Patents by Inventor Paul M. Lutjen

Paul M. Lutjen 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).

BLADE OUTER AIR SEAL WITH COOLING HOLES

Publication number: 20160201467

Abstract: A blade outer air seal (BOAS) for a turbomachine can include a BOAS body including a plurality of cooling holes defined in substantial conformance with a set of Cartesian coordinates as set forth in Table 1 herein, wherein the Cartesian coordinates are provided with respect to a point P which is at the center of an arc W and co-planer with a machined surface V. A blade outer air seal (BOAS) for a turbomachine can include a BOAS body including a plurality of cooling holes defined in substantial conformance with a set of Cartesian coordinates as set forth in Table 2 herein, wherein the Cartesian coordinates are provided with respect to a point P? which is at the center of an arc W? and co-planer with a machined surface V?.

Type: Application

Filed: January 13, 2015

Publication date: July 14, 2016

Inventors: Peter J. Milligan, Paul M. Lutjen, Ken F. Blaney, Thurman C. Dabbs, Kevin J. Ryan
SLIDING SEAL

Publication number: 20160186588

Abstract: The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a first seal section including one or more first slots formed therein, a second seal section including one or more second slots formed therein and one or more frustoconical rings disposed in respective ones of the slots, such that the first and second seal sections and the frustoconical rings move relative to one another during relative movement between the two components. A wave spring disposed between the first and second seal sections biases the first and second seal sections away from one another.

Type: Application

Filed: August 20, 2015

Publication date: June 30, 2016

Inventors: Timothy M. Davis, Paul M. Lutjen, Mark J. Rogers
REPAIR MATERIAL PREFORM

Publication number: 20160175996

Abstract: A structural element for repairing a damaged component comprising a shaped cavity configured to receive the damaged component and a repair material, the shaped cavity comprising a material having a first melting point and the repair material comprising a material having a second melting point that is lower than the first melting point. The shaped cavity may comprise a preform for the damaged component. The preform may comprise a mold configured to reconstruct the shape of the damaged component. The repair material may comprise a first material and a second material, the second material having a melting point that is lower than the first material. The repair material may comprise a Nickel-Boron composition. The repair material may have a melting point that is approximately 40 degrees Fahrenheit lower than the melting point of the damaged component.

Type: Application

Filed: March 10, 2015

Publication date: June 23, 2016

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventors: PHILIP R. BELANGER, PAUL M. LUTJEN, RICHARD K. HAYFORD
REVERSIBLE FLOW BLADE OUTER AIR SEAL

Publication number: 20160169016

Abstract: A casting core for a Blade Outer Air Seal includes a heat exchange cavity core section in communication with a first plenum section and a second plenum section, the first plenum and the second plenum section are of a thickness greater than the heat exchange cavity section.

Type: Application

Filed: October 12, 2015

Publication date: June 16, 2016

Inventors: Ken F. Blaney, Anthony B. Swift, Neil L. Tatman, Paul M. Lutjen, Christopher M. Jarochym
Thermal-Sprayed Bonding of a Ceramic Structure to a Substrate

Publication number: 20160123160

Abstract: A thermal barrier system includes a protective coating on a substrate, and a ceramic feature layer attached to the protective coating via an adhesive spray coat.

Type: Application

Filed: October 27, 2015

Publication date: May 5, 2016

Inventors: Christopher W. Strock, Paul M. Lutjen
BIFURCATED SLIDING SEAL

Publication number: 20160115809

Abstract: The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a first seal section and an uncoupled second seal section which allows the first and second seal sections to move relative to one another during relative movement between the two components. One or more spring tabs extend from the first seal section and/or the second seal section, are disposed between the first and second seal sections, and bias the first and second seal sections away from one another.

