Patents by Inventor David Llewellyn

David Llewellyn 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: 10263510
    Abstract: Various improvements are provided to resonant DC/DC and AC/DC converter circuit. The improvements are of particular interest for LLC circuits. Some examples relate to self-oscillating circuit and others relate to converter circuits with frequency control, for example for power factor correction, driven by an oscillator.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: April 16, 2019
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: William Peter Mechtildis Marie Jans, David Llewellyn John, Reinhold Elferich, Johannes Hubertus Gerardus Op Het Veld
  • Patent number: 10245488
    Abstract: A softball or baseball bat is provided. The bat can comprise a handle that has a proximate end and a distal end and a barrel that has a hollow portion. The bat can comprise first damping section that comprises a first material, and the first damping section can be at least partially interposed between a portion of the handle and a portion of an inner wall of the barrel. The bat can comprise a second damping section that can comprise a second material, and the second damping section can be at least partially interposed between a portion of the handle and a portion of the inner wall of the barrel. At least a portion of the first damping section or the second damping section can prevent the handle from directly contacting the barrel when the bat is at rest.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: April 2, 2019
    Assignee: MIZUNO CORPORATION
    Inventors: Brendan Kays, Yohei Yamashita, David Llewellyn
  • Publication number: 20190089254
    Abstract: A half bridge resonant converter comprises a half bridge inverter having a high side switch and a low side switch with an output defined from a node between the high side switch and the low side switch. The output connects to a resonant circuit. There are separate control circuits for generating the gate drive signals for controlling the switching of the high side switch and low side switch, in dependence on an electrical feedback parameter, each with different reference voltage supplies.
    Type: Application
    Filed: April 11, 2017
    Publication date: March 21, 2019
    Inventors: Johannes Hubertus Gerardus OP HET VELD, David Llewellyn JOHN, Reinhold ELFERICH, William Peter Mechtildis Marie JANS
  • Publication number: 20190081565
    Abstract: Various improvements are provided to resonant DC/DC and AC/DC converter circuit. The improvements are of particular interest for LLC circuits. Some examples relate to self-oscillating circuit and others relate to converter circuits with frequency control, for example for power factor correction, driven by an oscillator.
    Type: Application
    Filed: February 7, 2017
    Publication date: March 14, 2019
    Inventors: William Peter Mechtildis Maie JANS, David Llewellyn JOHN, Reinhold ELFERICH, Johannes, Hubertus OP HET VELD
  • Publication number: 20190058393
    Abstract: An AC/DC PFC converter comprises an LLC PFC pre-regulator and a DC/DC converter output stage. The output stage has a feedback unit adapted to provide a feedback signal (in addition to the conventional feedback of the bus voltage error) to the control circuit of the PFC pre-regulator for modulating the controlled output voltage of the PFC pre-regulator in dependence on the output power and/or the input current and voltage. In this way, the total harmonic distortion of the input of the converter can be reduced by controlling the gate switching in the PFC pre-regulator.
    Type: Application
    Filed: March 23, 2017
    Publication date: February 21, 2019
    Applicant: Philips Lighting Holding B.V.
    Inventors: Reinhold ELFERICH, David Llewellyn JOHN
  • Publication number: 20190044434
    Abstract: Various improvements are provided to resonant DC/DC and AC/DC converter circuit. The improvements are of particular interest for LLC circuits. Some examples relate to self-oscillating circuit and others relate to converter circuits with frequency control, for example for power factor correction, driven by an oscillator.
    Type: Application
    Filed: February 6, 2017
    Publication date: February 7, 2019
    Inventors: Reinhold ELFERICH, David Llewellyn JOHN, William Peter Mechtildis Marie JANS, Johannes Hubertus Gerardus OP HET VELD
  • Publication number: 20190044433
    Abstract: Various improvements are provided to resonant DC/DC and AC/DC converter circuit. The improvements are of particular interest for LLC circuits. Some examples relate to self-oscillating circuit and others relate to converter circuits with frequency control, for example for power factor correction, driven by an oscillator.
    Type: Application
    Filed: February 8, 2017
    Publication date: February 7, 2019
    Inventors: Reinhold ELFERICH, David Llewellyn JOHN, William Peter Mechtildis Marie JANS, Johannes Hubertus Gerardus OP HET VELD
  • Publication number: 20190044432
    Abstract: Various improvements are provided to resonant DC/DC and AC/DC converter circuit. The improvements are of particular interest for LLC circuits. Some examples relate to self-oscillating circuit and others relate to converter circuits with frequency control, for example for power factor correction, driven by an oscillator.
