Spencer D Pack

US Patent:

8074895, Dec 13, 2011

Filed:

Apr 11, 2007

Appl. No.:

11/734260

Inventors:

Chien-Pei Mao - Clive IA, US
John Short - Norwalk IA, US
Jim Klemm - Des Moines IA, US
Royce Abbott - Des Moines IA, US
Nick Overman - West Des Moines IA, US
Spencer Pack - Urbandale IA, US
Audra Winebrenner - Des Moines IA, US

Assignee:

Delavan Inc - West Des Moines IA

International Classification:

B05B 1/08
B05B 3/04
F02M 7/22

US Classification:

2391022, 2391021, 239 4, 2395905, 239 92, 2395332, 261 38, 261 49, 261 501, 261 791

Abstract:

A fuel injection and mixing system is provided that is suitable for use with various types of fuel reformers. Preferably, the system includes a piezoelectric injector for delivering atomized fuel, a gas swirler, such as a steam swirler and/or an air swirler, a mixing chamber and a flow mixing device. The system utilizes ultrasonic vibrations to achieve fuel atomization. The fuel injection and mixing system can be used with a variety of fuel reformers and fuel cells, such as SOFC fuel cells.

US Patent:

20090255258, Oct 15, 2009

Filed:

Apr 11, 2008

Appl. No.:

12/082532

Inventors:

David H. Bretz - West Des Moines IA, US
Spencer D. Pack - Urbandale IA, US

Assignee:

Delavan Inc - West Des Moines IA

International Classification:

F02C 7/22

US Classification:

60737

Abstract:

An air-blast fuel injector is disclosed that includes an on-axis inner air circuit, a fuel circuit radially outboard of the inner air circuit, the fuel circuit having an axially converging pre-filming chamber and an axially diverging pre-filming surface extending from the pre-filming chamber to an exit annulus and an outer air circuit radially outboard of the fuel circuit communicating with the exit annulus of the axially diverging pre-filming surface.

US Patent:

20120069698, Mar 22, 2012

Filed:

Sep 17, 2010

Appl. No.:

12/884938

Inventors:

Spencer D. Pack - West Des Moines IA, US
Steven L. Smith - West Des Moines IA, US

Assignee:

Delavan Inc - West Des Moines IA

International Classification:

B01F 5/06

US Classification:

3661652, 3661651, 366336

Abstract:

A mixer for mixing immiscible fluids includes a mixer housing defining a flow passage therethrough from a first fluid inlet to an outlet thereof. An upstream portion of the flow passage defines a main longitudinal axis. A second fluid inlet is provided downstream of the first fluid inlet in fluid communication with the upstream portion of the flow passage. The second fluid inlet is offset with respect to the main longitudinal axis of the flow passage to introduce fluid along a path that is offset with respect to the main longitudinal axis for inducing swirl on fluids introduced at the first and second fluid inlets. In certain embodiments, a mixer section is included having a flow constriction defined in a downstream portion of the flow passage with a flow area smaller than that of the upstream portion of the flow passage for enhancing turbulent mixing of fluids therein.

US Patent:

20160377293, Dec 29, 2016

Filed:

Jun 25, 2015

Appl. No.:

14/750585

Inventors:

- West Des Moines IA, US
Spencer D. Pack - Urbandale IA, US
Gregory Zink - Des Moines IA, US
Jason A. Ryon - Carlisle IA, US
Fouad T. Khairallah - West Des Moines IA, US

International Classification:

F23R 3/28
F02C 7/22
F02C 7/24
F23R 3/12

Abstract:

In accordance with at least one aspect of this disclosure, a fuel injector system can include an air mixer defining an outer air circuit, at least one intermediate air circuit, and an inner air circuit. The fuel injector system can also include a fuel manifold defining a fuel circuit, at least a portion of which is operatively disposed within the air mixer such that the fuel circuit and the intermediate air circuit are in fluid communication with each other for atomization of fuel. At least one of the air mixer or the fuel manifold can be additively manufactured.

US Patent:

20150360287, Dec 17, 2015

Filed:

Jun 16, 2014

Appl. No.:

14/305522

Inventors:

- Des Moines IA, US
Spencer Pack - Urbandale IA, US
Matt Donovan - Ankeny IA, US

International Classification:

B22F 3/105
B22F 3/24

Abstract:

A method of additive manufacturing includes building a component having a top surface, attaching the component to a powder bed fusion plate that receives the component, filling the powder bed fusion chamber so the powder is flush with the top surface of the component, and adding a first layer of powdered metal level with the top surface of the component. The method of additive manufacturing also includes fusing the first layer of powdered metal to the top surface of the component to create a fusion joint, and building up an additively manufactured body from the top surface of the component in subsequent layers.

US Patent:

20140361493, Dec 11, 2014

Filed:

Jun 11, 2013

Appl. No.:

13/915217

Inventors:

- WEST DES MOINES IA, US
Gregory Zink - Des Moines IA, US
Spencer D. Pack - Urbandale IA, US

International Classification:

F16J 15/32

US Classification:

277549

Abstract:

A sealing device is provided for use with an assembly having radially inner and outer parts in fluid communication and movable relative to one another. The sealing device includes a first annular lip which defines an opening for receiving the radially inner part, and an annular channel disposed radially outward of the opening. The first annular lip is configured and adapted for deformation and compressive sealed engagement with the radially inner part while permitting movement of the radially inner part relative thereto. An annular body integrally formed with the first annular lip of the sealing device defines an interior space in communication with the annular channel and the opening. The annular body extends radially outward of the first annular lip and is configured and adapted for sealed engagement with the radially outer part.