Type: Application

Filed: August 19, 2015

Publication date: April 28, 2016

Inventors: Timothy M. Davis, Paul M. Lutjen
SLIDING SEAL

Publication number: 20160115814

Abstract: The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a first seal section and an uncoupled second seal section which allows the first and second seal sections to move relative to one another during relative movement between the two components. A wave spring disposed between the first and second seal sections biases the first and second seal sections away from one another. A compliant seal is carried by the second seal section. Other combinations of seal sections, wave springs, and compliant seals are also disclosed.

Type: Application

Filed: August 20, 2015

Publication date: April 28, 2016

Inventors: Timothy M. Davis, Paul M. Lutjen
BIFURCATED SLIDING SEAL

Publication number: 20160115810

Abstract: The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a first seal section and an uncoupled second seal section which allows the first and second seal sections to move relative to one another during relative movement between the two components. A wave spring and/or a rope seal is disposed between the first and second seal sections biases the first and second seal sections away from one another.

Type: Application

Filed: August 20, 2015

Publication date: April 28, 2016

Inventors: Timothy M. Davis, Paul M. Lutjen
CONFORMAL SEAL

Publication number: 20160115811

Abstract: The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a first seal section and an adjacent second seal section, each including a base and two extending legs defining respective first and second ends of the seal. At least the first seal section includes a first plurality of slots extending from the first end to the base and a second plurality of slots extending from the second end to the base.

Type: Application

Filed: August 20, 2015

Publication date: April 28, 2016

Inventors: Timothy M. Davis, Paul M. Lutjen, Mark J. Rogers
SEAL ASSEMBLY FOR SEALING AN AXIAL GAP BETWEEN COMPONENTS

Publication number: 20160090853

Abstract: A seal assembly extends along an axis and seals an axial (and/or radial) gap between a first component and a second component. The seal assembly includes a seal carrier and a seal element. The seal element extends axially (and/or radially) between a first portion and a second portion. The first portion of the seal element is slidingly arranged within a slot in an axial end (or a radial side) of the seal carrier. The second portion of the seal element is configured to axially (and/or radially) engage the second component.

Type: Application

Filed: September 25, 2015

Publication date: March 31, 2016

Inventors: Paul M. Lutjen, Timothy M. Davis, Mark J. Rogers
GAS TURBINE ENGINE AIRFOIL COOLING PASSAGE TURBULATOR PEDESTAL

Publication number: 20160069191

Abstract: A gas turbine engine component includes a structure that provides a cooling passage. The structure has a turbulator with a pedestal joining opposing first and second surfaces. The turbulator includes first and second legs spaced apart from one another and adjoining the pedestal. The first leg adjoins the second surface, and the second leg adjoins the first surface.

Type: Application

Filed: April 25, 2014

Publication date: March 10, 2016

Inventor: Paul M. Lutjen
ACTIVELY COOLED BLADE OUTER AIR SEAL

Publication number: 20160061113

Abstract: A turbine component includes a main body with an upstream end and a downstream end. A cooling passage network is interior to the main body and has multiple cooling passages. A shared passage wall in the cooling passage network includes a cross passage opening connecting each passage partially defined by the shared passage wall. The cross passage further including a pressure balancing feature operable to reduce a local pressure differential in a fluid pressure in each adjacent passage at the cross passage.

Type: Application

Filed: August 31, 2015

Publication date: March 3, 2016

Inventors: Dmitriy A. Romanov, Paul M. Lutjen
GAS TURBINE ENGINE RAPID RESPONSE CLEARANCE CONTROL SYSTEM WITH AIR SEAL SEGMENT INTERFACE

Publication number: 20160053626

Abstract: An active clearance control system of a gas turbine engine includes an air seal segment with a bridge hook having a lugged aperture.

