Patents by Inventor Eric P Willmot

Eric P Willmot 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).

  • Pitch transfer gear and transmissions
    Patent number: 7028572
    Abstract: A pitch transfer gear transmission which enables drive to be transmitted from a gear of having one modulus (42) to a gear having another modulus (46) includes at least two gears (12,16) which have a different number of teeth and which are able to rotate relative to one another, so that the teeth of the two gears (12,16) can form a gear modulus of a first value at one part of the periphery of the gear, and a gear modulus of another value at another part of the periphery of the gear. Continuously variable transmissions are formed by providing an input or output gear (42,46) which has a modulus which varies along the length of the gear. Pitch transfer gear assembly (30) engages with the input or output gear (42,46), and is moveable by a mechanism (59) along the length of the gear changing modulus, so as to set the drive ratio of the transmission.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: April 18, 2006
    Assignee: Aimbridge Pty Ltd.
    Inventors: Eric P Willmot, David Ellis
  • Pitch transfer gear and transmissions
    Publication number: 20040079183
    Abstract: A pitch transfer gear transmission which enables drive to be transmitted from a gear of having one modulus (42) to a gear having another modulus (46) includes at least two gears (12,16) which have a different number of teeth and which are able to rotate relative to one another, so that the teeth of the two gears (12,16) can form a gear modulus of a first value at one part of the periphery of the gear, and a gear modulus of another value at another part of the periphery of the gear. Continuously variable transmissions are formed by providing an input or output gear (42,46) which has a modulus which varies along the length of the gear. Pitch transfer gear assembly (30) engages with the input or output gear (42,46), and is moveable by a mechanism (59) along the length of the gear changing modulus, so as to set the drive ratio of the transmission.
    Type: Application
    Filed: August 21, 2003
    Publication date: April 29, 2004
    Inventors: Eric P Willmot, David Ellis