Patents by Inventor Bruce R. Leadbeatter

Bruce R. Leadbeatter 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).

  • Expandable woodturning chuck
    Patent number: 4541465
    Abstract: The present invention relates to an expandable chuck for faceplate woodturning. The chuck is of simple construction for attachment to a conventional faceplate. A frusto-conical plug drawn towards the faceplate expands a radially segmented annular member. An annular resilient ring biases the annular member against expansion. Preferably a keeper also prevents disintegration of the segmented annular member under high centrifugal stress.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: September 17, 1985
    Inventor: Bruce R. Leadbeatter