United Technologies Corporation

Christopher M Juh

David Wasserman

Pedro David Laureano

Paul R Hanrahan

Ross Wilson

Thomas A Mariano

Ronald R Gagnon, Jr

George E Allen

David B Hudson

Dalton C Petrillo

Larry A Witherup

Ronnie J S Vezzetti

David J Wasserman

A flow metering and retention system includes a first disk that is annular in shape surrounding a centerline and extending axially along the centerline, a first coverplate axially rearward of the first disk with the first coverplate having an axially rearward extending arm, a second disk that is annular in shape surrounding the centerline and rearward of the first coverplate, a second coverplate at least partially between the first coverplate and the second disk; and a ring adjacent to the radially outer side of the slot of the second disk. The second disk has a slot into which the arm of the first coverplate extends with the slot having a radially outer side and a radially inner side, and the ring is configured to meter air flowing between the radially outer side of the slot and the arm of the first coverplate.

Flow metering and retention system

An intershaft seal assembly that is between a first shaft and a second shaft of a bearing compartment of an engine includes a first seal element and a retaining element. The first seal element surrounds the first shaft and includes a first portion is in contact with the first shaft and a second portion extending in a non-parallel direction to a radial direction of the first shaft. The retaining element is threadably engaged with the first shaft such that the retaining element presses the first seal element against the shoulder of the first shaft.

Deflection spring seal

A variable positioner includes a body portion with a cylindrical component, and an axially aligned through hole in the body position. A threading protrudes radially inward from an inner surface of the axially aligned through hole. A first axial end of the variable positioner defines an interface surface for interfacing with a rotor arm.

Variable positioner

The present application relates generally to a piloted nut. The piloted nut may be used on a tie-shaft to apply an axial load to a rotor. A piloting feature on an exterior surface of the nut provides radial piloting to the rotor. The piloted nut may be used in a gas turbine engine to apply an axial load to a rotor.

Piloted nut

A system for maintaining a position of a bearing compartment in a gas turbine during disassembly of a low-pressure turbine of the gas turbine engine includes a forward annular shaft defining an engine centerline axis. The system includes a ring radially inward from and engaged with an inner diameter surface of the forward annular shaft. An aft annular shaft is radially inward from the forward annular shaft and aft of the ring. The ring is connected to a forward end of the aft annular shaft for common rotation therewith. The ring retains the aft annular shaft during disassembly. The system includes a stack nut axially held between an aft facing shoulder of the forward annular stub shaft and a forward facing surface of the ring to retain the stack nut during disassembly.

Modular components for gas turbine engines

An example coupling stack includes a first rotating member and a second rotating member. A plurality of aligned slots is defined in the first rotating member and the second rotating member. A tab lock is provided having an annular body with an axial front side, an axial back side, and a radial inner periphery. Tabs are formed on the axial back side and inserted into the plurality of aligned slots. The annular body of the tab lock also includes a plurality of openings extending into the radial inner periphery. A plurality of flanges is provided on the axial back side of the annular body adjacent to the plurality of openings.

Turbine engine coupling stack

An example retaining ring removal tool includes a shaft extending along an axis from a first end to a second end, and at least one tapered tab extending axially from the first end of the shaft at a radially outer perimeter of the shaft.

Retaining ring removal tool

A trim balance for a gas turbine engine having a hollow rotatable rotor shaft includes an elongate support rod adapted for longitudinal accommodation within and mounting on an interior surface of the rotor shaft and one or more apertured balance weights supported on the support rod which extends through the weight apertures and a weight retainer for retaining the weights on the support rod.

Growing community of inventors

South Windsor, CT, United States of America

Christopher M Juh