Thomas E Dougherty

US Patent:

6534776, Mar 18, 2003

Filed:

Apr 23, 2001

Appl. No.:

09/840314

Inventors:

Thomas F. Dougherty - Chagrin Falls OH
Trevor M. Rummel - Leetonia OH

Assignee:

Columbiana Boiler Company - Columbiana OH

International Classification:

G21F 512

US Classification:

2505061, 2505071

Abstract:

A vessel for the shipment of uranium hexafluoride includes a cylindrical wall closed by pair of approximately semi-ellipsoidal heads welded to form a sealed container. A service valve is located in one end. The valve is covered by a removable, watertight valve protection cover assembly. The vessel also includes a test port by means of which the integrity of the valve protection cover assembly may be tested after the cylinder has been filled with uranium hexafluoride and the valve protection assembly has been installed. The valve protection assembly is shaped so that it fits within the envelope of the standard 30B cylinders. The distal end of the valve protection assembly is recessed from a plane defined by the open end of the surrounding chime by at least one half inch, and preferably by  inch or more. Accordingly, the fits within an overpack already approved by the NRC and used by shippers of uranium hexafluoride.

US Patent:

8093573, Jan 10, 2012

Filed:

Sep 25, 2009

Appl. No.:

12/567396

Inventors:

Thomas F. Dougherty - Chagrin Falls OH, US

Assignee:

Columbiana Hi Tech LLC - Greensboro NC

International Classification:

G21F 5/12

US Classification:

2505071, 2505061

Abstract:

A vessel for storing and transporting hazardous substances, like for example Uranium Hexafluoride, includes a body having an internal region that is subdivided into two or more isolated regions. The vessel further includes end members that house ingress and egress valves. A cover assembly is affixed to the vessel to shield the valves from damage due to exposure and/or impact.

US Patent:

20140001381, Jan 2, 2014

Filed:

Mar 6, 2013

Appl. No.:

13/787231

Inventors:

Thomas F. DOUGHERTY - Chagrin Falls OH, US

Assignee:

COLUMBIANA HI TECH LLC - Greensboro NC

International Classification:

G21F 5/015

US Classification:

2505071, 53473

Abstract:

An overpack for receiving a steel cylinder, such as a stainless steel cylinder, containing uranium hexafluoride includes a semi-cylindrical top portion having an arcuate main body and opposing first and second semi-circular end members, and includes a semi-cylindrical bottom portion having an arcuate main body and opposing first and second semi-circular end members, with the first end members of the top and bottom portion being aligned, and the second end members of the top and bottom portion being aligned, and the overpack is disposed in a cradle.

US Patent:

20140027315, Jan 30, 2014

Filed:

Jul 25, 2013

Appl. No.:

13/951149

Inventors:

Thomas F. DOUGHERTY - Chagrin Falls OH, US

Assignee:

COLUMBIANA HI TECH LLC - Greensboro NC

International Classification:

F17C 1/00

US Classification:

2066

Abstract:

A cylinder for storage and transport of uranium hexafluoride includes a generally tubular main body with a distally arranged end member defining an interior region. An interior tubular member is received in the interior region. A tube end member is attached to an end of the tubular member opposite the end member. First and second chime ends are on respective ends of the main body. First and second chime end members are disposed in the first and second chime ends respectively. The end member, the interior tubular member and the tube end member form a first containment structure. The tubular main body, the first and second chime ends and the first and second chine end members form a second containment structure.

US Patent:

57715670, Jun 30, 1998

Filed:

Aug 29, 1996

Appl. No.:

8/705508

Inventors:

Brian M. Pierce - Moreno Valley CA
Norman H. Harris - Newhall CA
Thomas Kirk Dougherty - Playa del Rey CA
William W. Chen - Westchester CA
Florentino V. Lee - Culver City CA

Assignee:

Raytheon Company - Lexington MA

International Classification:

H01P 1100

US Classification:

29600

Abstract:

Methods of fabricating a porous ceramic composite having voltage-variable dielectric properties. The composite is made as follows. A polycrystalline ferroelectric powder, which is a ferroelectric perovskite such as barium strontium titanate, for example, is provided. The powder, a binder and a filler are then mixed in water to form a slurry. The powder-binder-filler slurry is then dried. The dried powder-binder-filler slurry is granulated. The granulated powder-binder-filler is pressed into a die. The binder and filler are then burned out to form a fragile porous ash-like structure. The porous structure is then sintered to form porous ceramic parts. The porous ceramic parts are then machined tiles. The machined porous tiles may then be tested for microwave properties. Fabrication methods for producing porous ferroelectric ceramic-polymer composite tiles or subaperture blanks and continuous transverse stub electronically scanned antenna plates or subapertures are also disclosed.