John R Stevenson

US Patent:

7846226, Dec 7, 2010

Filed:

Feb 13, 2008

Appl. No.:

12/030677

Inventors:

Thomas Frederick Leininger - Chino Hills CA, US
Judeth Brannon Corry - Manvel TX, US
Fulton Jose Lopez - Clifton Park NY, US
Aaron John Avagliano - Houston TX, US
John Saunders Stevenson - Yorba Linda CA, US
Lien-Yan Chen - Spring TX, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

C01B 3/24
C10J 3/76

US Classification:

48 67, 48197 R, 48206, 48 61, 481271, 481273, 481279, 48128, 48207, 481983, 48204, 122511, 122 32, 165172, 165162

Abstract:

A method of assembling a spray quench apparatus is provided. The method includes coupling a first end of an exit tube to a quench chamber such that the exit tube end is in flow communication with the quench chamber, coupling at least one spray nozzle to an opposite second end of the exit tube such that water emitted from the spray nozzle fills the exit tube and forms a film of water across an inner surface of the exit tube, coupling a water source to the quench chamber for providing a substantially continuous water film along an inner surface of the quench chamber, and coupling at least one discharge apparatus to the quench chamber for providing water spray into the quench chamber, wherein the water of the water film and water sprays drains into a water sump.

US Patent:

8496412, Jul 30, 2013

Filed:

Dec 15, 2006

Appl. No.:

11/611399

Inventors:

John Saunders Stevenson - Yorba Linda CA, US
Randy Scott Longtin - Schenectady NY, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

B65G 53/40

US Classification:

406 73, 406 14

Abstract:

A system for controlling gas leakage in a solids delivery system is provided. The system includes a bulk solids pump comprising an inlet for a particulate material and an outlet for discharge of said particulate material. The system also includes a buffer gas channel configured to impede backflow of process gas into the bulk solids pump, such as from a downstream system or process. The system further includes a pressure differential system configured to control a flow rate of the buffer gas and maintain a positive differential in pressure between the buffer gas and the process gas.

US Patent:

8544633, Oct 1, 2013

Filed:

Mar 18, 2011

Appl. No.:

13/052000

Inventors:

John S. Stevenson - Anaheim CA, US
Derek L. Aldred - Granada Hills CA, US
Jeffery A. Rader - Burbank CA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B65G 17/36

US Classification:

198708, 198707, 198704

Abstract:

A system is provided with a segmented solid feed pump having a plurality of pump segments disposed along a closed-loop path. The plurality of pump segments are coupled together in series along the closed-loop path, and the plurality of pump segments move along the closed-loop path. Furthermore, each pump segment includes a holding receptacle.

US Patent:

8579103, Nov 12, 2013

Filed:

Oct 3, 2011

Appl. No.:

13/252044

Inventors:

John Saunders Stevenson - Anaheim CA, US
Derek Leslie Aldred - Granada Hills CA, US
Jeffrey Allen Rader - Burbank CA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B65G 17/12
B65G 31/02
B65G 31/04
B65G 19/16

US Classification:

198716, 198640, 198642, 198701, 198705, 198617, 406 99

Abstract:

A system includes a solid feed pump configured to transport a solid feedstock. The solid feed pump includes at least one passage for the transport of the solid feedstock. The solid feed pump also includes at least one movable wall configured to move along the passage. The solid feed pump further includes a retractable gripping element configured to extend from the at least one movable wall into the at least one passage to grip a portion of the solid feedstock. In addition, the retractable gripping element is configured to retract away from the at least one passage.

US Patent:

20080154177, Jun 26, 2008

Filed:

Nov 20, 2007

Appl. No.:

11/943413

Inventors:

Oscar E. Hyman - North East Poulsbo WA, US
David N. White - San Juan Capistrano CA, US
Larry L. Wilson - Poway CA, US
John W. Stevenson - Carlsbad CA, US
Jay G. Moubayed - Aliso Viejo CA, US
Linda Thomas - Laguna Niguel CA, US

Assignee:

Baxter International Inc. - Deerfield IL
Baxter Healthcare S.A. - Zurich

International Classification:

A61M 5/142
A61M 31/00

US Classification:

604 19, 604500

Abstract:

A system and method for remote monitoring and/or management of infusion therapies. A user can monitor and manage server-connected pumps at a remote location, such as a computer or PDA. Pumps located at an institution, such as a hospital or patients home, are connected, for example, via the Internet to a server that includes a database of information. A user can operate the pump, from a remote location, by using an interface displayed on the remote site. The operator can manage pump operations by use of the interface. In this context, the user can turn the pump on and off, select infusion rates, dose amounts, etc. all from the convenience of the remote location.

US Patent:

20090107046, Apr 30, 2009

Filed:

Sep 12, 2008

Appl. No.:

12/209711

Inventors:

Thomas Frederick Leininger - Chino Hills CA, US
Aaron John Avagliano - Houston TX, US
John Saunders Stevenson - Yorba Linda CA, US
John Duckett Winter - Denver CO, US

International Classification:

C10J 3/30
C10J 3/46

US Classification:

48 86 R, 48202

Abstract:

A fuel feed system for use in a gasification system includes a feed preparation section, a pressurization and conveyance section, and a slag additive section. The feed preparation section is configured to grind the fuel to a predetermined size and to adjust the moisture content within the particulate fuel. The pressurization and conveyance section is coupled in flow communication with the feed preparation section, and includes at least one solids pump configured to receive a flow of the particulate fuel at a first pressure and discharge the particulate fuel at a second pressure. The slag additive section is configured to feed a slag additive mixture into the gasifier and to substantially control the total water content within the gasification system.

US Patent:

20090158664, Jun 25, 2009

Filed:

Dec 20, 2007

Appl. No.:

11/961222

Inventors:

John Saunders Stevenson - Yorba Linda CA, US
Steven Craig Russell - Houston TX, US
Aaron John Avagliano - Houston TX, US

International Classification:

C10J 3/30

US Classification:

48210, 414147

Abstract:

A method for transporting a solid particulate within a gasifier system is provided. The method includes discharging solid particulate through an inlet into an opening defined within a rotor, wherein the inlet and the solid particulate are at a first pressure. The method further includes rotating the rotor such that at least one end of the opening is aligned in flow communication with a duct at a second pressure that is different from the first pressure. The solid particulate is discharged from the rotor opening through an outlet such that the solid particulate is at the second pressure, and the rotor is rotated such that at least one end of the rotor opening is aligned in flow communication with a pressure source that is at approximately the first pressure, and such that the opening is at the first pressure.

US Patent:

20090178338, Jul 16, 2009

Filed:

Dec 31, 2008

Appl. No.:

12/347614

Inventors:

Thomas Frederick Leininger - Chino Hills CA, US
John Saunders Stevenson - Yorba Linda CA, US

International Classification:

C10J 3/50
C10L 3/00

US Classification:

48 86 R, 48197 FM

Abstract:

A method of startup for a gasification system includes assembling a fuel mixture for use by a gasifier at a fuel mixture assembly point, wherein the fuel mixture includes a quantity of particulate solid fuel and a quantity of non-ventable carrier gas. The method includes channeling the fuel mixture through a first conduit to a fuel mixture disassembly system including a non-ventable carrier gas removal apparatus, establishing a substantially steady flow of the fuel mixture within the first conduit, and redirecting the fuel mixture through a second conduit to the gasifier to facilitate gasifier startup.