Patents by Inventor Maciej T. PIETRZAK

Maciej T. PIETRZAK 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).

  • Patent number: 11965599
    Abstract: A brush seal includes an annular plate assembly defining a radially inner diameter having an inner central axis and a radially outer diameter having an outer central axis. The inner central axis and the outer central axis are spaced apart from each other by an offset, such that the radially inner diameter and the radially outer diameter are eccentric with respect to each other. The brush seal further includes a bristle pack. The bristle pack includes a plurality of bristles defining a bristle bore having a bristle bore central axis. The bristle bore central axis is aligned with the inner central axis and the bristle bore central axis is offset from the outer central axis. Moreover, the brush seal is disposed around a rotating component. The bristle bore central axis is aligned with a component axis of the rotating component and the bristle pack engages with the rotating component.
    Type: Grant
    Filed: February 7, 2023
    Date of Patent: April 23, 2024
    Inventors: Gervas Franceschini, Maciej T. Pietrzak
  • Publication number: 20230287979
    Abstract: A brush seal includes an annular plate assembly defining a radially inner diameter having an inner central axis and a radially outer diameter having an outer central axis. The inner central axis and the outer central axis are spaced apart from each other by an offset, such that the radially inner diameter and the radially outer diameter are eccentric with respect to each other. The brush seal further includes a bristle pack. The bristle pack includes a plurality of bristles defining a bristle bore having a bristle bore central axis. The bristle bore central axis is aligned with the inner central axis and the bristle bore central axis is offset from the outer central axis. Moreover, the brush seal is disposed around a rotating component. The bristle bore central axis is aligned with a component axis of the rotating component and the bristle pack engages with the rotating component.
    Type: Application
    Filed: February 7, 2023
    Publication date: September 14, 2023
    Applicant: ROLLS-ROYCE plc
    Inventors: Gervas FRANCESCHINI, Maciej T. PIETRZAK