Patents by Inventor William K. Penniston

William K. Penniston has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Low level voltage programmable logic control
    Patent number: 8422186
    Abstract: An improved programmable logic control device for monitoring the current of a circuit and for signalling a circuit control device, the programmable logic control device including electrical power circuitry for activating the circuit control device and electrical circuitry for monitoring the current in the electrical circuit, the electrical circuitry including: adjustable electrical signal input circuitry to monitor the electrical current in the circuit; adjustable pick-up circuitry for adjusting the level of the current monitored in the electrical circuit, the pick-up circuitry having a thermister means for improved stabilization; adjustable time circuitry to command the electrical power circuitry to activate the circuit control device when the electrical current in the electrical circuit reaches the selected level and time duration, the time circuitry having an increased time duration to minimize nuisance tripping; and a zener diode in reverse mode for controlling the level of voltage applied to the adjustab
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: April 16, 2013
    Inventor: William K. Penniston
  • LOW LEVEL VOLTAGE PROGRAMMABLE LOGIC CONTROL
    Publication number: 20080218924
    Abstract: An improved programmable logic control device for monitoring the current of a circuit and for signalling a circuit control device, the programmable logic control device including electrical power circuitry for activating the circuit control device and electrical circuitry for monitoring the current in the electrical circuit, the electrical circuitry including: adjustable electrical signal input circuitry to monitor the electrical current in the circuit; adjustable pick-up circuitry for adjusting the level of the current monitored in the electrical circuit, the pick-up circuitry having a thermister means for improved stabilization; adjustable time circuitry to command the electrical power circuitry to activate the circuit control device when the electrical current in the electrical circuit reaches the selected level and time duration, the time circuitry having an increased time duration to minimize nuisance tripping; and a zener diode in reverse mode for controlling the level of voltage applied to the adjustab
    Type: Application
    Filed: March 6, 2007
    Publication date: September 11, 2008
    Inventor: William K. Penniston