Patents by Inventor Ross J. Holdaway

Ross J. Holdaway 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).

  • Elastic ring expander
    Patent number: 4325172
    Abstract: A device for expanding elastic rings by sliding the rings along a conical mandrel. Rings in the expanded state are controllably released from the large diameter end of the mandrel. The rings are moved along the mandrel by either pneumatic or mechanical means.
    Type: Grant
    Filed: November 14, 1979
    Date of Patent: April 20, 1982
    Assignee: Elastrator Company Limited
    Inventor: Ross J. Holdaway