Patents by Inventor William R. Shafer

William R. Shafer 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: 6568430
    Abstract: Quick release pipe end caps secure materials enclosed by pipes. This is accomplished by capping the ends of the storage pipe with quick release pipe end caps. Contractors frequently transport a variety of materials to job sites using a large pipe as a storage container. Quick release pipe end caps have a cap which covers the end of a pipe and a quick release mechanism which removably secures the cap to the pipe without requiring the use of tools. The quick release mechanism consists of a band having slots which is enclosed by a latching mechanism. The cams on the end of a locking lever engage with the slots in the band and tighten the band about the cap.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: May 27, 2003
    Inventor: William R. Shafer