Patents by Inventor Stephen Douglas Tetlow

Stephen Douglas Tetlow 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: 7675197
    Abstract: Apparatus is disclosed for allowing an inductive power distribution system pick-up to be located at an extended distance from the system primary conductive path. The apparatus has an elongate housing (40) which has a first coil (14) at one end to receive energy from a magnetic field associated with the primary conductive path. A second coil (16) is provided at the other end of the housing and is electrically connected to the first coil to produce a magnetic field for the supply of electrical energy to the pick-up. The circuit formed by the two coils is tuned to have a desired resonant frequency.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: March 9, 2010
    Assignee: Auckland Uniservices Limited
    Inventor: Stephen Douglas Tetlow
  • Publication number: 20090243799
    Abstract: A return communication system and method for an Inductive Power Transfer (IPT) System allows a pick-up device (3) to receive an instruction and supply a load (36) in such a way that a predetermined variation occurs in current in the primary conductive path (2) of the system The variation may be detected and decoded to determine a response from the pick-up to the instruction.
    Type: Application
    Filed: June 22, 2006
    Publication date: October 1, 2009
    Applicant: Traffic Electronics, Ltd.
    Inventor: Stephen Douglas Tetlow