Patents by Inventor Paul J. Sirocky

Paul J. Sirocky 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).

  • High-temperature, bellows hybrid seal
    Patent number: 5332239
    Abstract: A high-temperature hybrid seal is constructed of multiple elements to meet the many demands placed on the seal. The primary elements are: a central high-temperature bellows, a braided ceramic sheath covering the bellows, an outer abrasion resistant sheath covering the ceramic sheath, and a structurally-sound seal-end termination.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: July 26, 1994
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Bruce M. Steinetz, Paul J. Sirocky
  • High temperature, flexible pressure-actuated, brush seal
    Patent number: 5076590
    Abstract: A high temperature, flexible brush seal comprises a bundle of fibers or bristles held tightly together and secured at one end with a backing plate. The assembly includes a secondary spring-clip having one end anchored to the brush seal backing plate.An alternate embodiment of the seal utilizes a metal bellows containing coolant holes. Another embodiment of the seal uses non-circular cross-sectional fibers which may be square, rectangular or hexagonal in cross section.
    Type: Grant
    Filed: November 26, 1990
    Date of Patent: December 31, 1991
    Assignee: The United States of America, as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Bruce M. Steinetz, Paul J. Sirocky
  • High-temperature, flexible, thermal barrier seal
    Patent number: 5014917
    Abstract: This device seals the sliding interfaces between structural panels that are roughly perpendicular to each other or whose edges are butted against one another. The seal is mounted in a rectangular groove in a movable structural panel and comprises a plurality of particles or balls densely packed in an outer sheathing. The balls are laterally preloaded to maintain sealing contact with the adjacent wall using a pressurized linear bellows. Distortions in the adjacent panel are accommodated by rearrangement of the particles within the outer sheathing.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: May 14, 1991
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Paul J. Sirocky, Bruce M. Steinetz
  • High temperature flexible seal
    Patent number: 4917302
    Abstract: This device is concerned with sealing the sliding interfaces between structural panels that are roughly perpendicular to each other or whose edges are butted against one another. The gap which the seal element must seal is not uniform along the seal length requiring significant seal flexibility.The seal 10 is mounted in a rectangular groove 14 in a moveable structural panel 16. The seal comprises a plurality of rectangular shaped wafers 12 stacked next to one another and preloaded in the axial direction to minimize leakage between wafers. The wafers are laterally preloaded to maintain sealing contact along the wafer faces which engage the adjacent wall of a sidewall 18 using one of several approaches, such as the pressurized linear bellows 22. The seal accomodates distortions in the adjacent panel by relative sliding between adjacent wafers.Leakage between wafers is further minimized with good wafer surface finishes.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: April 17, 1990
    Assignee: The United States of America as represented by the United States National Aeronautics and Space Administration
    Inventors: Bruce M. Steinetz, Paul J. Sirocky