Electrical appliance control
November 12, 2005. 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 3810096 3818481 Hermetically sealed keyboard type assembly with elastomeric electrical connecting link between switch and component modules Digital two-wire irrigation control system with feedback Encoded electrical control systems Appliance control Remote AC power control with control pulses at the zero crossing of the AC wave Appliance control system System for power supply to and switching of a number of electrical appliances System for selectively addressing electrical control signals from a control unit to a plurality of remote units Patent #: 4540890 InventorAssigneeApplicationNo. 06/796531 filed on 11/12/1985US Classes:700/19, Plural controlled systems, mechanisms, or elements200/5A, With independent operators340/310.12Modulation techniqueExaminersPrimary: Smith, JerryAssistant: Grossman, Jon D. Attorney, Agent or FirmInternational ClassesG06F 3/023 (20060101)H02J 13/00 (20060101) Foreign Application Priority Data1981-10-26 GBAbstractA transmitter, for electrical appliance control by transmitting digital control signals on a power main, comprises two releasably connected parts, a first part comprising m actuators to initiate the generation of m control signals, and the second part containing a generator for the control signals, and a selector for selecting m out of n control signals. The selector is hidden by the first part when the parts are joined together and may be adjusted to select different groups of m control signals from the n possible signals. All n control signals can be produced, in groups of up to m signals for each condition of the selector. A monitor is also provided to monitor the main in order to achieve transmitter queueing dependent upon the selector settings at the transmitters. | |
