Patents by Inventor Andrew Dames

Andrew Dames 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).

  • Patent number: 10132839
    Abstract: An electricity meter comprises a conductor having a substantially planar surface; and a carrier for carrying a sensor component for enabling detection of current flowing in the conductor, wherein the carrier is spaced from the planar surface of the conductor by an arrangement of at least three spacing elements. The spacing elements may project from the carrier or from the substantially planar surface of the conductor.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: November 20, 2018
    Assignee: SENTEC LTD
    Inventors: Andrew Dames, Robert Davidson, Edward Colby
  • Patent number: 10072596
    Abstract: A control unit (2) for a fuel injector (3) comprising a solenoid actuator (31) having an armature (33), the control unit configured to drive a current through an electromagnet coil (34) of the solenoid actuator in a voltage mode during at least a portion of an injection cycle.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: September 11, 2018
    Assignee: SENTEC LTD
    Inventors: Andrew Dames, Hilary Meanwell, Jerome Dilley, James Evett, Christian Wehrenfennig, Alice Burrell
  • Publication number: 20180023527
    Abstract: A solenoid-based fuel injector is described. The fuel injector comprises a tubular body (48) comprising a magnetic material and an armature (16) disposed inside the tubular body. The tubular body has an integrally-formed, inwardly-projecting shelf (52) configured to provide a pole piece.
    Type: Application
    Filed: January 20, 2016
    Publication date: January 25, 2018
    Inventors: Andrew Dames, Hilary Meanwell, Robert Davidson, Christian Wehrenfennig, James Evett
  • Publication number: 20170330666
    Abstract: A solenoid actuator is described. The solenoid actuator comprises an armature, pole piece(s), electromagnet coil(s) arranged, in response to energisation, to cause travel of the armature between first and second positions along a direction of travel, permanent magnet(s) positioned and orientated for latching the armature in at least the first position when the armature is in the first position and spring(s) arranged to bias the armature. The solenoid actuator can be operated to provide partial lift.
    Type: Application
    Filed: May 30, 2017
    Publication date: November 16, 2017
    Inventors: Andrew DAMES, James EVETT, Matthew STORKEY
  • Patent number: 9689361
    Abstract: A solenoid actuator is described. The solenoid actuator comprises an armature, pole piece(s), electromagnet coil(s) arranged, in response to energization, to cause travel of the armature between first and second positions along a direction of travel, permanent magnet(s) positioned and orientated for latching the armature in at least the first position when the armature is in the first position and spring(s) arranged to bias the armature. The solenoid actuator can be operated to provide partial lift.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: June 27, 2017
    Assignee: SENTEC LTD.
    Inventor: Andrew Dames
  • Publication number: 20170169926
    Abstract: A short travel solenoid actuator (44) is disclosed which comprises at least one pole piece (47, 48), an armature (51), an electromagnet coil (46) arranged, in response to energisation, to actuate the armature between first and second positions. A permanent magnet (52) is positioned and orientated so as to latch the armature in the first and second positions when the armature is in the first and second positions respectively. A spring (53) is arranged to bias the armature.
    Type: Application
    Filed: December 26, 2016
    Publication date: June 15, 2017
    Inventor: Andrew Dames
  • Patent number: 9530551
    Abstract: A short travel solenoid actuator (44) is disclosed which comprises at least one pole piece (47, 48), an armature (51), an electromagnet coil (46) arranged, in response to energization, to actuate the armature between first and second positions. A permanent magnet (52) is positioned and orientated so as to latch the armature in the first and second positions when the armature is in the first and second positions respectively. A spring (53) is arranged to bias the armature.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: December 27, 2016
    Assignee: SENTEC LTD
    Inventor: Andrew Dames
  • Publication number: 20160281624
    Abstract: A control unit (2) for a fuel injector (3) comprising a solenoid actuator (31) having an armature (33), the control unit configured to drive a current through an electromagnet coil (34) of the solenoid actuator in a voltage mode during at least a portion of an injection cycle.
    Type: Application
    Filed: November 17, 2014
    Publication date: September 29, 2016
    Inventors: Andrew Dames, Hilary Meanwell, Jerome Dilley, James Evett, Christian Wehrenfennig, Alice Burrell
  • Publication number: 20160084886
    Abstract: An electricity meter comprises a conductor having a substantially planar surface; and a carrier for carrying a sensor component for enabling detection of current flowing in the conductor, wherein the carrier is spaced from the planar surface of the conductor by an arrangement of at least three spacing elements. The spacing elements may project from the carrier or from the substantially planar surface of the conductor.
