Patents by Inventor Donald Sirola Foreman

Donald Sirola Foreman 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).

  • Means for reducing minimum sensing distance of an ultrasonic proximity sensor
    Patent number: 5917776
    Abstract: A rugged ultrasonic sensor is provided which is capable of detecting objects in very close proximity to the sensor. This close proximity detection includes the detection of objects which are immediately adjacent the sensor housing. Such close range operation is achieved by tailoring the transducer to operate at previously undesirable conditions, including low Q and high frequency. Such operating conditions allow the resonating characteristics of the transducer not to interfere with close range operation.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: June 29, 1999
    Assignee: Honeywell Inc.
    Inventor: Donald Sirola Foreman