Patents by Inventor Allison ZYWIAK

Allison ZYWIAK 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).

  • Seal configuration to prevent rotor lock
    Patent number: 10934875
    Abstract: The present disclosure relates to gas turbine engine and seal configurations, and components for a gas turbine engine. In one embodiment, a seal for a gas turbine engine includes a rotary seal element, the rotary seal element configured to rotate during operation of a gas turbine engine, and a stationary seal element having an annular seal surface. The stationary seal element includes a first area of the annular seal surface configured to engage with the rotary seal element, and the stationary seal element includes a second area of the annular seal surface configured to provide reduced resistance to the rotary seal element during a flight windmilling event.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: March 2, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Allison Zywiak, Graham R. Philbrick
  • Method for clearance control in a gas turbine engine
    Patent number: 10247029
    Abstract: A gas turbine engine, system, and method with clearance control are provided. For example, the gas turbine engine includes a static component, and a rotating component that shifts axially in one of an aft direction and a forward direction in relation to the static component during a first operating condition of the gas turbine engine, and shifts axially in the other of the aft direction and the forward direction in relation to the static component during a second operating condition of the gas turbine engine. The first operating condition is when a rotating component growth and a static component growth change at different rates. The second operating condition is when the rotating component growth and static component growth normalize.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: April 2, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Graham Ryan Philbrick, Allison Zywiak
  • METHOD FOR CLEARANCE CONTROL IN A GAS TURBINE ENGINE
    Publication number: 20170226886
    Abstract: A gas turbine engine, system, and method with clearance control are provided. For example, the gas turbine engine includes a static component, and a rotating component that shifts axially in one of an aft direction and a forward direction in relation to the static component during a first operating condition of the gas turbine engine, and shifts axially in the other of the aft direction and the forward direction in relation to the static component during a second operating condition of the gas turbine engine. The first operating condition is when a rotating component growth and a static component growth change at different rates. The second operating condition is when the rotating component growth and static component growth normalize.
    Type: Application
    Filed: February 4, 2016
    Publication date: August 10, 2017
    Inventors: Graham Ryan Philbrick, Allison Zywiak
  • SEAL CONFIGURATION TO PREVENT ROTOR LOCK
    Publication number: 20160305266
    Abstract: The present disclosure relates to gas turbine engine and seal configurations, and components for a gas turbine engine. In one embodiment, a seal for a gas turbine engine includes a rotary seal element, the rotary seal element configured to rotate during operation of a gas turbine engine, and a stationary seal element having an annular seal surface. The stationary seal element includes a first area of the annular seal surface configured to engage with the rotary seal element, and the stationary seal element includes a second area of the annular seal surface configured to provide reduced resistance to the rotary seal element during a flight windmilling event.
    Type: Application
    Filed: April 15, 2015
    Publication date: October 20, 2016
    Inventors: Allison ZYWIAK, Graham R. PHILBRICK