Patents by Inventor Norman Lee Carroll

Norman Lee Carroll 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).

  • Pipe closure
    Patent number: 5850854
    Abstract: A reusable pipe closure is constructed using an O-ring end cap and split collar. In practice the end cap and O-ring are inserted over the end of a pipe, the split collar is placed over the end cap and the end of the pipe and the two halves of the split collar are closed; securely compressing the collar around the pipe.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: December 22, 1998
    Inventor: Norman Lee Carroll