Patents by Inventor Paul Derek Hayford

Paul Derek Hayford 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).

  • Dynamic load cell apparatus
    Patent number: 6508132
    Abstract: A load cell for use in dynamic testing apparatus for mechanically testing samples includes an accelerometer mounted in the load cell on the same axis as the line of action of the mechanical force applied to the specimen under test. The resultant signal from the combination of the normal output from the load cell and the output from the accelerometer compensates for errors introduced by the mass of the moving grip used to grip the specimen in the apparatus.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: January 21, 2003
    Assignee: Instron Corporation
    Inventors: Raymond David Lohr, Paul Derek Hayford, Chanchal Singh Bahra