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US3611009A - Fluorescent light fixture - Google Patents

Fluorescent light fixture Download PDF

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Publication number
US3611009A
US3611009A US834048A US3611009DA US3611009A US 3611009 A US3611009 A US 3611009A US 834048 A US834048 A US 834048A US 3611009D A US3611009D A US 3611009DA US 3611009 A US3611009 A US 3611009A
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United States
Prior art keywords
ballast
chamber
contact
wall
globe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US834048A
Inventor
William J Mcneil
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WILLIAM J MCNEIL
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WILLIAM J MCNEIL
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Publication date
Application filed by WILLIAM J MCNEIL filed Critical WILLIAM J MCNEIL
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/56—One or more circuit elements structurally associated with the lamp
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/10—Shields, screens, or guides for influencing the discharge
    • H01J61/103—Shields, screens or guides arranged to extend the discharge path
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/05—Starting and operating circuit for fluorescent lamp

Definitions

  • This invention relates to a fluorescent light fixture that may be used in a conventional screw-type incandescent light fixture. It is composed of upper and lowergas chambers with the lower chamber having upper and lower parallel glass panes joined at their outer edges by an annular pane and at their centers by a glass core.
  • the lower chamber has the elements and ingredients for providing fluorescent .lighting.
  • the upper chamber a separable into parts and supportsa ballast therein. The upper of the two parts has a screw-type connection for an incandescent light fixture.
  • a globe structure composed of a lower chamber having a pair of glass panes spaced apart and sealed at their edges to form a sealed chamber.
  • the glass panes have a phosphor coating on their inner surfaces and the chamber is filled with a mercury gas. Suitable electrical filaments for exciting the gas are provided adjacent the panes andserve to illuminate the surfaces.
  • the globe structure also includes an upper ballast-containing chamber with a screw-type connection to an incandescent light fixture.
  • the upper chamber has therein electrical connections extending from the screw-type connection to the ballast, and from the ballast to the electrical filaments.
  • FIG. 1 is a side view of the light fixture.
  • FIG. 2 is an enlarged side view of the fixture mostly in section.
  • FIG. 3 is a bottom view of the fixture with part thereof being in section to show internal structure.
  • FIG. 4 is a top and side perspective view of the ballast.
  • FIG. 5 is a bottom and side perspective view of the ballast.
  • FIG. 6 is an enlarged vertical sectional view of a juncture in the upper ballast chamber.
  • the fixture I0 is composed of a lower chamber portion 11 having a pair of upper and lower horizontal glass panes 16, 17 spaced vertically apart.
  • the panes 16, 17 are provided with and are integrally interconnected by a central vertical glass core and an outer annular glass wall or pane 18 so as to create or define a hermetically sealed lower chamber or compartment 19.
  • the inner surfaces of panes 15-18 are provided, at least in part with a lining or coating 20 of a phosphor material.
  • Retained in the chamber 19 adjacent the upper. and lower panels adjacent the core 15 and outer wall 18 respectively are a pair of filament panels 22, 23.
  • the upper panel 16 has a downwardly projecting wall 24 outward of the upper inner filament 22 and the lower wall 17 has an upwardly projecting round wall 25 inward of the outer filament 23.
  • the fixture 10 also includes an upper chamber portion '30 that has a ballast control member 31 contained therein.
  • the chamber is constructed of two separable pieces 32, 33.
  • the piece 32 is of cap shape having an outer wall portion 34 of a hard insulating type of material and an internal metal and con ducting liner 35 of a copper or conducting material.
  • the piece 33 is of a ceramic material suitably cemented to the upper surface of the glass wall 16.
  • the liner 35 necksdown and projects upwardly through the ceramic cap 34 and has an outer threaded wall 36 that may be received in an incandescent lighting fixture.
  • the wall 36 has an internal ceramic core 37 with a central electrical conductor 38 having an external contact plate 39 and an internal plate conductor 40 that holds a spring-type contact 41.
  • the wall 36 and contact plate 39 are of conventional type, the wall 36 being a conductor-of the negative electric pole and the plate 39 being the conductor for the positive pole.
  • the lower part 33 has an integral upwardly projecting embossment that is hollow and upwardly opening to receive the lower end of the ballast 31.
  • the embossment is provided with an externally threaded metal ring 41 that threadedly receives the lower end of the cover 32 to thereby hold the cover on and to form therewith the ballast chamber.
  • An electrical contact 42 or conductor passes through the wall 45 internally of the wall 45.
  • the ballast-31 is of a conventional type with the exception of its contact points.
  • the ballast 31 has an upper U-shaped contact that is positioned to contact the conductor plate 40 and an annular conductor ring or collar 51 that is adapted to engage the contact 42.
  • the lower horizontal wall of the ballast 32 includes a downwardly facing surface conductor ring 53 and a central inner contact plate 54.
  • the ballast 32 has input contacts 50, 51 and output contacts 53, 54.
  • the upper pane 16 also has on its base portion 45 an upwardly facing surface with a central electrical contact point 56 embedded in the glass and outer spring contacts 57 spaced from and adapted to contact the, ring 53.
  • the central point 56 is adapted to engage the contact plate 54.
  • a wire connection 58 extends from the contact point 56 to the lower filament 23, the wire being embedded in the glass core 15 and the lower wall 17.
  • a wire connection 59 extends from the contacts 57 to the upper filament 22, such wire being embedded in the upper wall 16.
  • a self-hardening plug 60 that is capable of maintaining the globe sealed is provided in the upper pane 16 and it is through the opening which the plug 60 fills that a mercury vapor gas of a type usedin fluorescent lighting is introduced into the lower chamber 19.
  • the ring 53 and contact 54 of the ballast engage the contacts 56, 57 of the base portion 45.
  • the electricity transmitted through a conventional-type incandescent fixture is transmitted first through the ballast 32 and from thence to the filaments 22, 23.
  • One filament becomes the anode and the other the cathode for the fluorescent circuit.
  • a starter switch if desired, may be inserted in the present circuit although one is not designed into the circuit.
  • the ballast 32 is not of the type requiring a separate starter switch.
  • the internal surfaces of the panes 16, 17 and 18 are internally serrated as at 61.
  • a fluorescent lighting fixture comprising a lower sealed compartment having upper and lower walls, and an outer wall joining the upper and lower walls, said sealed compartment being filled with a chargeable vapor gas for effecting fluorescence and coated internally with a phosphor coating, and an upper compartment composed of upper and lower separable parts, the lower part being rigid with the lower compartment and the upper part having an upwardly projecting connection for an incandescent fixture; divider walls fixed internally of the lower compartment for dividing the lower compartment into adjoining sections in communication with one another.
  • a drum-shaped ballast within the upper compartment having positive contact points at its upper and lower ends, a negative contact ring around its girth, and a negative discharge ring at its lower end; spaced positive and negative .filaments within the lower compartment for charging the gases; electrical conductor means extending from the connection to the upper compartment and including a central conductor extending between the upwardly projecting connection and upper positive contact point and a negative conductor extending from the negative contact of said incandescent connection and the ring around the girth; and electrical conductor means extending between the upper compartment and lower compartment in contact with and carrying current through the ballast to the respective filaments including contact points between the positive point and negative ring at the lower end of the ballast.

