Jeffrey D Robison

US Patent:

6685167, Feb 3, 2004

Filed:

Apr 9, 2001

Appl. No.:

09/829583

Inventors:

Jeffrey C. Robison - Provo UT
Stephen R. Chipman - Provo UT
Michael R. Luque - Orem UT
Craig C. Smith - Provo UT

Assignee:

Caldera Engineering LC - Provo UT

International Classification:

F16K 3100

US Classification:

251368, 251210

Abstract:

A new valve device adapted specifically for use with hot erosive flow streams is provided. This valve device has an inner plug head, which modulates and throttles the amount of flow passing through the valve when the valve is open. The inner plug head is shaped so that as the valve plug approaches the closed position, the inner plug head blocks most of the flow path, reducing the flow to a small amount. The valve of this invention has an outer plug head the contacts the valves outer ceramic seat as the valve reaches the closed position. Contact between the outer ceramic seat and the outer ceramic plug entirely shuts off flow through the valve.

US Patent:

6695010, Feb 24, 2004

Filed:

Dec 1, 2000

Appl. No.:

09/728001

Inventors:

Jeffrey C. Robison - Provo UT
Stephen R. Chipman - Provo UT
Michael R. Luque - Orem UT
Craig C. Smith - Provo UT

Assignee:

Caldera Engineering LC - Provo UT

International Classification:

F15D 102

US Classification:

138 39, 138 44

Abstract:

A new segmented choke is provided. Designed to reduce thermal stresses created when the fluid temperature fluctuate, this invention is constructed of segmented ceramic members fit within a relatively thin-walled retainer, shrunk fit thereto, thereby allowing the retainer to be more compliant. Shorter, multiple segments used in this invention are also easier to manufacture, can be produced with tighter tolerances, provide easier access thereby reducing maintenance costs and allow for the inclusion of sensors in the individual ceramic segments. This invention also provides improvements in size, manufacturing cost, ease of use and operating efficiency over prior choke devices.

US Patent:

7237574, Jul 3, 2007

Filed:

May 12, 2005

Appl. No.:

11/127918

Inventors:

Stephen R. Chipman - Provo UT, US
Michael R. Luque - Orem UT, US
Herman Pieterse - Tucson AZ, US
Jeffrey C. Robison - Provo UT, US
Craig C. Smith - Provo UT, US

Assignee:

Caldera Engineering LLC - Provo UT

International Classification:

F16K 51/00

US Classification:

138 44, 251122

Abstract:

A nozzle design and method for designing such a nozzle being adapted for three phase slurry flow from the choke into the flash tank during pressure let-down in autoclave mining operations that uses a selection of the expansion ratio in the choke to select a nozzle dispersion angle to select a spread of the flow over the slurry pool in the flash tank, to generally maximize the use of the pool for energy dissipation without causing undo wear and tear on the tank walls.

US Patent:

8251348, Aug 28, 2012

Filed:

Jan 28, 2009

Appl. No.:

12/361021

Inventors:

Jeffrey C. Robison - Provo UT, US
Frank Redd - Orem UT, US

Assignee:

Caldera Engineering, LC - Provo UT

International Classification:

F16K 1/00
F16K 15/00
F16K 47/00
F16L 55/02

US Classification:

251333, 251118, 251125

Abstract:

The present invention relates to valve plugs for reducing erosion of the valve plug head and/or seat. More specifically, this invention comprises a valve plug incorporating a choke transfer trim that reduces the time of exposure of the plug head and/or seat to high velocity and high pressure drop at the interface of the plug head and seat when the valve is in the closed position. The choke transfer trim transfers the flow control area of the valve away from the plug head/seat interface to a location downstream, thereby reducing erosion at the interface between the valve plug head and/or seat that is typically used for fluid throttling and shut off.

