Charles Durrell Hendricks

US Patent:

41900162, Feb 26, 1980

Filed:

Mar 13, 1979

Appl. No.:

6/020121

Inventors:

Charles D. Hendricks - Livermore CA

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

G21B 100

US Classification:

118724

Abstract:

A method and apparatus using cold gas jets for producing a substantially uniform layer of cryogenic materials on the inner surface of hollow spherical members having one or more layers, such as inertially imploded targets. By vaporizing and quickly refreezing cryogenic materials contained within a hollow spherical member, a uniform layer of the materials is formed on an inner surface of the spherical member. Basically the method involves directing cold gas jets onto a spherical member having one or more layers or shells and containing the cryogenic material, such as a deuterium-tritium (DT) mixture, to freeze the contained material, momentarily heating the spherical member so as to vaporize the contained material, and quickly refreezing the thus vaporized material forming a uniform layer of cryogenic material on an inner surface of the spherical member.

US Patent:

41200160, Oct 10, 1978

Filed:

Nov 5, 1976

Appl. No.:

5/739171

Inventors:

Charles D. Hendricks - Livermore CA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

B05B 502

US Classification:

361228

Abstract:

A light-weight, portable power pack for supplying a high voltage output to an electrostatic spray gun from a low voltage input is disclosed. The power pack is cylindrical in shape with an axial opening adapted to receive the discharge channels of the spray gun so that it may be mounted on and may form a part of the spray gun and is detachable therefrom for replacement purposes. The power pack comprises a power supply circuit including a square wave oscillator connected through a square-loop, tape-wound core transformer to a voltage multiplier network for converting a low voltage DC to a high voltage DC for induction charging of material discharged from the spray gun, the circuit being encapsulated in an epoxy resin material to provide a suitable mounting case therefor. The case is molded into a suitable shape and is attached to the front of the gun by means of screws, bolts, a bayonet type connection or other suitable fastening means, the power pack being provided with external contacts which serve to engage corresponding contacts on the spray gun to provide an electrical connection through the gun to the power source, which may be a battery pack carried by the operator, and to engage coresponding contacts on the inductive charging device for the spray gun. The power pack can form the forward barrel portion of the spray gun with the discharge channels extending through the center of the case, or can be incorporated into detachable accessories such as a gas shroud forming chamber mountable on the forward barrel portion.

US Patent:

43223788, Mar 30, 1982

Filed:

Feb 8, 1980

Appl. No.:

6/119909

Inventors:

Charles D. Hendricks - Livermore CA

Assignee:

University of Illinois Foundation - Urbana IL

International Classification:

B29C 2300

US Classification:

264 7

Abstract:

The disclosure is directed to a method for producing relatively uniform hollow spheres of a substance, the hollow spheres being formed with a gas therein as a result of the production process. The spheres, formed for example of hydrogen isotopes, are particularly useful as a fuel target for laser fusion applications. In accordance with the method of the invention, a jet of the substance of which the spheres are to be formed is provided in liquid form. Relatively uniform gas bubbles are injected into the liquid jet. In this manner, the bubbles break up or separate the liquid jet into relatively uniform hollow spheres of the substance, each with a bubble of the gas inside. The hollow spheres can be visualized as liquid droplets, each having a relatively uniform gas bubble therein. In accordance with a feature of the invention, a periodic mechanical disturbance, such as is obtained by exciting an ultrasonic transducer, is introduced to a gas stream, and tends to cause the gas stream to form relatively uniform bubbles within the liquid droplets.