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  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

A fluorescent lighting fixture composed of a drum-shaped globe with an internal phosphor coating and composed of upper and lower walls, interjoined by a central glass core and an outer annular wall to provide a hermetically sealed chamber. A ballastcontaining chamber is provided above and integral with the globe and has provision thereon for connection to a conventional incandescent light socket. Provided in the globe are cathode and anode filaments and a mercury gas. The cathode and anode filaments are connected to the ballast.

Description

United States Patent [72] Inventor William J. McNeil 719 Kahl Bldg., Davenport, Iowa 52800 [21] Appl. No. 834,048 [22] Filed June 17, 1969 [45] Patented Oct. 5, 1971 [54] FLUORESCENT LIGHT FIXTURE 2 Claims, 6 Drawing Figs.
[52] US. Cl 315/57, 313/109, 313/204, 313/220, 313/318, 315/62, 315/DIG. 5 [51] lnt.Cl I-I0lj 7/44 [50] Field of Search. ..315/57,10O U, DIG. 5, 62; 313/109, 204, 220, 318
[ 56] References Cited UNITED STATES PATENTS 3,551,736 12/1970 Doehner 315/100 2,279,635 4/1942 Morley 315/57 X Re. 22,896 7/1947 Polevitzky 2,987,640 6/1961 Paolino 313/220 X 2,985,787 5/1961 Scott 313/220 X 3,024,383 3/1962 Doering 313/109 X Primary ExaminerRoy Lake Assistant ExaminerDarwin R. Hostetter Attorney-William A. Murray ABSTRACT: A fluorescent lighting fixture composed of a mercury gas. The cathode and anode filaments are connected to the ballast.
FLUORESCENT ucrrr FIXTURE BACKGROUND OF INVENTION This invention relates to a fluorescent light fixture that may be used in a conventional screw-type incandescent light fixture. It is composed of upper and lowergas chambers with the lower chamber having upper and lower parallel glass panes joined at their outer edges by an annular pane and at their centers by a glass core. The lower chamber has the elements and ingredients for providing fluorescent .lighting. The upper chamber a separable into parts and supportsa ballast therein. The upper of the two parts has a screw-type connection for an incandescent light fixture.
It is the object of the invention to provide a fluorescent globe adapted for connection to a screw-type incandescent light fixture.
Specifically it is the object of the invention to provide a globe structure composed of a lower chamber having a pair of glass panes spaced apart and sealed at their edges to form a sealed chamber. The glass panes have a phosphor coating on their inner surfaces and the chamber is filled with a mercury gas. Suitable electrical filaments for exciting the gas are provided adjacent the panes andserve to illuminate the surfaces. The globe structure also includes an upper ballast-containing chamber with a screw-type connection to an incandescent light fixture. The upper chamber has therein electrical connections extending from the screw-type connection to the ballast, and from the ballast to the electrical filaments.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of the light fixture.
FIG. 2 is an enlarged side view of the fixture mostly in section.
FIG. 3 is a bottom view of the fixture with part thereof being in section to show internal structure.
FIG. 4 is a top and side perspective view of the ballast.
FIG. 5 is a bottom and side perspective view of the ballast.
FIG. 6 is an enlarged vertical sectional view of a juncture in the upper ballast chamber.
The fixture I0 is composed of a lower chamber portion 11 having a pair of upper and lower horizontal glass panes 16, 17 spaced vertically apart. The panes 16, 17 are provided with and are integrally interconnected by a central vertical glass core and an outer annular glass wall or pane 18 so as to create or define a hermetically sealed lower chamber or compartment 19. The inner surfaces of panes 15-18 are provided, at least in part with a lining or coating 20 of a phosphor material. Retained in the chamber 19 adjacent the upper. and lower panels adjacent the core 15 and outer wall 18 respectively are a pair of filament panels 22, 23. The upper panel 16 has a downwardly projecting wall 24 outward of the upper inner filament 22 and the lower wall 17 has an upwardly projecting round wall 25 inward of the outer filament 23.
