Richard V Culbertson

US Patent:

7740682, Jun 22, 2010

Filed:

Jul 19, 2006

Appl. No.:

11/309243

Inventors:

Randall C. Ragan - Rancho Santa Fe CA, US
Randall M. Ragan - Rancho Santa Fe CA, US
Richard Vaughn Culbertson - Poway CA, US

International Classification:

B22F 1/00
C09C 1/62
C04B 14/10
C08K 3/08

US Classification:

75248, 10628717, 10628718, 106486, 106487, 106811, 524780

Abstract:

An improved composite material, and method of manufacture thereof, comprising varying amounts tungsten powder, or metal/alloy powder of similar density, and clay or silicone is disclosed. The improved composite material may be useful as a replacement for lead and lead-based composites where similar densities are required but the use of lead is undesirable. The disclosed composite material permits a large variety of tungsten powder particle sizes to be utilized and results in improved ductility over known tungsten powder composites.

US Patent:

D666363, Aug 28, 2012

Filed:

Feb 24, 2011

Appl. No.:

29/386044

Inventors:

Richard Culbertson - Poway CA, US

Assignee:

American Ceramic Technology - Poway CA

International Classification:

2903

US Classification:

D291014

US Patent:

D692618, Oct 29, 2013

Filed:

Feb 24, 2011

Appl. No.:

29/386045

Inventors:

Richard Culbertson - Poway CA, US

Assignee:

American Ceramic Technology - Poway CA

International Classification:

2903

US Classification:

D291014

US Patent:

20190080807, Mar 14, 2019

Filed:

Sep 14, 2017

Appl. No.:

15/704738

Inventors:

- Anderson SC, US
Virgil Irick - Anderson SC, US
Richard Culbertson - Poway CA, US

International Classification:

G21F 1/12
H01F 1/053
G21F 3/00

Abstract:

An apparatus and method for shielding against radiation and providing thermal insulation is disclosed. The apparatus includes multiple layers including an inner layer, an outer layer, and a radiation shielding layer composed of materials such a tungsten sheet, multiple tungsten sheets, staggered rows of tungsten rods, and/or a polymer radiation shield composed of a polymer and radiation attenuating material. Insulation layers may also be incorporated into the apparatus. The method for protecting against radiation includes the steps of providing a radiation shielding apparatus and securing such apparatus to a radiation emitting structure.