Patents by Inventor Michael D. Townsend

Michael D. Townsend 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: 8095073
    Abstract: A mobile station includes an adjustable member for increasing a separation distance between an audio signal output device and an electronic circuit to reduce EMI proximate the audio signal output device caused by the electronic circuit. In one embodiment, the adjustable member comprises a slide member that extends at least a portion of the audio signal output device away from the electronic circuit to increase the separation distance. In another embodiment, the adjustable member comprises a pivot member that rotates the electronic circuit (or audio signal output device) away from the audio signal output device (or electronic circuit) to increase the separation distance. In any event, increasing the separation distance between the audio signal output device and the electronic circuit decreases the EMI proximate the audio signal output device, and therefore EMI effects on external circuits proximate the mobile station, such as a hearing aid.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: January 10, 2012
    Assignee: Sony Ericsson Mobile Communications AB
    Inventors: Gerard J. Hayes, Rodney O. Williams, Michael D. Townsend
  • Patent number: 7280808
    Abstract: A wireless communications device can include a power amplifier that is configured to transmit information to a wireless communications network during a first time interval and configured to avoid transmitting information during a second time interval. A circuit substrate is coupled to the power amplifier and a power source is configured to provide power to the power amplifier. First and second conductor are coupled to the power amplifier and to the power source, and have respective overlapping and non-overlapping portions on the circuit substrate.
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: October 9, 2007
    Assignee: Sony Ericsson Mobile Communications, AB
    Inventors: Matthew J. Murray, Michael D. Townsend, Christian L. Lindqvist, Michael O. Wayland
  • Patent number: 6140815
    Abstract: Spin stand platform having split axes. The platform includes an air bearing spindle stage supporting a test disk and constrained for motion in a plane on a surface along a first axis. A micropositioning stage air bearing is provided which is constrained for motion in the plane on the surface along a second axis orthogonal to the first axis and the micropositioning stage is adapted to support a read head element under test. First and second acuators move the stages to desired locations. At the desired location, apparatus removes air from the air bearings to lock-down the stages to the surface at the desired locations. It is preferred that the air bearings be vacuum preloaded and that linear motors be used to move the stages.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: October 31, 2000
    Assignee: Dover Instrument Corporation
    Inventors: Philip M. Greene, Stephen L. Hero, Michael D. Townsend