Patents by Inventor Sherwood P. Judson

Sherwood P. Judson 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: 3992945
    Abstract: A Bourdon pressure gauge is provided with a direct-coupled electronic and visual readout. Specifically, the electronic and visual readouts are direct-coupled in that they are taken along a common linkage from the Bourdon tube. In addition, they are of comparable accuracy because the electrical readout is taken at a point of relatively small displacement amplification on the commmon linkage whereas the visual readout is taken at a point of substantial displacement amplification. In a preferred embodiment, the Bourdon tube is linked to a pivotally mounted linkage element having a cam head for driving a helicoidal gear. An electrical contact in cooperation with resistor disposed on the pivotally mounted element is used to take a variable resistance electrical readout, and a pointer for taking a visual readout is connected to the helicoidal gear.
    Type: Grant
    Filed: June 5, 1975
    Date of Patent: November 23, 1976
    Assignee: American Chain & Cable Company, Inc.
    Inventor: Sherwood P. Judson