Patents by Inventor Nigel David Hardy

Nigel David Hardy 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: 20110169583
    Abstract: An oscillator includes resonator portions each mounted to a substrate via one or more mountings at one end and having an active resonance region defined between a set of electrodes. Each resonator portion has a longitudinal axis directed along the resonator portion from the mounted end to a free end. The resonator portions are mounted such that their longitudinal axes are directed in different directions, e.g. an anti-parallel arrangement, so that acceleration sensitivity vector components aligned with the longitudinal axis cancel each other out.
    Type: Application
    Filed: March 25, 2011
    Publication date: July 14, 2011
    Applicant: RAKON UK LIMITED
    Inventors: Nigel David Hardy, George Hedley Storm Rokos
  • Patent number: 7915965
    Abstract: This invention relates to an oscillator having reduced sensitivity to acceleration. The oscillator includes a plurality of asymmetrically mounted resonator portions each having an active resonance region. The asymmetric mounting of the resonator portions means that each resonator portion has an axis passing through its active resonance region along which the acceleration sensitivity vector is dominant, i.e. the sensitivity to acceleration along the direction defined by one axis is much greater than the sensitivity to acceleration in other directions. The resonators are mounted in an oscillator such that their dominant axes are directed in different directions, e.g. an anti-parallel arrangement, which means that the dominant acceleration sensitivity vectors can cancel each other out.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: March 29, 2011
    Assignee: Rakon UK Limited
    Inventors: Nigel David Hardy, George Hedley Storm Rokos
  • Publication number: 20090201096
    Abstract: This invention relates to an oscillator having reduced sensitivity to acceleration. The oscillator includes a plurality of asymmetrically mounted resonator portions each having an active resonance region. The asymmetric mounting of the resonator portions means that each resonator portion has an axis passing through its active resonance region along which the acceleration sensitivity vector is dominant, i.e. the sensitivity to acceleration along the direction defined by one axis is much greater than the sensitivity to acceleration in other directions. The resonators are mounted in an oscillator such that their dominant axes are directed in different directions, e.g. an anti-parallel arrangement, which means that the dominant acceleration sensitivity vectors can cancel each other out.
    Type: Application
    Filed: June 29, 2007
    Publication date: August 13, 2009
    Applicant: RAKON UK LIMITED
    Inventors: Nigel David Hardy, George Hedley Storm Rokos
  • Patent number: 7573345
    Abstract: A method provides a temperature controlled frequency source. The method reduces the effects of temperature variations on an operating frequency of the temperature controlled frequency source by temperature compensating the temperature controlled frequency source. The temperature-controlled frequency source may be an Oven-Controlled crystal oscillator (DCXO) and the temperature-controlled frequency source may be a TCXO ASIC. Analago temperature compensation may be provided by generating zero to fourth-order polynomial Chebyshev functions of temperature.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: August 11, 2009
    Assignee: Rakon UK Limited
    Inventors: Nigel David Hardy, Karl Robert Ward