    Type: Application
    Filed: May 15, 2014
    Publication date: March 24, 2016
    Inventors: Andrew Dames, Robert Davidson, Edward Colby
  • Patent number: 8912683
    Abstract: A smart responsive electrical load (10) is operatively connectable to an electricity supply network (20). The smart responsive electrical load (10) comprises an electrical power-consuming device (30) and a control arrangement (40) for controlling a supply of electrical power from the network (20) to the device (30). The control arrangement (60, 110, 150, 160, 170) is operable to impose a variable time delay (tp) before supplying electrical power to the device (30) after a request for power to be provided to the device (30). The variable time delay (tp) is a function of a state of the network (20), for example its frequency (f) and/or its voltage amplitude (V). Optionally, the device (30) is a battery charger, for example for use with a rechargeable electric vehicle. Beneficially, the smart responsive load (10) is supplied with electrical power from a population of micro-generation devices (500) operable to provide supply network response.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: December 16, 2014
    Assignee: Open Energi Limited
    Inventors: Andrew Dames, Kimon Roussopoulos, Tim Norris, Andrew Howe
  • Patent number: 8890509
    Abstract: A sensor for use in detecting a time-varying current in a conductor (106) comprises plural sets of two oppositely-configured sensor elements (104-1 . . . 104-6) arranged around a sensing volume having a central axis, the sensor elements (104-1A, 104-1B) of each set being provided substantially in a common plane that does not intersect the central axis, and each set having a different common plane, the sensor elements of each set being arranged such that a normal (N) of their common plane at a point between central parts of sensor elements lies on a plane (P) that is radial to the central axis of the sensing volume.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: November 18, 2014
    Assignee: Sentec Ltd.
    Inventors: Andrew Dames, Matthew Storkey, Edward Colby, Oliver Burstall
  • Patent number: 8791694
    Abstract: A current sensor arrangement comprises plural sensor elements arranged around a center point, each of the sensor elements having a plane of zero sensitivity to uniform magnetic fields. A first one (202) of the sensor elements has a first angular separation (X1) relative to the center point from a second, adjacent sensor element (204) and a second angular separation (X2) relative to the center point from a third, adjacent sensor element (206). The first angular separation is less than the second angular separation. An intercept (I13) of the planes of the first and third sensor elements is located outside a triangle formed by the center point and the first and third sensor elements and an intercept (I12) of the planes of the first and second sensor elements is located inside a triangle formed by the center point and the first and second sensor elements.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: July 29, 2014
    Assignee: Sentec Ltd.
    Inventors: Matthew Storkey, Andrew Dames
  • Publication number: 20140110508
    Abstract: A solenoid actuator is described. The solenoid actuator comprises an armature, pole piece(s), electromagnet coil(s) arranged, in response to energisation, to cause travel of the armature between first and second positions along a direction of travel, permanent magnet(s) positioned and orientated for latching the armature in at least the first position when the armature is in the first position and spring(s) arranged to bias the armature. The solenoid actuator can be operated to provide partial lift.
    Type: Application
    Filed: June 14, 2012
    Publication date: April 24, 2014
    Applicant: SENTEC LTD
    Inventors: Andrew Dames, James Evett, Matthew Storkey
  • Publication number: 20120261499
    Abstract: A short travel solenoid actuator (44) is disclosed which comprises at least one pole piece (47, 48), an armature (51), an electromagnet coil (46) arranged, in response to energisation, to actuate the armature between first and second positions. A permanent magnet (52) is positioned and orientated so as to latch the armature in the first and second positions when the armature is in the first and second positions respectively. A spring (53) is arranged to bias the armature.
    Type: Application
    Filed: November 5, 2010
    Publication date: October 18, 2012
    Inventor: Andrew Dames
  • Patent number: 8279027
    Abstract: A magnetic latching actuator operable to control the movement of at least a first contact and second contact between a closed position in which the contacts physically engage each other and an open position in which the contacts are spaced from each other. The magnetic latching actuator includes first and second stationary permanent magnets oriented such that the first magnetic field created by the first magnet and the second magnetic field created by the second magnet are in opposite directions. An actuation coil surrounds both the first and second magnets. Current is supplied to the actuation coil in a first direction to create a first magnetic field or a second direction to create a second actuation magnetic field opposite the first actuation magnetic field. A yoke is movable relative to the first and second magnets to cause the first and second contacts to move between the open and closed positions.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: October 2, 2012
    Assignee: Sensus Spectrum LLC
    Inventors: Michael R. Brown, William R. Mazza, Jr., Oliver Burstall, Andrew Dames
  • Publication number: 20120146620
    Abstract: A sensor for use in detecting a time-varying current in a conductor (106) comprises plural sets of two oppositely-configured sensor elements (104-1 . . . 104-6) arranged around a sensing volume having a central axis, the sensor elements (104-1A, 104-1B) of each set being provided substantially in a common plane that does not intersect the central axis, and each set having a different common plane, the sensor elements of each set being arranged such that a normal (N) of their common plane at a point between central parts of sensor elements lies on a plane (P) that is radial to the central axis of the sensing volume.
