Donnell E Crear

8448611, May 28, 2013

Jun 24, 2011

13/168310

Anthony John Dean - Scotia NY, US
David Michael Chapin - Kansas City MO, US
Donnell Eugene Crear - Glenville NY, US

General Electric Company - Schenectady NY

F22B 37/48

122379, 122396, 134166 R, 134 2212

A detonation device cleaning system includes a vessel having a main body including an outer surface and an inner surface that collectively define an interior chamber. A detonation combustor cleaning device is mounted to the vessel. The detonation combustor cleaning device includes at least one combustion chamber that defines a combustion flow path. The at least one combustion chamber includes a deflection member arranged along the combustion flow path. An ignition device is operatively connected to the at least one combustion chamber. The ignition device is selectively activated to ignite fuel within the at least one combustion chamber to produce a shockwave that moves in a first direction along the combustion flow path, is redirected back along the flow path within the at least one combustion chamber, and passes into the interior chamber to dislodge particles clinging to the inner surface of the vessel.

20090293817, Dec 3, 2009

May 30, 2008

12/129909

Anthony John Dean - Scotia NY, US
David Michael Chapin - Kansas City MO, US
Donnell Eugene Crear - Glenville NY, US

GENERAL ELECTRIC COMPANY - Schenectady NY

F28G 11/00

122379

A detonation combustor cleaning device includes at least one combustion chamber having combustion flow path and including a deflection member. An ignition device is operatively connected to the at least one combustion chamber is selectively activated to ignite a combustible fuel within the at least one combustion chamber to produce a shockwave that moves in a first direction along the combustion flow path, impacts the deflection member, reverses direction and passes into a vessel to dislodge particles clinging to inner surfaces thereof.

20130316081, Nov 28, 2013

May 22, 2012

13/477775

Michael Andrew Kovalcik - Van Buren Township MI, US
Eric Alan Estill - Morrow OH, US
Donnell Eugene Crear - Belleville MI, US

GENERAL ELECTRIC COMPANY - Schenectady NY

B05C 5/02
B05D 1/36

427265, 118300, 118313

A system and method for three-dimensional printing are provided. One three-dimensional printing system includes a first printing surface configured to hold a first three-dimensional object. The three-dimensional printing system also includes a second printing surface configured to hold a second three-dimensional object. The three-dimensional printing system includes at least one printing head disposed adjacent to the first and second printing surfaces for printing the first and second three-dimensional objects. A vertical position of the first printing surface is controlled independently from a vertical position of the second printing surface.

20200276764, Sep 3, 2020

Feb 28, 2019

16/289076

- Schenectady NY, US
Thomas ADCOCK - Glenville NY, US
Donnell CREAR - Simpsonville SC, US
Michael Evans GRAHAM - Slingerlands NY, US

B29C 64/393
B22F 3/105
B29C 64/153
B29C 64/268

A system for additive manufacturing machine energy beam alignment error compensation includes, a calibration table having x-y planar offsets to correct laser alignment errors representing energy beam positional offsets between beam-steering commanded energy beam locations and fiducial marks generated on a burn-paper, a recoater mechanism that distributes successive layers of powder, one or more sensors monitoring the powderbed surface proximal to the beam scan unit, and a processor unit configured to perform a method. The method including collecting sensor data representing height variations across at least a portion of the powderbed surface, deriving dimensional data from the collected data, analyzing the dimensional data to determine a distribution of differences between the powderbed surface and a reference plane containing the burn-paper when the fiducial marks were generated, and calculating z-axis calibration offset points for inclusion in the calibration table x-y planar offsets. A method and a non-transitory medium are also disclosed.

20190232427, Aug 1, 2019

Jan 26, 2018

15/881054

- Schenectady NY, US
Matthias Hoebel - Windisch, CH
Michael Evans Graham - Slingerlands NY, US
Robert John Filkins - Niskayuna NY, US
Felix Martin Gerhard Roerig - Baden, CH
Donnell Eugene Crear - Simpsonville SC, US
Prabhjot Singh - Rexford NY, US

B23K 26/342
B23K 26/073
B23K 26/06
B23K 26/082
B23K 26/08

An additive manufacturing system includes a laser device, a build plate, and a scanning device. The laser device is configured to generate a laser beam with a variable intensity. The build plate is configured to support a powdered build material. The scanning device is configured to selectively direct the laser beam across the powdered build material to generate a melt pool on the build plate. The scanning device is configured to oscillate a spatial position of the laser beam while the laser device simultaneously modulates the intensity of the laser beam to facilitate reducing spatter and to facilitate reducing a temperature of the melt pool to reduce overheating of the melt pool.

20180361502, Dec 20, 2018

Jun 19, 2017

15/626413

- Schenectady NY, US
Donnell Eugene Crear - Simpsonville SC, US
Juan Vicente Haro Gonzalez - Zurich, CH
Mikhail Pavlov - Dietikon, CH

B23K 26/06
B23K 26/342
B33Y 30/00
B33Y 80/00
B33Y 50/02
B22F 3/105

A component includes a body, and an interface in the body defining a first and second portion of the body made by different melting beam sources of a multiple melting beam source additive manufacturing system during a single build. The component also includes a channel extending through the body. The channel includes an interface-distant area on opposing sides of the interface, each interface-distant area having a first width. The channel also includes an enlarged width area fluidly communicative with the interface-distant areas and spanning the interface, the enlarged width area having a second width larger than the first width. Any misalignment of the melting beams at the interface is addressed by the enlarged width area, eliminating the problem of reduced cooling fluid flow in the channel.

20180347969, Dec 6, 2018

May 30, 2017

15/608187

- Schenectady NY, US
Donnell Eugene Crear - Simpsonville SC, US
Mikhail Pavlov - Dietikon, CH
Felix Martin Gerhard Roerig - Baden, CH

G01B 11/25
B29C 67/00
B33Y 50/02

Additive manufacturing systems (AMS) are disclosed. The AMS may include a build platform, and energy emitting device(s) positioned above the build platform. Energy emitting device(s) may be configured to form a test mark directly on a reference surface of the AMS. AMS may also include a calibration system operably connected to the energy emitting device(s). The calibration system may include measurement device(s) configured to determine an actual location of the test mark on the reference surface, and computing device(s) operably connected to the energy emitting device(s) and the measurement device(s). The computing device(s) may be configured to calibrate the energy emitting device(s) by adjusting the energy emitting device(s) in response to determining the actual location of the test mark on the reference surface from a predetermined, desired location on the reference surface.

20180348492, Dec 6, 2018

May 30, 2017

15/608154

- Schencedady NY, US
Donnell Eugene Crear - Simpsonville SC, US
Felix Martin Gerhard Roerig - Baden, CH

G02B 17/02
B29C 67/00
B33Y 50/02
B33Y 30/00
B33Y 40/00

Additive manufacturing systems (AMS) are disclosed. The AMS may include a movable build platform, and a calibration system operably connected to the build platform. The calibration system may include a reflective element operably coupled to the build platform, a first calibration model positioned above and vertically offset from the reflective element, and a first camera substantially aligned with the first calibration model. The first camera may be visually aligned with the reflective element to capture a first reflective image of the first calibration model as reflected by the reflective element. The calibration system may also include at least one computing device operably connected to the build platform and the first camera, and configured to calibrate the build platform by: adjusting an actual inclination of the build platform in response to determining the first reflective image differs from a predetermined image of the first calibration model.