Type: Application

Filed: February 6, 2014

Publication date: February 25, 2016

Applicant: United Technologies Corporation

Inventors: Ken F. Blaney, Paul M. Lutjen, Brian R. Pelletier
BLADE OUTER AIR SEAL HAVING PARTIAL COATING

Publication number: 20160047264

Abstract: A blade outer air seal member includes a distinct body that has two circumferential sides, a leading edge and a trailing edge, and a gas path side and a radially outer side opposite the gas path side. A ceramic coating is initially disposed on a portion of the gas path side. The ceramic coating includes a forward coating portion and an aft coating portion. The gas path side has a bare area axially separating the forward coating portion and the aft coating portion. The bare area excludes any of the ceramic coating. One or more cooling passages have an outlet that opens at the bare area. The cooling passage extends in the body in an axial direction under the ceramic coating.

Type: Application

Filed: June 10, 2015

Publication date: February 18, 2016

Inventors: Christopher R. Joe, Paul M. Lutjen, Dominic J. Mongillo, JR.
COMPRESSOR CASE SNAP ASSEMBLY

Publication number: 20160040555

Abstract: A turbine engine case spacer includes an air seal and a flange. The air seal is snap fit to the flange, and each flange includes at least two distinct material layers.

Type: Application

Filed: February 26, 2014

Publication date: February 11, 2016

Inventors: Richard K. Hayford, Paul M. Lutjen
MULTI-AXIAL BRUSH SEAL

Publication number: 20160040600

Abstract: A seal assembly, includes a first brush supported between first and second plates, a second brush supported on the first and second plates transverse to the first brush seal, and a third plate attached to the second brush.

Type: Application

Filed: February 26, 2014

Publication date: February 11, 2016

Applicant: United Technologies Corporation

Inventor: Paul M. Lutjen
GEOMETRICALLY SEGMENTED COATING ON CONTOURED SURFACES

Publication number: 20160040551

Abstract: A method of locating a surface feature for a geometrically segmented coating on a contoured surface comprising providing an article having a contoured surface; overlaying an assembly of ligaments on the contoured surface; and locating a surface feature at a predetermined location relative to each ligament.

Type: Application

Filed: July 30, 2015

Publication date: February 11, 2016

Inventors: Christopher W. Strock, Joel H. Wagner, Paul M. Lutjen
Surface area augmentation of hot-section turbomachine component

Patent number: 9255491

Abstract: An example turbomachine hot-section component protrusion extends away from a base surface of a hot-section component along a longitudinal axis. A radial cross-section of the protrusion has a profile that is non-circular.

Type: Grant

Filed: February 17, 2012

Date of Patent: February 9, 2016

Assignee: United Technologies Corporation

Inventors: Ken F. Blaney, Paul M. Lutjen
AIR-DRIVEN PARTICLE PULVERIZER FOR GAS TURBINE ENGINE COOLING FLUID SYSTEM

Publication number: 20160032835

Abstract: A cooling fluid system for a gas turbine engine includes a structure that provides a fluid passageway. The structure has a wall with an aperture that is in fluid communication with the fluid passageway. The aperture is configured to provide a fluid in a flow direction. Fingers are arranged in the fluid passageway facing into flow direction. The fluid passageway includes a cooling cavity immediately downstream from the fingers and it is configured to receive fluid having passed over or through the fingers.

Type: Application

Filed: July 21, 2015

Publication date: February 4, 2016

Inventors: Paul M. Lutjen, Anthony B. Swift
Cost Effective Manufacturing Method for GSAC Incorporating a Stamped Preform

Publication number: 20160032774

Abstract: A process for manufacturing a preformed sheet having geometric surface features for a geometrically segmented abradable ceramic thermal barrier coating on a turbine engine component, the process comprising the steps of providing a preformed sheet material. The process includes forming a partially of geometric surface features in the sheet material. The process includes joining the sheet material to a substrate of the turbine engine component. The process includes disposing a thermally insulating topcoat over the geometric surface features and forming segmented portions that are separated by faults extending through the thermally insulating topcoat from the geometric surface features.

Type: Application

Filed: May 19, 2015

Publication date: February 4, 2016

Inventors: Christopher W. Strock, Paul M. Lutjen

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