Patents by Inventor Wayne CAPENER

Wayne CAPENER 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).

  • Active balancing of multiple interleaved piezo pumps
    Patent number: 12662997
    Abstract: A drive circuit for a plurality of piezo-actuated hydraulic pumps for an aircraft, and a hydraulic pump system implementing the same. The drive circuit includes a voltage boost stage that receives a DC input supply voltage and delivers an increased DC output voltage to a high voltage, HV, link point; a plurality of inverter stages coupled in parallel at the HV link point that receive DC voltage from the HV link point and generate an oscillating output voltage for driving a respective piezo-actuated pump; and a control system that controls the output voltage and phase of the inverter stages to drive the plurality of piezo-actuated pumps out of phase. The control system measures the power consumption of each piezo-actuated pump and regulates the output voltage of at least one of the inverter stages to balance the power consumption of each piezo-actuated pump.
    Type: Grant
    Filed: March 8, 2023
    Date of Patent: June 23, 2026
    Assignee: SAFRAN LANDING SYSTEMS UK LTD.
    Inventors: Tom Love, Wayne Capener, Tom Feehally, Peter Wilson, Nathan Sell
  • ACTIVE BALANCING OF MULTIPLE INTERLEAVED PIEZO PUMPS
    Publication number: 20250101974
    Abstract: A drive circuit for a plurality of piezo-actuated hydraulic pumps for an aircraft, and a hydraulic pump system implementing the same. The drive circuit includes a voltage boost stage that receives a DC input supply voltage and delivers an increased DC output voltage to a high voltage, HV, link point; a plurality of inverter stages coupled in parallel at the HV link point that receive DC voltage from the HV link point and generate an oscillating output voltage for driving a respective piezo-actuated pump; and a control system that controls the output voltage and phase of the inverter stages to drive the plurality of piezo-actuated pumps out of phase. The control system measures the power consumption of each piezo-actuated pump and regulates the output voltage of at least one of the inverter stages to balance the power consumption of each piezo-actuated pump.
    Type: Application
    Filed: March 8, 2023
    Publication date: March 27, 2025
    Inventors: Tom LOVE, Wayne CAPENER, Tom FEEHALLY, Peter WILSON, Nathan SELL