Patents by Inventor Michael J. Zawaski

Michael J. Zawaski 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).

  • Self-compensating seal for a rotating shaft
    Patent number: 4995620
    Abstract: A self-compensating seal for a rotating shaft includes a seal ring (13) having a plurality of trapezoidal and/or triangular shaped seal sections (15). A ring housing (22) is affixed to a shaft (12) and engages the inside trailing edge (20) of the seal ring (13). Means (30, 31) are provided to prohibit circumferential rotational movement of the seal ring (13) within the ring housing (22). The ring housing (22) and the seal ring (13) rotate with the shaft (12). The centrifugal forces generated by the rotation causes the seal sections (15) to move outward from the ring housing (22) and toward a wear plate (24). Engagement of the outside leading edge (21) of the seal ring (13) and the wear plate (24) perfects the seal.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: February 26, 1991
    Assignee: Westmont Inc.
    Inventors: Michael J. Zawaski, Don B. Van Possen