive307/117, Light, heat, vibratory or radiant energy340/573.1Human or animalExaminersPrimary: Shoop, William M. Jr.Assistant: Ip, Paul Attorney, Agent or FirmInternational ClassesG08B 21/18 (20060101)G08B 21/00 (20060101) B61L 15/00 (20060101) B61L 15/02 (20060101) AbstractA gravity operated switching circuit, having particular application in end of train equipment, allows the microprocessor circuit board in the equipment to be turned off. The circuit turns the power off when the equipment is laid on its side after a predetermined time constant, and when the equipment is again mounted in an upright position, the power is turned on after a different predetermined time constant. A modification of the basic circuit requires a reset button to be manually pressed to restore power after the equipment is again mounted in an upright position. | |
