Patents by Inventor Derek James Butland

Derek James Butland 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).

  • Compliant constrained headband spring
    Patent number: 10178476
    Abstract: A compliant constrained headband spring for audio headphones includes a headband spring element and a stiffness enhancing element coupled to the headband spring element. The compliant constrained headband spring exhibits a first stiffness in an open position and a second stiffness greater than the first stiffness when closed beyond a predetermined point.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: January 8, 2019
    Assignee: BOSE CORPORATION
    Inventors: Eric M. Wallace, Michael J. Monahan, Derek James Butland
  • Compliant constrained headband spring
    Patent number: 9883288
    Abstract: A compliant constrained headband spring for audio headphones includes a headband spring element and a stiffness enhancing element coupled to the headband spring element. The compliant constrained headband spring exhibits a first stiffness in an open position and a second stiffness greater than the first stiffness when closed beyond a predetermined point.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: January 30, 2018
    Assignee: BOSE CORPORATION
    Inventors: Eric M. Wallace, Michael J. Monahan, Derek James Butland
  • COMPLIANT CONSTRAINED HEADBAND SPRING
    Publication number: 20170366892
    Abstract: A compliant constrained headband spring for audio headphones includes a headband spring element and a stiffness enhancing element coupled to the headband spring element. The compliant constrained headband spring exhibits a first stiffness in an open position and a second stiffness greater than the first stiffness when closed beyond a predetermined point.
    Type: Application
    Filed: August 31, 2017
    Publication date: December 21, 2017
    Inventors: Eric M. Wallace, Michael J. Monahan, Derek James Butland
  • COMPLIANT CONSTRAINED HEADBAND SPRING
    Publication number: 20170264992
    Abstract: A compliant constrained headband spring for audio headphones includes a headband spring element and a stiffness enhancing element coupled to the headband spring element. The compliant constrained headband spring exhibits a first stiffness in an open position and a second stiffness greater than the first stiffness when closed beyond a predetermined point.
    Type: Application
    Filed: March 8, 2016
    Publication date: September 14, 2017
    Inventors: Eric M. Wallace, Michael J. Monahan, Derek James Butland