Patents by Inventor Arthur Alexander Bernard

Arthur Alexander Bernard 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).

  • Chuck
    Patent number: 4093247
    Abstract: A drill holding chuck is provided having particular utility for use with a drill sharpening tool. The chuck includes an outer tubular housing having cylindrical ends rotably receivable in bearing members to provide spaced support for the chuck and the jaw closing force is applied to the chuck jaws about midway of their length.
    Type: Grant
    Filed: July 20, 1976
    Date of Patent: June 6, 1978
    Assignee: Darex Corporation
    Inventors: Arthur Alexander Bernard, Richard Allen Bernard
  • Twist drill sharpener and aligning fixture
    Patent number: 4001975
    Abstract: A twist drill sharpener employing a rotary grinding wheel has a twist drill chuck which mounts a pair of cams which are locked to the chuck when the lips of the twist drill are aligned in an aligning fixture and then the chuck, cams and drill are inserted in a second fixture provided with a pair of cam followers which in conjunction with the chuck carried cams control the grinding of the twist drill.
    Type: Grant
    Filed: July 9, 1975
    Date of Patent: January 11, 1977
    Assignee: Darex Corporation
    Inventors: Arthur Alexander Bernard, Richard Allen Bernard