Patents by Inventor James T. Piechowiak

James T. Piechowiak 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).

  • Polybutylene plumbing fittings and method and apparatus for assembly thereof
    Patent number: 4784409
    Abstract: A plumbing construction is provided including a pipe, a fitting, and a bushing, each formed from polybutylene and providing a fluid-tight connection between the pipe and the fitting. The bushing is mounted about the pipe and an end of the pipe and the bushing is inserted into the fitting. The bushing is rotated with respect to the fitting to produce friction welds between the bushing and both the pipe and the bushing.
    Type: Grant
    Filed: January 2, 1985
    Date of Patent: November 15, 1988
    Inventor: James T. Piechowiak