US Patent:

20020069923, Jun 13, 2002

Filed:

Jun 29, 2001

Appl. No.:

09/895039

Inventors:

Jeffrey Robison - Provo UT, US
Stephen Chipman - Provo UT, US
Michael Luque - Orem UT, US
Craig Smith - Provo UT, US

Assignee:

Caldera Engineering, LC

International Classification:

F15D001/00

US Classification:

138/044000, 138/039000, 138/038000

Abstract:

A new flash tube device adapted specifically for use with hot erosive flow streams is provided. This flash tube uses an extension cone fixed to the outlet of a choke to create an extension choke to insure that the shock wave occurs within the extension choke, thereby decreasing the flow velocity to a subsonic level, reducing the kinetic energy of the flow as it leaves the extension choke. By moving the shock wave into the extension choke, this device dramatically improves the working life of the flash tank, allowing for easier separation of fluid/solids and vapor in the flash tank.

US Patent:

20100077324, Mar 25, 2010

Filed:

Sep 23, 2008

Appl. No.:

12/235714

Inventors:

Paul Harrington - Seattle WA, US
Alin Constatin - Bellevue WA, US
Matthew Johnson - Kirkland WA, US
Jean-Pierre Duplessis - Redmond WA, US
C. Douglas Hodges - Sammamish WA, US
Jeffrey David Robison - Redmond WA, US
Christopher James McGuire - Monroe WA, US

Assignee:

MICROSOFT CORPORATION - Redmond WA

International Classification:

G06F 3/01

US Classification:

715762

Abstract:

User interface functionality in a presentation layer is coupled with data and data processing functionality of an application in a domain-specific layer. A UI-element-factory-registrar supports registration of a UI-element-factory with the domain-specific layer for invoking a UI-element to create a UI-element object. The UI-element object is bound to a domain-specific data-source object. The presentation layer may be asynchronously notified of changes in the data-source object. Data-converter objects may be provided to convert between data formats, e.g., from a native code domain-specific layer format to a managed code presentation layer format.

US Patent:

20100140530, Jun 10, 2010

Filed:

Dec 9, 2008

Appl. No.:

12/330561

Inventors:

Jeffrey C. Robison - Provo UT, US

Assignee:

CALDERA ENGINEERING, LLC - Provo UT

International Classification:

F16K 25/00
B21D 51/16

US Classification:

251368, 29890124, 29890132

Abstract:

In accordance with various aspects of the present invention, methods and apparatuses for designing and configuring dissimilar material retention, specifically a valve plug assembly, are disclosed. The methods and apparatuses enable the application of a wider range of materials in a valve plug assembly than previous valve plug assemblies, and also increase the operational temperature range of the valve plug assembly. In an exemplary embodiment, a valve plug assembly comprises a plug head, a collet surrounding the plug head, a plug base adjacent to the collet, and a retainer surrounding the tapered outside surface of the collet and the plug base, where the plug head extends past the collet and the retainer. The valve plug assembly is configured to create an interference fit of the various components.

US Patent:

20110033018, Feb 10, 2011

Filed:

Aug 10, 2009

Appl. No.:

12/538725

Inventors:

John Roger Peterson - Provo UT, US
M. Robert Mock - Midway UT, US
Jeffrey C. Robison - Provo UT, US
Stephen R. Chipman - Provo UT, US
Grant Jay Brockbank - Springville UT, US
Michael R. Luque - Orem UT, US

Assignee:

CALDERA ENGINEERING, LC - Provo UT

International Classification:

G21B 1/00
B32B 37/14
F16K 99/00

US Classification:

376150, 156 94, 251368

Abstract:

Systems and methods for bonding ceramic materials are disclosed herein. In various embodiments, a process is provided comprising the steps of disposing a bonding material at least partially adjacent to a surface of a first silicon carbide component and at least partially adjacent to a surface of a second silicon carbide component, and bonding said first silicon carbide component to said second silicon carbide component by heating, wherein said bonding material comprises vanadium or titanium.