Patents by Inventor Charles Richard Elliott

Charles Richard Elliott 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).

  • Device for verifying the electrical output of a microcurrent therapy device
    Patent number: 9999766
    Abstract: A device and method verifies the electrical output of a microcurrent therapy device. The current and/or voltage of an electrical pulse, being supplied to an electrode adapted to contact tissue, is measured by a control unit. The current and/or voltage is supplied by the control unit according to a predefined waveform. Any difference in the current or voltage of the electrical pulse being supplied with respect to the current or voltage of the predefined waveform is detected.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: June 19, 2018
    Assignee: Synapse Electroceutical Limited
    Inventor: Charles Richard Elliott
  • Device for Verifying the Electrical Output of a Microcurrent Therapy Device
    Publication number: 20110279280
    Abstract: A device and method verifies the electrical output of a microcurrent therapy device. The current and/or voltage of an electrical pulse, being supplied to an electrode adapted to contact tissue, is measured by a control unit. The current and/or voltage is supplied by the control unit according to a predefined waveform. Any difference in the current or voltage of the electrical pulse being supplied with respect to the current or voltage of the predefined waveform is detected.
    Type: Application
    Filed: November 20, 2009
    Publication date: November 17, 2011
    Applicant: SYNAPSE MICROCURRENT LIMITED
    Inventor: Charles Richard Elliott
  • Power supply control for power generator
    Patent number: 7880334
    Abstract: A system (100) for connecting a fuel cell stack to an A.C. grid to provide power thereto is disclosed in which a voltage regulated D.C. bus (110) is provided to be coupled to the fuel cell stack, a bidirectional inverter (120) is coupled to the D.C. bus (110), and is to be coupled between the D.C. bus (110) and the A.C. grid. At least one D.C. auxiliary load (130) of the fuel cell stack is provided coupled to the D.C. bus (110). A D.C. to D.C. converter (140) is provided between the fuel cell stack and the D.C. bus (110).
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: February 1, 2011
    Assignee: Ceres Intellectual Property Company, Limited
    Inventors: Christopher John Evans, Charles Richard Elliott, Stephen James Watkins
  • Synchronization of machine and load characteristics
    Patent number: 6936992
    Abstract: An electrical machine is coupled to a load which has a torque profile which varies with angle. The machine is coupled so that the torque ripple of the machine is synchronized with the torque ripple of the load in such a manner as to provide an efficient drive system which can start at any angular position. This allows the size of the electrical machine to be reduced to a point where its average torque may be below the peak requirement of the load.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: August 30, 2005
    Assignee: Switched Reluctance Drives Limited
    Inventors: Charles Richard Elliott, Michael Leo McClelland
  • Current chopping in switched reluctance drive systems
    Patent number: 6639378
    Abstract: A switched reluctance drive is supplied from a power source and has a DC link capacitor. The phases of the machine are controlled by a current chopping controller which, during phase conduction overlap, controls the initiation of chopping in a second phase so as to minimize the current drawn from the capacitor, thereby allowing a reduction in the capacitor rating.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: October 28, 2003
    Assignee: Switched Reluctance Drives Ltd.
    Inventors: Michael James Turner, Charles Richard Elliott
  • Excitation of switched reluctance motors
    Publication number: 20020185990
    Abstract: A switched reluctance drive is supplied from a power source. The phases of the machine are controlled by a current chopping controller which uses an excitation strategy to minimize the supply current drawn for a particular output. The strategy is to allow an outgoing phase to freewheel as long as it produces positive torque while the incoming phase is excited.
    Type: Application
    Filed: May 22, 2002
    Publication date: December 12, 2002
    Applicant: SWITCHED RELUCTANCE DRIVES LIMITED
    Inventors: Charles Richard Elliott, Ian Jordison
  • Transient voltage suppression
    Publication number: 20020075621
    Abstract: A switched reluctance drive is supplied from a DC bus which may have transient over-voltage disturbances on it. The transients are greatly reduced in magnitude and the switches in the drive are protected by switching on all phases of the machine together when the DC bus voltage rises above a predetermined threshold.
    Type: Application
    Filed: December 17, 2001
    Publication date: June 20, 2002
    Applicant: SWITCHED RELUCTANCE DRIVES LIMITED
    Inventor: Charles Richard Elliott
  • Current chopping in switched reluctance drive systems
    Publication number: 20020063547
    Abstract: A switched reluctance drive is supplied from a power source and has a DC link capacitor. The phases of the machine are controlled by a current chopping controller which, during phase conduction overlap, controls the initiation of chopping in a second phase so as to minimize the current drawn from the capacitor, thereby allowing a reduction in the capacitor rating.
    Type: Application
    Filed: November 19, 2001
    Publication date: May 30, 2002
    Applicant: Switched Reluctance Drives Limited
    Inventors: Michael James Turner, Charles Richard Elliott
  • Hysteresis current controller for a reluctance machine
    Patent number: 5998945
    Abstract: A hysteresis current controller includes a hysteresis current control device which has an adjustable hysteresis band. A feedback signal indicative of current in the load is compared with a current demand signal to produce an error signal which is received by the hysteresis control device. The switching output of the hysteresis control device is monitored to derive a signal indicative of its frequency which is used in a control loop to vary the hysteresis band to maintain the switching frequency output substantially constant.
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: December 7, 1999
    Assignee: Switched Reluctance Drives Limited
    Inventor: Charles Richard Elliott
  • On-off controller
    Patent number: 5926011
    Abstract: In an on-off current controller for an electrical machine, such as a switched reluctance motor, a delay is created in the switch-off of the current switches after the current reaches the demanded level. The delay causes the current to rise further above the demanded level, but reduces the error between the average current and the demanded level.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: July 20, 1999
    Assignee: Switched Reluctance Drives Limited
    Inventor: Charles Richard Elliott