Paul A Thibault

US Patent:

50598643, Oct 22, 1991

Filed:

Dec 22, 1989

Appl. No.:

7/455527

Inventors:

Andre C. Bouchard - Peabody MA
Paul Thibault - Danvers MA
Tom Haraden - Ipswich MA

Assignee:

GTE Products Corporation - Danvers MA

International Classification:

H05B 4114
H01J 1734

US Classification:

315 56

Abstract:

A negative glow discharge lamp, which includes a light transmitting envelope containing a noble gas film material and a pair of electrodes disposed in the envelope. Ballast capacitors are placed within the base of the lamp and preferably within a cavity formed within the wall of the base surrounding a necked-down portion of the envelope.

US Patent:

50251902, Jun 18, 1991

Filed:

Dec 30, 1987

Appl. No.:

7/139396

Inventors:

Andre C. Bouchard - Peabody MA
Paul A. Thibault - Danvers MA
Radomir Lagushenko - Brookline MA
Jakob Maya - Brookline MA

Assignee:

GTE Products Corporation - Danvers MA

International Classification:

H01J 6164

US Classification:

313619

Abstract:

A glow discharge lamp that includes a light transmitting envelope containing a noble gas fill material and a pair of electrodes disposed in the envelope. Lead-in wires coupled to the electrodes and extend to and are hermetically sealed in the envelope The electrodes are disposed in oppositely spaced positions in the envelope preferably upper and lower positions with the electrodes positioned outside of the bulbous region of the envelope to thereby retard the formation of deposits at the main bulbous region of the envelope.

US Patent:

49394177, Jul 3, 1990

Filed:

Dec 20, 1988

Appl. No.:

7/287311

Inventors:

Oscar Biblarz - Swampscott MA
Joseph D. Michael - University Hgts. OH
Paul Thibault - Danvers MA

Assignee:

GTE Products Corporation - Danvers MA

International Classification:

H01J 6154

US Classification:

313595

Abstract:

A high pressure sodium arc tube assembly includes a light-transmitting arc tube containing a fill material including sodium and mercury, a pair of electrodes sealed in opposite ends of the arc tube, and a filament or other resisitive member located within the arc tube and extending between opposite ends thereof. The filament is electrically connected to the electrodes. The filament provides a sufficient electric field and an abundance of electrons dispersed throughout the discharge region to initiate an arc discharge when the electrodes are energized. The filament is selected to produce an electric field in the discharge region prior to initiation of arc discharge of at least 20 volts per centimeter. After an arc discharge is initiated, the voltage between the electrodes drops, and the filament is partially short-circuited by the arc discharge. The filament provides fast initial starting and fast hot restarting, while eliminating the requirement for high voltage starting pulses.

US Patent:

49049003, Feb 27, 1990

Filed:

Jul 10, 1989

Appl. No.:

7/377781

Inventors:

Andre C. Bouchard - Peabody MA
Paul A. Thibault - Danvers MA

Assignee:

GTE Products Corporation - Danvers MA

International Classification:

H01J 61067
H01J 6164
H01J 6142

US Classification:

313491

Abstract:

A glow discharge lamp that includes a light transmitting envelope containing a noble gas fill material and a pair of electrodes disposed in the envelope. Lead-in wires couple to the electrodes and extend to and are hermetically sealed in the envelope. The anode electrodes is comprised of a refractory metal piece, preferably a molybdenum foil strip, supported from an end of a single lead-in wire that is preferably swagged to the metal strip.

US Patent:

46785205, Jul 7, 1987

Filed:

Feb 4, 1985

Appl. No.:

6/698216

Inventors:

Andre C. Bouchard - Peabody MA
Paul A. Thibault - Danvers MA
Radomir I. Lagushenko - Brookline MA

Assignee:

GTE Products Corporation - Danvers MA

International Classification:

C23C 814

US Classification:

148 635

Abstract:

Electrical shorting between dense arrangements of electrical lead-ins having a normal operating potential difference therebetween in an arc sustaining atmosphere is substantially avoided by providing the lead-ins with an adherent, flexible, oxide coating. The lead-ins are preferably formed from a nickel-iron alloy.

US Patent:

48368164, Jun 6, 1989

Filed:

May 6, 1988

Appl. No.:

7/191104

Inventors:

Andre C. Bouchard - Peabody MA
Paul A. Thibault - Danvers MA

Assignee:

GTE Products Corporation - Danvers MA

International Classification:

H01J 904

US Classification:

445 51

Abstract:

A method of treating a tungsten cathode that is comprised of coating the surface of the tungsten cathode with a triple carbonate suspension. The coated tungsten cathode is placed in a heated oxidizing environment (e. g. , air, oxygen, or carbon dioxide) and heated for a sufficient amount of time in order to form a diffuse coating of triple carbonates and tungsten oxide. Thereafter, the triple carbonates are reduced to their respective oxides by passing heater current through the tungsten cathode. When used in conjunction with the manufacture of a fluorescent lamp, the formation of this diffuse coating of carbonates enhances the chances of forming barium tungstate during the cathode activation process. As a result, the life of the fluorescent lamp is increased and the amount of phosphor darkening is reduced.

US Patent:

49356640, Jun 19, 1990

Filed:

Sep 20, 1988

Appl. No.:

7/246607

Inventors:

Fred Whitney - Salem MA
Paul A. Thibault - Danvers MA
Jakob Maya - Brookline MA

Assignee:

GTE Products Corporation - Danvers MA

International Classification:

H01J 6302

US Classification:

313493

Abstract:

A low pressure mercury vapor discharge lamp having a double-tube type discharge vessel consisting of a closed outer glass bulb and an inner glass tube coaxially disposed within the outer bulb. An electrode is disposed in the inner glass tube, while a ring-shaped electrode structure is disposed in the outer envelope outside the inner glass tube. The electrode structure completely surrounds the inner glass tube and includes a pair of lead-in wires and a pair of semicircular electrode sections. Preferably, an inert gas having a pressure within the range of from about 4. 0 to 6. 0 torr and a quantity of mercury are contained within the lamp. The lamp of the present invention provides a fully diffused discharge without requiring an expensive transistor switching circuit or a permanent magnet to rotate the discharge about the inner tube.

US Patent:

46980407, Oct 6, 1987

Filed:

Oct 22, 1986

Appl. No.:

6/921308

Inventors:

Andre C. Bouchard - Peabody MA
Paul A. Thibault - Danvers MA

Assignee:

GTE Products Corporation - Danvers MA

International Classification:

H01J 924

US Classification:

445 26

Abstract:

A method of making a compact fluorescent lamp by providing a sealed, exhausted and prefilled light emitting capsule which is mounted within a jacket formed from a glass transparent to a given range of radiation. The jacket is then exhausted, filled and sealed with the same pressure and type buffer gas as is contained in the light emitting capsule. A laser then pierces the capsule allowing communication of gases in the outer jacket with those in the light emitting capsule. This permits a much faster exhaust sequence for the light emitting portion of the lamp and outer jacket.