    Type: Application
    Filed: August 16, 2010
    Publication date: June 14, 2012
    Applicant: SENTEC LTD
    Inventors: Andrew Dames, Matthew Storkey, Edward Colby, Oliver Burstall
  • Publication number: 20120139534
    Abstract: A current sensor arrangement comprises plural sensor elements arranged around a centre point, each of the sensor elements having a plane of zero sensitivity to uniform magnetic fields. A first one (202) of the sensor elements has a first angular separation (X1) relative to the centre point from a second, adjacent sensor element (204) and a second angular separation (X2) relative to the centre point from a third, adjacent sensor element (206). The first angular separation is less than the second angular separation. An intercept (I13) of the planes of the first and third sensor elements is located outside a triangle formed by the centre point and the first and third sensor elements and an intercept (I12) of the planes of the first and second sensor elements is located inside a triangle formed by the centre point and the first and second sensor elements.
    Type: Application
    Filed: August 16, 2010
    Publication date: June 7, 2012
    Applicant: SENTEC LTD
    Inventors: Matthew Storkey, Andrew Dames
  • Publication number: 20110198922
    Abstract: A smart responsive electrical load (10) is operatively connectable to an electricity supply network (20). The smart responsive electrical load (10) comprises an electrical power-consuming device (30) and a control arrangement (40) for controlling a supply of electrical power from the network (20) to the device (30). The control arrangement (60, 110, 150, 160, 170) is operable to impose a variable time delay (tp) before supplying electrical power to the device (30) after a request for power to be provided to the device (30). The variable time delay (tp) is a function of a state of the network (20), for example its frequency (f) and/or its voltage amplitude (V). Optionally, the device (30) is a battery charger, for example for use with a rechargeable electric vehicle. Beneficially, the smart responsive load (10) is supplied with electrical power from a population of micro-generation devices (500) operable to provide supply network response.
    Type: Application
    Filed: September 18, 2009
    Publication date: August 18, 2011
    Inventors: Andrew Dames, Kimon Roussopoulos, Tim Norris
  • Publication number: 20100283561
    Abstract: A magnetic latching actuator operable to control the movement of at least a first contact and second contact between a closed position in which the contacts physically engage each other and an open position in which the contacts are spaced from each other. The magnetic latching actuator includes first and second stationary permanent magnets oriented such that the first magnetic field created by the first magnet and the second magnetic field created by the second magnet are in opposite directions. An actuation coil surrounds both the first and second magnets. Current is supplied to the actuation coil in a first direction to create a first magnetic field or a second direction to create a second actuation magnetic field opposite the first actuation magnetic field. A yoke is movable relative to the first and second magnets to cause the first and second contacts to move between the open and closed positions.
    Type: Application
    Filed: May 8, 2009
    Publication date: November 11, 2010
    Applicant: M&FC HOLDING, LLC
    Inventors: Michael R. Brown, William R. Mazza, JR., Oliver Burstall, Andrew Dames
  • Publication number: 20070228833
    Abstract: An inductive power transfer system comprises a primary unit 10, having a primary coil 12 and an electrical drive unit 14 which applies electrical drive signals to the primary coil so as to generate an electromagnetic field. The system also comprises at least one secondary device 30, separable from the primary unit and having a secondary coil 32 which couples with the field when the secondary device is in proximity to the primary unit. A control unit 16 causes a circuit including said primary coil to operate, during a measurement period, in an undriven resonating condition. In this condition the application of the drive signals to the primary coil by the electrical drive unit is suspended so that energy stored in the circuit decays over the course of the period. A decay measurement unit 18 takes one or more measures of such energy decay during the measurement period.
    Type: Application
    Filed: May 11, 2005
    Publication date: October 4, 2007
    Inventors: Michael Stevens, Alexander Knill, John Dunton, Andrew Dames, Kevin Lamb