The fixture 10 also includes an upper chamber portion '30 that has a ballast control member 31 contained therein. The chamber is constructed of two separable pieces 32, 33. The piece 32 is of cap shape having an outer wall portion 34 of a hard insulating type of material and an internal metal and con ducting liner 35 of a copper or conducting material. The piece 33 is of a ceramic material suitably cemented to the upper surface of the glass wall 16. The liner 35 necksdown and projects upwardly through the ceramic cap 34 and has an outer threaded wall 36 that may be received in an incandescent lighting fixture. The wall 36 has an internal ceramic core 37 with a central electrical conductor 38 having an external contact plate 39 and an internal plate conductor 40 that holds a spring-type contact 41. The wall 36 and contact plate 39 are of conventional type, the wall 36 being a conductor-of the negative electric pole and the plate 39 being the conductor for the positive pole. The lower part 33 has an integral upwardly projecting embossment that is hollow and upwardly opening to receive the lower end of the ballast 31. The embossment is provided with an externally threaded metal ring 41 that threadedly receives the lower end of the cover 32 to thereby hold the cover on and to form therewith the ballast chamber. An electrical contact 42 or conductor passes through the wall 45 internally of the wall 45. g
' The ballast-31 is of a conventional type with the exception of its contact points. The ballast 31 has an upper U-shaped contact that is positioned to contact the conductor plate 40 and an annular conductor ring or collar 51 that is adapted to engage the contact 42. The lower horizontal wall of the ballast 32 includes a downwardly facing surface conductor ring 53 and a central inner contact plate 54. Thus, the ballast 32 has input contacts 50, 51 and output contacts 53, 54. The upper pane 16 also has on its base portion 45 an upwardly facing surface with a central electrical contact point 56 embedded in the glass and outer spring contacts 57 spaced from and adapted to contact the, ring 53. The central point 56 is adapted to engage the contact plate 54. A wire connection 58 extends from the contact point 56 to the lower filament 23, the wire being embedded in the glass core 15 and the lower wall 17. A wire connection 59 extends from the contacts 57 to the upper filament 22, such wire being embedded in the upper wall 16.
A self-hardening plug 60 that is capable of maintaining the globe sealed is provided in the upper pane 16 and it is through the opening which the plug 60 fills that a mercury vapor gas of a type usedin fluorescent lighting is introduced into the lower chamber 19.
y In operation electricity introduced into' the ballast 32 through the metal liner 35, 36 and the conductor 38. When the cap 32 is fully screwed down on the embossed portion 45 and its threaded metal wall 36, the ring 51 and contact 50 are positioned to engage the contact 46 and plate 40 respectively.
.Also, the ring 53 and contact 54 of the ballast engage the contacts 56, 57 of the base portion 45. Thus, the electricity transmitted through a conventional-type incandescent fixture is transmitted first through the ballast 32 and from thence to the filaments 22, 23. One filament becomes the anode and the other the cathode for the fluorescent circuit. A starter switch, if desired, may be inserted in the present circuit although one is not designed into the circuit. The ballast 32 is not of the type requiring a separate starter switch.
In order to give a brighter light in the room, the internal surfaces of the panes 16, 17 and 18 are internally serrated as at 61.
1 claim:
1. A fluorescent lighting fixture comprising a lower sealed compartment having upper and lower walls, and an outer wall joining the upper and lower walls, said sealed compartment being filled with a chargeable vapor gas for effecting fluorescence and coated internally with a phosphor coating, and an upper compartment composed of upper and lower separable parts, the lower part being rigid with the lower compartment and the upper part having an upwardly projecting connection for an incandescent fixture; divider walls fixed internally of the lower compartment for dividing the lower compartment into adjoining sections in communication with one another. and for providing a tortuous path for electrons to flow; a drum-shaped ballast within the upper compartment having positive contact points at its upper and lower ends, a negative contact ring around its girth, and a negative discharge ring at its lower end; spaced positive and negative .filaments within the lower compartment for charging the gases; electrical conductor means extending from the connection to the upper compartment and including a central conductor extending between the upwardly projecting connection and upper positive contact point and a negative conductor extending from the negative contact of said incandescent connection and the ring around the girth; and electrical conductor means extending between the upper compartment and lower compartment in contact with and carrying current through the ballast to the respective filaments including contact points between the positive point and negative ring at the lower end of the ballast.
to receive and transmit current from the incandescent connection to the filaments.

