Patents by Inventor Lawrence Webster Blake

Lawrence Webster Blake 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).

  • External blood pressure transducer
    Patent number: 3981197
    Abstract: Piezoresistive deflection-sensitive beam elements are encapsulated in a disc of elastomeric material which forms a fluid pressure responsive diaphragm. The beam elements are oriented within the diaphragm so as to be strained in tension or compression when the diaphragm is deformed by fluid pressure. The beam elements are connected in a bridge circuit to produce an electric signal which provides a fluid pressure indication or measurement, as in a blood pressure monitoring catheter.
    Type: Grant
    Filed: June 23, 1975
    Date of Patent: September 21, 1976
    Assignee: American Hospital Supply Corporation
    Inventors: Clement Eugene Lieber, Lawrence Webster Blake