United Technologies Corporation

Johnson and Johnson Vision Care, Inc.

Xinetics, Inc.

David D Pearson

Zaffir A Chaudhry

Bernard H Kear

Frank D Lemkey

Jeffrey H Roffman

James R Dunphy

Robin Mihekun Miller

Thomas Gregory Tillman

Edward F Crawley

Gregory J Hofmann

Larry G Jones

Franklin D Lemkey

Thomas A Wynosky

Mark A Ealey

Constantino V Loffredo

John L Kettle

Robert M Rukus

Jeffrey L Cavaco

Nancy Mary Rey

Thomas R Rooney

Jacqueline Roche

Kenneth C Dreitlein

Jacqueline M Roche

Gary R Hilbert

A multichannel, surface parallel, zonal transducer system includes a membrane and a compound transducer mounted on the membrane, the compound transducer including a plurality of transducer elements extending generally parallel to the membrane, interconnected in a closed network and individually addressable.

Multichannel, surface parallel, zonal transducer system

The present provides deformable molds and methods for manufacturing ophthalmic lenses using deformable molds. The molds of the invention may be used in the custom manufacture of ophthalmic lenses.

Deformable molds and methods for their use in the manufacture of ophthalmic lenses

A gas turbine engine includes a variable area nozzle having a plurality of flaps. The flaps are actuated by a plurality of actuating mechanisms driven by shape memory alloy (SMA) actuators to vary fan exist nozzle area. The SMA actuator has a deformed shape in its martensitic state and a parent shape in its austenitic state. The SMA actuator is heated to transform from martensitic state to austenitic state generating a force output to actuate the flaps. The variable area nozzle also includes a plurality of return mechanisms deforming the SMA actuator when the SMA actuator is in its martensitic state.

Variable area nozzle for gas turbine engines driven by shape memory alloy actuators

A method and apparatus reduces the magnitude of vibratory strain in a turbomachine component that experiences high steady state strain by, in the case of a passive embodiment, coupling a mechanical-to-electromagnetic energy converter to an interior and/or exterior surface of the component, and/or embedding the energy converter within the component, and by, in the case of an active embodiment, coupling a mechanical-to-electromagnetic energy converter to an interior and/or exterior surface of the component.

Method and apparatus for damping vibration in turbomachine components

A high strength nickel base superalloy having a novel microstructure is described. The article consists of a gamma matrix containing a oriented gamma prime second phase having a plate or rod form. This noncuboidal gamma prime phase is produced by aging solution treated material under an applied stress. When this process is applied to a certain class of superalloys which are rich in refractory elements, the resultant structure provides exceptional resistance to creep at elevated temperatures.

Superalloy properties through stress modified gamma prime morphology

An alloy composition coasting scheme and specific heat treatment process are described for the production of directionally solidified single crystal articles which have exceptional properties. The alloy is based on the Ni-Al-Mo system, preferably with additions of Ta. The process for producing the article inclused directional solidification at a high rate to produce a fine dendritic microstructure. A combined homogenizing and solution treatment is performed to provide a unique chemically homogeneous single phase microstructure. This homogeneous article is rapidly quenched and then aged at an intermediate temperature to develop a controlled uniform distribution of fine gamma prime phase particles.

Heat treated single crystal articles and process

This disclosure relates to directionally solidified articles produced from a eutectic alloy in the nickel-aluminum-molybdenum system with tantalum added. The articles have a microstructure consisting of a ductile matrix phase of gamma prime containing a fibrous reinforcing second phase of alpha Mo. The nominal composition of the base alloy is 6.9 weight percent aluminum, 15.2 weight percent tantalum, 18.5 weight percent molybdenum, balance nickel. The directionally solidified alloy articles of the invention are characterized by exceptional mechanical properties combined with good oxidation resistance and reasonable sulfidation resistance at elevated temperatures.

Tantalum modified gamma prime-alpha eutectic alloy

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Hudson, MA, United States of America

David D Pearson