Patents by Inventor James C. Bryan

James C. Bryan 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: 5029479
    Abstract: A differential pressure transducer has a first pressure chamber, defined by a first chip having a reduced-thickness first pressure-sensitive diaphragm on one side of that pressure chamber, and a second chip having a reduced-thickness second pressure-sensitive diaphragm on another side of that pressure chamber. A first pressure port communicates with that first diaphragm on a side opposite the first pressure chamber and a second pressure port is coupled to the first pressure chamber. A second pressure chamber is on a side of the second diaphragm opposite the first pressure chamber. Sensors are at the first diaphragm for measuring differential pressure between said first and second ports and at the second diaphragm for measuring differential pressure between said first and second pressure chambers. An aperture may extend through one of the chips in a region spaced from its pressure-sensitive diaphragm, which may therethrough be coupled to the second pressure port.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: July 9, 1991
    Assignee: Imo Industries, Inc.
    Inventor: James C. Bryan