Patents by Inventor John Weinrich

John Weinrich 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).

  • Expandable injector pipe
    Publication number: 20060027370
    Abstract: An expandable injector pipe has openings and a cover sleeve preferably secured at opposed ends with offset openings. Expansion of the base pipe causes the cover sleeve to expand while keeping the openings in the cover sleeve misaligned with the openings in the base pipe. Pressure from within the base pipe flexes the resilient cover sleeve to allow fluid to exit through the cover sleeve. Upon removal of applied pressure, the cover sleeve moves back against the base pipe to cover the openings in the base pipe to prevent flow in the reverse direction.
    Type: Application
    Filed: August 4, 2005
    Publication date: February 9, 2006
    Inventor: John Weinrich