    Type: Application
    Filed: February 6, 2017
    Publication date: February 7, 2019
    Inventors: Johannes Hubertus Gerardus OP HET VELD, David Llewellyn JOHN, Reinhold ELFERICH, William Peter Mechtildis Marie JANS
  • Patent number: 10179214
    Abstract: The invention relates to a device for injection of a product into an injection site. The device including a needle shield for protection of a needle prior to use of the device; a housing; and a deshielder for removing the needle shield from the device. The deshielder is coupled to the needle shield and mounted on the housing in a separable manner. The deshielder may include tamper evidence features that are activated by the removal of at least one part of said deshielder. At least one part of the deshielder may be configured to be removed from the housing by exerting a force equal or less to 30 N.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: January 15, 2019
    Assignee: Becton Dickinson France
    Inventors: David Llewellyn-Hyde, Vernon Rich, Herve Abry, Frederic Perot, Jerome Blanc, Lionel Maritan
  • Publication number: 20190006940
    Abstract: Various improvements are provided to resonant DC/DC and AC/DC converter circuit. The improvements are of particular interest for LLC circuits. Some examples relate to self-oscillating circuit and others relate to converter circuits with frequency control, for example for power factor correction, driven by an oscillator.
    Type: Application
    Filed: February 8, 2017
    Publication date: January 3, 2019
    Inventors: William Peter Mechtildis Marie JANS, David Llewellyn JOHN, Reinhold ELFERICH, Johannes Hubertus Gerardus OP HET VELD
  • Patent number: 10159880
    Abstract: An adjustable golf club head and weight structure is disclosed. The adjustable golf club head can include a crown, a toe, a hosel, and a sole. The sole of the club head may have one or more tracks located thereon. Each of the one or more tracks can have one or more weights secured therein. Each of the one or more weights can include an upper weight portion, and a lower weight portion. A screw can be positioned to adjoin the upper weight portion and the lower weight portion. The weight can also include a clip fastened to the screw such that the clip retains the screw within bores located in the upper and lower weight portions. In order to prevent the upper and lower weight portions from rotating with respect to one another, the weight can include an alignment portion and an alignment receptacle.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: December 25, 2018
    Assignee: MIZUNO CORPORATION
    Inventors: Takayuki Mine, Kei Tsuji, David Llewellyn
  • Patent number: 9961728
    Abstract: A driver device (10) for driving a load (22), in particular for driving an LED unit comprising one or more LEDs is presented. The driver device comprises input terminals (12, 14) for connecting the driver device to an electrical power supply (16) for receiving a variable input voltage (V10) from the electrical power supply, a converter unit (25) for converting the input voltage (V10) to an output voltage (V12) including a resonant converter (40) and a switch unit (26), wherein the switch unit is adapted to provide a chopped voltage of the input voltage as a drive voltage (V16) to the resonant converter, and a control unit (34) connected to the switch unit for controlling a pulse frequency (fP) of the chopped voltage, wherein the control unit is adapted to control an input current (I10) drawn from the electrical power supply by controlling the pulse frequency of the chopped voltage on the basis of a measured value of the variable input voltage.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: May 1, 2018
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Reinhold Elferich, David Llewellyn John
  • Publication number: 20180056151
    Abstract: An iron golf club head is disclosed. The iron golf club head can include a hosel portion, a heel portion, a toe portion, a face portion, and a sole portion all forged from a single piece of steel. The iron golf club head can further include a slot cut in the forged club behind the face portion between the heel portion and the toe portion. The slot can have a sole opening and a cavity opening, and a plug can be located in the sole opening.