US Patent:

39858413, Oct 12, 1976

Filed:

Nov 6, 1975

Appl. No.:

5/629244

Inventors:

Robert J. Turnbull - Urbana IL
Christopher A. Foster - Champaign IL
Charles D. Hendricks - Livermore CA

Assignee:

The United States of America as represented by the United States Energy
Research and Development Administration - Washington DC

International Classification:

C01B 400

US Classification:

264 9

Abstract:

A method is provided for producing solid, evacuated microspheres comprised of hydrogen. The spheres are produced by forming a jet of liquid hydrogen and exciting mechanical waves on the jet of appropriate frequency so that the jet breaks up into drops with a bubble formed in each drop by cavitation. The drops are exposed to a pressure less than the vapor pressure of the liquid hydrogen so that the bubble which is formed within each drop expands. The drops which contain bubbles are exposed to an environment having a pressure just below the triple point of liquid hydrogen and they thereby freeze giving solid, evacuated spheres of hydrogen.

US Patent:

41636376, Aug 7, 1979

Filed:

Sep 29, 1978

Appl. No.:

5/947665

Inventors:

Charles D. Hendricks - Livermore CA

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

B22D 1101

US Classification:

425 6

Abstract:

Method and apparatus for producing small hollow spheres of glass, metal or plastic, wherein the sphere material is mixed with or contains as part of the composition a blowing agent which decomposes at high temperature (T. gtoreq. 600. degree. C. ). As the temperature is quickly raised, the blowing agent decomposes and the resulting gas expands from within, thus forming a hollow sphere of controllable thickness. The thus produced hollow spheres (20 to 10. sup. 3. mu. m) have a variety of application, and are particularly useful in the fabrication of targets for laser implosion such as neutron sources, laser fusion physics studies, and laser initiated fusion power plants.

US Patent:

H8729, Jan 1, 1991

Filed:

Sep 15, 1987

Appl. No.:

7/096200

Inventors:

Charles D. Hendricks - Livermore CA

Assignee:

The United States of America as represented by the Department of Energy - Washington DC

International Classification:

B05D 306

US Classification:

427 531

Abstract:

A method for applying novel coatings to substrates is provided. The ends of multiplicity of rods of different materials are melted by focused beams of laser light. Individual electric fields are applied to each of the molten rod ends, thereby ejecting charged particles that include droplets, atomic clusters, molecules, and atoms. The charged particles are separately transported, by the accelerations provided by electric potentials produced by an electrode structure, to substrates where they combine and form the coatings. Layered and thickness graded coatings comprised of hithereto unavailable compositions, are provided.

US Patent:

49138073, Apr 3, 1990

Filed:

Oct 26, 1988

Appl. No.:

7/262632

Inventors:

Charles D. Hendricks - Livermore CA

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

B03B 400
B07B 400

US Classification:

209461

Abstract:

Method and apparatus (10) are provided for separating and classifying particles (48,50,56) by dispersing the particles within a fluid (52) that is upwardly flowing within a cone-shaped pipe (12) that has its large end (20) above its small end (18). Particles of similar size and shape (48,50) migrate to individual levels (A,B) within the flowing fluid. As the fluid is deflected by a plate (42) at the top end of the pipe (12), the smallest particles are collected on a shelf-like flange (40). Ever larger particles are collected as the flow rate of the fluid is increased. To prevent particle sticking on the walls (14) of the pipe (12), additional fluid is caused to flow into the pipe (12) through holes (68) that are specifically provided for that purpose. Sticking is further prevented by high frequency vibrators (70) that are positioned on the apparatus (10).

US Patent:

41338545, Jan 9, 1979

Filed:

Jun 16, 1977

Appl. No.:

5/807108

Inventors:

Charles D. Hendricks - Livermore CA

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

B01J 202

US Classification:

264 10

Abstract:

Method for producing small hollow spheres of glass, metal or plastic, wherein the sphere material is mixed with or contains as part of the composition a blowing agent which decomposes at high temperature (T. gtorsim. 600. degree. C). As the temperature is quickly raised, the blowing agent decomposes and the resulting gas expands from within, thus forming a hollow sphere of controllable thickness. The thus produced hollow spheres (20 to 10. sup. 3. mu. m) have a variety of application, and are particularly useful in the fabrication of targets for laser implosion such as neutron sources, laser fusion physics studies, and laser initiated fusion power plants.