Patents by Inventor Charles L. Vice

Charles L. Vice 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).

  • Microphone signal attenuating apparatus for oxygen masks
    Patent number: 5307793
    Abstract: The microphone of a breathing mask such as an aircraft flight crew oxygen mask is disabled during inhalation to prevent transmission of air flow sounds. In the preferred embodiments, selected mechanisms determine when breathable gas has been delivered to the mask and in response, disable the microphone by disconnecting it during this time. In another embodiment, a cover shifts into position over the microphone to prevent or reduce reception of sounds thereby during delivery of gas to the mask.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: May 3, 1994
    Assignee: Puritan-Bennett Corporation
    Inventors: Gary A. Sinclair, Charles L. Vice, Michael Brumley, Tom McDonald
  • Sound reproducing system
    Patent number: 4158400
    Abstract: A cone speaker is mounted to a horn within a reflex chamber behind a forward opening through the chamber, and the forward end of a horn is attached to the opening. The speaker is connected in the entrance discharging rearwardly into the chamber, and forwardly into the horn. The horn includes a restriction between the forward end of the horn and the speaker, and ports are formed through the horn, entering the restriction.
    Type: Grant
    Filed: May 15, 1978
    Date of Patent: June 19, 1979
    Inventor: Charles L. Vice
  • Computer cabinet
    Patent number: D320979
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: October 22, 1991
    Assignee: McDonnell Douglas Corporation
    Inventors: Charles L. Vice, Douglas M. Patton, Matthew F. Duncan, Richard K. Jung, Joan Ciranny