Kenneth Speigel

US Patent:

41601874, Jul 3, 1979

Filed:

Sep 23, 1976

Appl. No.:

5/725793

Inventors:

Donald L. Say - Waterloo NY
Harry E. Smithgall - Seneca Falls NY
Kenneth Speigel - Seneca Falls NY

Assignee:

GTE Sylvania Incorporated - Stamford CT

International Classification:

H01J 2980
H01J 3920

US Classification:

313408

Abstract:

Improvement is provided in a color cathode ray tube of the post-deflection acceleration type, in the form of an operational system including related tube geometry. An electron barrier, consisting of a metallic film having a defined voltage penetration threshold, is adheringly disposed on the surface of the screen. The potential on the screen is in the order of substantially 20 to 40 kilovolts while the potential of the related color-selection electrode is more than substantially 72 percent and less than 85 percent of the screen potential thereby effecting a definitive voltage differential (. DELTA. V) therebetween that is substantially equal to or less than the voltage penetration threshold of the metallic film. The improvement in the system provides enhanced contrast and color purity in the screen display and minimizes background luminescence of the screen resultant from spurious impingement of secondary electrons generated in the tube.

US Patent:

42219914, Sep 9, 1980

Filed:

Dec 22, 1978

Appl. No.:

5/972636

Inventors:

Kenneth Speigel - Seneca Falls NY

Assignee:

GTE Products Corporation - Stamford CT

International Classification:

H01J 1970

US Classification:

313481

Abstract:

The invention provides a sealed effusive material structure for angular orientation within a cathode ray tube. The effusive material, which is disposed in an annular channelized container, is protectively sealed by a metallic covering that melts at a temperature above that encountered during panel-funnel sealing, and below that used for activation of the effusive material. Receptacle means integral with the container is provided to collect and retain the gravity flow of the melted covering material.

US Patent:

41971531, Apr 8, 1980

Filed:

Mar 14, 1979

Appl. No.:

6/020378

Inventors:

George Palty - Seneca Falls NY
Kenneth Speigel - Seneca Falls NY

Assignee:

GTE Sylvania Incorporated - Stamford CT

International Classification:

C09J 502

US Classification:

1563093

Abstract:

In one aspect of the invention a process for affixing a self-supporting film of emissive materials in a binder to a cathode support member to provide a cathode for a cathode ray tube includes the steps of depositing at least one drop of a liquid mixture containing a solvent for the binder of the film onto a cathode support member, contacting the liquid mixture with the self-supporting film, and preferentially evaporating the liquid mixture to cause the binder of the film to affix the film to the cathode support member. In another aspect of the invention, an improved liquid mixture for affixing a self-supporting film of emissive materials in a binder to a cathode support member includes at least two liquids miscible in all proportions with one liquid essentially a non-solvent and another higher boiling liquid a solvent for the binder of the film.

US Patent:

41751434, Nov 20, 1979

Filed:

Jan 2, 1979

Appl. No.:

6/000049

Inventors:

Kenneth Speigel - Seneca Falls NY

Assignee:

GTE Sylvania Incorporated - Stamford CT

International Classification:

B05D 512

US Classification:

427 71

Abstract:

A process for increasing the wetting capabilities of phosphors employed in color cathode ray tubes includes coating the phosphors with a wetting agent which is organic, substantially non-ionic, water or alcohol soluble at 20. degree. C. to 25. degree. C. , non-reactive with dichromate sensitized polyvinyl alcohol within the temperature range of about 20. degree. C. to 480. degree. C. and vaporizable at a temperature above about 60. degree. C. and below 480. degree. C. Use of the process reduces agglomeration of phosphor particles when used in dry phosphor screening techniques.

US Patent:

43163130, Feb 23, 1982

Filed:

Apr 14, 1980

Appl. No.:

6/140033

Inventors:

Kenneth Speigel - Seneca Falls NY

Assignee:

North American Philips Consumer Electronics Corp. - New York NY

International Classification:

H01J 904

US Classification:

29 2518

Abstract:

Critical spacings between the cathode and grid of an electron gun structure are enabled by a cathode structure including a removable spacer, such structure produced by first forming a layer of potentially electron emissive material on the cathode, then forming a solvent drop on the layer, and contacting the drop with a spacer to adhere the spacer to the layer.

US Patent:

49349767, Jun 19, 1990

Filed:

Dec 22, 1988

Appl. No.:

7/288582

Inventors:

Joseph E. Lane - Auburn NY
Kenneth Speigel - Seneca Falls NY

Assignee:

North American Philips Corporation - New York NY

International Classification:

H01J 922

US Classification:

445 52

Abstract:

A phosphor screen for a cathode ray tube employing an interference filter for projection television is produced by temporarily sealing the face panel and funnel of the tube toegether, forming the screen by a settling technique, and then separating the screened panel and funnel to allow access to the panel for further processing prior to permanently sealing the panel and funnel together.

US Patent:

44132034, Nov 1, 1983

Filed:

Sep 30, 1981

Appl. No.:

6/307125

Inventors:

Kenneth Speigel - Seneca Falls NY

Assignee:

North American Philips Consumer Electronics Corp. - New York NY

International Classification:

H01J 188
H01J 1942

US Classification:

313446

Abstract:

Critical spacings between the cathode and grid of an electron gun structure are enabled by a cathode structure including a removable spacer, such structure produced by first forming a layer of potentially electron emissive material on the cathode, then forming a solvent drop on the layer, and contacting the drop with a spacer to adhere the spacer to the layer.

US Patent:

46475192, Mar 3, 1987

Filed:

Sep 13, 1985

Appl. No.:

6/775966

Inventors:

Kenneth Speigel - Seneca Falls NY

Assignee:

North American Philips Consumer Electronics Corp. - New York NY

International Classification:

G03C 500
G03B 2160

US Classification:

430 25

Abstract:

A method is shown in which a black, light-absorbing matrix is formed on the viewing surface of a rear-projection polymethyl methacrylate TV viewing screen in which there is use of a negative working photoresist composition comprising an aqueous solution of polyvinyl alcohol, a water-soluble dichromate and acetone as essentially the sole wetting agent.