    Type: Application
    Filed: November 7, 2017
    Publication date: March 1, 2018
    Inventors: Kazuhiro Doi, Tetsuya Kanayama, David Llewellyn, Chris Voshall
  • Patent number: 9882506
    Abstract: A multiple inductive component (100) comprises:—a cylindrical drum core component (120) with at least two axially spaced circumferential grooves (131, 132) in its cylindrical outer surface (121), a separation disc portion (111) between said two circumferential grooves and two outer disc portions (112, 113) at the sides of the said two circumferential grooves, respectively, directed away from the separation disc portion;—at least one first winding (141) arranged in a first one (131) of said grooves;—at least one second winding (142) arranged in a second one (132) of said grooves;—a cylindrical shell core component (150) arranged coaxially around the cylindrical drum core component;—two outer air gaps (162, 163) between the cylindrical shell core component and said two outer disc portions, respectively. The separation disc portion is magnetically short circuited with the cylindrical shell core component.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: January 30, 2018
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Bernd Ackermann, Reinhold Elferich, David Llewellyn John
  • Publication number: 20170257018
    Abstract: An electrical component (10), an electric circuit (40) with the component (10), and a method of operating the electrical circuit (40) are described. The electrical component (10) comprises at least one main winding (16, 18) comprised of a plurality of conductor wire turns wound on a bobbin (14). In order to achieve simple construction of an auxiliary winding (54), at least one turn of a conductor trace (34) is provided on a surface of the bobbin (14) forming the auxiliary winding (54). In an electrical circuit (40) an integrated circuit element (46) is supplied with electrical operating power from the auxiliary winding (34).
    Type: Application
    Filed: August 10, 2015
    Publication date: September 7, 2017
    Applicant: PHILIPS LIGHTING HOLDING B.V.
    Inventors: BERND ACKERMANN, REINHOLD ELFERICH, DAVID LLEWELLYN JOHN
  • Publication number: 20170223792
    Abstract: A driver device (10) for driving a load (22), in particular for driving an LED unit comprising one or more LEDs is presented. The driver device comprises input terminals (12, 14) for connecting the driver device to an electrical power supply (16) for receiving a variable input voltage (V10) from the electrical power supply, a converter unit (25) for converting the input voltage (V10) to an output voltage (V12) including a resonant converter (40) and a switch unit (26), wherein the switch unit is adapted to provide a chopped voltage of the input voltage as a drive voltage (V16) to the resonant converter, and a control unit (34) connected to the switch unit for controlling a pulse frequency (fP) of the chopped voltage, wherein the control unit is adapted to control an input current (I10) drawn from the electrical power supply by controlling the pulse frequency of the chopped voltage on the basis of a measured value of the variable input voltage.
    Type: Application
    Filed: July 27, 2015
    Publication date: August 3, 2017
    Inventors: REINHOLD ELFERICH, DAVID LLEWELLYN JOHN
  • Patent number: 9597563
    Abstract: An adjustable golf club is disclosed. The adjustable golf club can include a club head having a sole. The sole of the club head may have two or more tracks located thereon. Each track can be configured to receive at least one weight. The two or more tracks may be three tracks. The three tracks can comprise an elongated central track, a first short track disposed on a first side of the elongated central track, and a second short track disposed on the second side of the elongated central track.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: March 21, 2017
    Assignee: Mizuno USA, Inc.
    Inventors: Chris Voshall, David Llewellyn, Kazuya Ishida, Tetsuya Kanayama, Kei Tsuji
  • Patent number: 9595865
    Abstract: In various examples, a converter unit for converting an input voltage to an output voltage is disclosed. The converter includes input terminals for connecting the converter unit to a voltage supply and for receiving the input voltage from the voltage supply and output terminals for connecting the converter unit to a load for driving the load. A controllable switch is connected to an inductor. The converter unit further includes a current detector for detecting a current of the inductor, a voltage slope detector for detecting a slope of a voltage measured across the controllable switch, and a control unit for controlling the controllable switch on the basis of the inductor current and the voltage slope.
    Type: Grant
    Filed: August 30, 2014
    Date of Patent: March 14, 2017
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: David Llewellyn John, Peter Blanken, Reinhold Elferich
  • Publication number: 20170036076
    Abstract: An iron golf club head is disclosed. The iron golf club head can include a hosel portion, a heel portion, a toe portion, a face portion, and a sole portion all forged from a single piece of steel. The iron golf club head can further include a slot cut in the forged club behind the face portion between the heel portion and the toe portion. The slot can have a sole opening and a cavity opening, and a plug can be located in the sole opening.
    Type: Application
    Filed: August 7, 2015
    Publication date: February 9, 2017
    Inventors: Kazuhiro Doi, Tetsuya Kanayama, David Llewellyn, Chris Voshall
  • Patent number: D784527
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: April 18, 2017
    Assignee: Becton Dickinson France
    Inventors: David Llewellyn-Hyde, Guillaume Grunhut