Patents by Inventor Stanley ISBITSKI

Stanley ISBITSKI 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).

  • BUTTERFLY VALVE AND BUTTERFLY DISC
    Publication number: 20200309272
    Abstract: An offset butterfly valve comprising a butterfly disc which receives a splined valve stem is disclosed. The butterfly disc is positioned for sealing an annulus formed in the valve housing when the valve stem is rotated from an open position to closed position. Provision of the spline towards the center of the valve stem and the butterfly disc allows the butterfly disc to move along the valve stem. In a particular embodiment a valve seal is secured to the butterfly disc using a securing disc which is threaded into a threaded cylinder concentric with the butterfly disc.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 1, 2020
    Inventors: Stanley ISBITSKI, Bob WADITSCHATKA, François JOUAN, Nicolas Hervé François LOURDEL, Gordon STOVEL