Patents by Inventor Douglas H. Wilburn

Douglas H. Wilburn 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).

  • Patent number: 4801230
    Abstract: A retainer includes a cylindrical sleeve projecting downwardly into a hole in a plate with a flange at the lower end of the sleeve engaging the underside of the plate. Resilient fingers struck out from the sleeve engage the top of the plate to cooperate with the flange in holding the sleeve in place. A fastener initially is threaded along dimples in the sleeve to hold the fastener while permitting the latter to be threaded down into a member beneath the plate. As the fastener is threaded down, its head engages the sleeve which is crushed between the head and the plate so as to be out of the way.
    Type: Grant
    Filed: February 8, 1984
    Date of Patent: January 31, 1989
    Assignee: Elco Industries, Inc.
    Inventor: Douglas H. Wilburn