Patents by Inventor Thomas J. Shiell

Thomas J. Shiell 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).

  • Collinear four-point probe head and mount for resistivity measurements
    Patent number: 4383217
    Abstract: An improved resistivity probe comprised of a rigid strip of electrically nonconducting material having a number of metallic, generally parallel pins coupled thereto. The strip can be mounted in a vertically shiftable probe head in any suitable manner. In one embodiment, the pins are rigidly secured by an epoxy to the strip. In another embodiment, the probe includes a pair of rigid strips having semi-cylindrical recesses on the inner faces thereof for receiving therebetween a number of resistivity measuring pins. The strips are held together by rivets or other fasteners. A multiple probe assembly can be made with a disk-like body having a number of angularly disposed slots therethrough for receiving a number of probes with each probe including a rigid strip having a number of pins coupled thereto. The probes extend into respective slots of the body so that the pins project downwardly from the lower face of the body to permit multiple resistivity measurements to be made without having to rotate the probes.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: May 10, 1983
    Inventor: Thomas J. Shiell
  • Collinear four-point probe head and mount for resistivity measurements
    Patent number: 4267506
    Abstract: An improved resistivity probe comprised of a rigid strip of electrically nonconducting material having a number of metallic, generally parallel pins coupled thereto. The strip can be mounted in a vertically shiftable probe head in any suitable manner. In one embodiment, the pins are rigidly secured by an epoxy to the strip. In another embodiment, the probe includes a pair of rigid strips having semi-cylindrical recesses on the inner faces thereof for receiving therebetween a number of resistivity measuring pins. The strips are held together by rivets or other fasteners. A multiple probe assembly can be made with a disk-like body having a number of angularly disposed slots therethrough for receiving a number of probes with each probe including a rigid strip having a number of pins coupled thereto. The probes extend into respective slots of the body so that the pins project downwardly from the lower face of the body to permit multiple resistivity measurements to be made without having to rotate the probes.
    Type: Grant
    Filed: January 2, 1979
    Date of Patent: May 12, 1981
    Inventor: Thomas J. Shiell