Honeywell International Inc.

Douglas Hall

Mark C Morris

Harry Lester Kington

Donald G Godfrey

Larry A Portolese

Richard George Rateick, Jr

Laurie Strom

Scott T Wakeman

In accordance with an exemplary embodiment, a method for manufacturing a bypass valve of a turbine engine control system is described. The bypass valve includes a proportional valve and an integrator valve and the integrator valve includes an integrator spring assembly. The method includes forming the integrator spring assembly using an additive manufacturing technique. The integrator spring assembly comprises first and second end portions with a spring portion disposed between the first and second end portions. The first and second end portions and the spring portion are formed as an integral unit without welding or brazing using the additive manufacturing technique. The method further includes assembling the integrator spring assembly, the integrator valve, and the proportional valve into a complete bypass valve assembly.

Spring assemblies for use in gas turbine engines and methods for their manufacture

A rotor body () having a plurality of cylindrical bores () each adapted to receive a piston () for reciprocating movement therein, each of the bores () being lined with a ceramic liner () having a first split (), and a method of forming a rotor () having a ceramic bore liner () that includes the steps of providing a rotor body having at least one bore (), providing a ceramic bore liner having a first end, a second end and a split having a width (), and compressing the bore liner to decrease the width and securing the bore liner in the at least one bore ().

Split ceramic bore liner, rotor body having a split ceramic bore liner and method of lining a rotor bore with a split ceramic bore liner

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Niles, MI, United States of America

Douglas Hall