Floyd R Pothoven

US Patent:

6517403, Feb 11, 2003

Filed:

Mar 31, 2000

Appl. No.:

09/509713

Inventors:

Anthony John Cooper - Escondido CA
Floyd R Pothoven - Bellflower CA

Assignee:

Anthony Cooper - Escondido CA
Floyd Pothoven - Bellflower CA

International Classification:

H01J 926

US Classification:

445 25, 445 41

Abstract:

The apparatus for sealing face plates ( ) and cathodes ( ) has three stations ( ). The first ( ) is a preheater, the second ( ) is an alignment and irradiation station and the third ( ) is a controlled cooling station. Beneath each station, a vacuum pump ( ) capable of drawing ultralow pressures is provided. The preheater is equipped with upper and lower banks of radiant heaters and reflectors ( ). The upper heaters are Provided above a quartz: window ( ) of a chamber ( ) constituting the station. The pressure in the preheater is pumped down to that in the alignment and irradiation station prior to opening of the gate valve between them and transfer of the face plate and cathode. At the alignment and irradiation station, further heaters ( ) are provided. Those above the face plate and cathode, the face plate being uppermost, are mounted on frames ( ) about hinges ( ), whereby they can be swung up to clear this stations top quartz window, exposing the face plate to the view of an optical system ( ) and a laser ( ). Manipulation controls ( ) are provided for manipulating the position of the face plate to be pixel alignment, as measured by the optical system ( ), with the cathode.

US Patent:

6666739, Dec 23, 2003

Filed:

Dec 14, 2000

Appl. No.:

09/737034

Inventors:

Floyd R. Pothoven - Bellflower CA
Terry A. Pothoven - Bellflower CA

Assignee:

Ceravision Technology Limited - Dublin

International Classification:

H01J 926

US Classification:

445 43, 445 40, 65 43

Abstract:

The lamp consists of a hollow tubular body with a closed end and an open end The body is of sintered ceramic material. A window is sealed across the open end, the window and the body being united by a layer of frit The window is of sapphire. Within the body is sealed an inert gas atmosphere and a pellet charge of excitable material In use, the lamp is subjected to RF electromagnetic radiation which heats it to 1000Â C. causes it to emit visible light via the sapphire.

US Patent:

6856092, Feb 15, 2005

Filed:

Dec 6, 2001

Appl. No.:

10/007652

Inventors:

Floyd R. Pothoven - Lakewood CA, US
Terry A. Pothoven - Lakewood CA, US

Assignee:

ITW, Inc. - Bellflower CA

International Classification:

H01J017/16

US Classification:

313634, 315344

Abstract:

A lamp has a body of sintered alumina ceramic material and an artificial sapphire window. The body is initially molded in green state and the window is pressed into a front recess. The combination is fired at a temperature of the order of 1500 C. , to fuse the body into a coherent pressure-tight state with the window. After partial cooling to the order of 600 C. , a pellet of excitable material is added through a rear, charging aperture. A disc of ceramic with frit is placed over the aperture. The disc is irradiated by laser to fuse the frit and the disc to the body, thus sealing the excitable material into the lamp.

US Patent:

6974359, Dec 13, 2005

Filed:

Jan 18, 2001

Appl. No.:

10/181643

Inventors:

Floyd R. Pothoven - Bellflower CA, US
Anthony J. Cooper - Murietta CA, US

Assignee:

Ceravision Technology Limited - Dublin

International Classification:

H01J009/00

US Classification:

445 24, 445 25

Abstract:

A visual has a multilayer ceramic substrate () with an emission layer () on its front face. The substrate is mounted on carrier () with a L-shaped cross-section, via the foot () of the L. A glass face plate () is on the top of the main limb () of the L. The face plate has a phosphor layer () on its inside surface. A succession () of vias and interconnects in the L provides connection from the substrate () to the phosphor layer. A band () of frit is screen printed onto the inside of the face plate, peripherally of phosphor layer. In a corresponding position on the top of the main limb, a groove () is formed. On assembly of the face plate to the carrier, the frit () fits into the groove (). The face plate abuts the top of the limb (), thereby defining the separation of the face plate and the emission substrate.

US Patent:

8241082, Aug 14, 2012

Filed:

Dec 23, 2005

Appl. No.:

11/794490

Inventors:

Charles Guthrie - San Jose CA, US
Donald Wilson - San Jose CA, US
Floyd Pothoven - Lakewood CA, US
Eddie Odell - Leicester, GB
Robin Devonshire - Sheffield, GB

Assignee:

Ceravision Limited - Milton Keynes

International Classification:

H01J 9/00

US Classification:

445 43, 445 42

Abstract:

A method of making an electrodeless incandescent bulb comprises the steps of:.

US Patent:

20130040529, Feb 14, 2013

Filed:

Jul 5, 2012

Appl. No.:

13/541838

Inventors:

Charles Guthrie - San Jose CA, US
Edwin Charles Odeil - Leicester, GB
Robin Devonshire - Sheffield, GB
Donald Wilson - San Jose CA, US
Floyd Pothoven - Lakewood CA, US

International Classification:

H01J 9/38

US Classification:

445 40, 445 39

Abstract:

The manufacture of an electrodeless bulb involves one end of a tube closed off, and a first neck is formed in the tube close to the closed end. A second neck is formed in the tube, close to the still open end; a metal halide pellet of known size is dropped into the tube and the tube is evacuated. With the vacuum being maintained heat is applied to the closed end, causing the metal halide pellet to sublime and with it the impurities. The impurities are drawn off, the vacuum being maintained and the metal halide condenses in the tube between the necks. Once the tube is cool, the evacuation is discontinued and the tube is refilled with noble gas and the quartz tube is sealed off at the second neck.

US Patent:

20130052904, Feb 28, 2013

Filed:

Feb 8, 2011

Appl. No.:

13/578132

Inventors:

Floyd Pothoven - Lakewood CA, US
Andrew Simon Neate - Fairford Leys, GB

International Classification:

H01J 9/00

US Classification:

445 58

Abstract:

A method of applying a Faraday cage to a lucent resonator, the resonator having a void containing microwave-excitable material and being adapted for microwave resonance in the resonator and within the Faraday cage for driving a light emitting plasma in the void, the method consisting in the steps of: deposition of a conductive material onto the lucent resonator; applying, patterning and developing a photoresist material over the conductive material to leave the conductive material exposed where it is not required; removing the conductive material where not required and the photoresist material from the required conductive material, leaving a reticular network of conductive material providing a Faraday cage and depositing a layer of protective material over the cage of conductive material.

US Patent:

20140077693, Mar 20, 2014

Filed:

Sep 19, 2012

Appl. No.:

13/623007

Inventors:

Floyd R. Pothoven - Lakewood CA, US
Andrew Simon Neate - Buckinghamshire, GB
Martyn Roscoe - Leicestershire, GB
Barry Preston - Leicestershire, GB

International Classification:

B32B 33/00
H01J 61/30

US Classification:

313634, 156293

Abstract:

Operation to produce an intermediate product for a crucible for a LUWPL is as follows: