Patents by Inventor Duncan HELLMERS

Duncan HELLMERS 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).

  • Publication number: 20210177207
    Abstract: There is disclosed herein a toaster (10) including: a housing (12); a pair of opposing food guards (24a, 24b) located within the housing (12) and defining a toasting cavity (25a, 25b) for receiving foodstuff to be toasted; a pair of heating elements (28) located within the housing (12), each heating element (28) being located on a respective side of the pair of food guards (24a, 24b), wherein each food guard (24a, 24b) is spaced from the corresponding heating element (28) by a clearance (81); and wherein each food guard (24a, 24b) has an upwardly-extending portion (75c, 75d) that extends upwardly to a portion (75a, 75b) that extends transversely from the upwardly-extending portion so as to extend above the corresponding heating element (28), the transversely-extending portion (75a, 75b) of each food guard (24a, 24b) projecting away from the opposing food guard (24a, 24b).
    Type: Application
    Filed: June 28, 2019
    Publication date: June 17, 2021
    Inventors: Johnson THIE, Duncan HELLMERS, Stephen John MCCLEAN, Ali TOFAILI, Alastair DOVER, Sathia THANGAMUTHU, Gerard WHITE, Eugenie BARNET, Tee SMITH, Sam WALKER, Tristan BREGA, James MORTON, Richard HOARE, Con PSAROLOGOS, Philip MCKNIGHT
  • Publication number: 20210127464
    Abstract: An induction heating circuit for an appliance, the induction heating circuit comprising: an AC power supply with an AC monitoring output connected to the active line of the AC power supply, the AC monitoring output providing an indication of current being drawn from the AC power supply; a control circuit comprising at least one processor and a semiconductor current sensor, the semiconductor current sensor arranged to i) detect the current being drawn from the AC power supply and ii) output an output voltage based on the detected current; and an induction driving circuit for driving an inductor of the appliance comprising a semiconductor switch, wherein the semiconductor switch is controlled by the processor based on, at least, the output voltage.
    Type: Application
    Filed: June 28, 2019
    Publication date: April 29, 2021
    Inventors: Johnson THIE, Duncan HELLMERS, Stephen John MCCLEAN