Claims (1)

  1. 2. The invention as defined in claim 1 in which said separable parts are threadedly joined and when threadedly joined a predetermined amount will place the ballast in proper position to receive and transmit current from the incandescent connection to the filaments.
US834048A 1969-06-17 1969-06-17 Fluorescent light fixture Expired - Lifetime US3611009A (en)

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899712A (en) * 1974-05-01 1975-08-12 Gen Electric Tapered helical compact fluorescent lamp
US3987335A (en) * 1975-01-20 1976-10-19 General Electric Company Electrodeless fluorescent lamp bulb RF power energized through magnetic core located partially within gas discharge space
US3987334A (en) * 1975-01-20 1976-10-19 General Electric Company Integrally ballasted electrodeless fluorescent lamp
US4005330A (en) * 1975-01-20 1977-01-25 General Electric Company Electrodeless fluorescent lamp
US4017764A (en) * 1975-01-20 1977-04-12 General Electric Company Electrodeless fluorescent lamp having a radio frequency gas discharge excited by a closed loop magnetic core
US4187446A (en) * 1977-09-21 1980-02-05 Leo Gross Screw-in fluorescent lamp with magnetic arc spreading
US4225905A (en) * 1977-05-09 1980-09-30 Moriyama Sangyo Kabushiki Kaisha Fluorescent light fixture
US4311942A (en) * 1977-09-21 1982-01-19 Spellman High Voltage Electronics Corp. Compact fluorescent lamp and method and means for magnetic arc spreading
US4316120A (en) * 1979-06-13 1982-02-16 General Electric Company Circular fluorescent lamp unit
US4353007A (en) * 1977-08-23 1982-10-05 U.S. Philips Corporation Discharge lamp unit including integral ballast
EP0077077A3 (en) * 1981-10-14 1983-11-16 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Panel-shaped low-pressure mercury vapour discharge lamp
US4503358A (en) * 1981-06-05 1985-03-05 Tokyo Shibaura Denki Kabushiki Kaisha Fluorescent lamp having separate cooling means for ballast and fluorescent tube
US4570105A (en) * 1983-09-20 1986-02-11 Engel Herman J Electrical adapter for use in connection with fluorescent lamps
USD284652S (en) 1983-07-07 1986-07-15 Engel Herman J Adapter base for electric lamp
USD284757S (en) 1983-07-07 1986-07-22 Engel Herman J Adapter base for electric lamp
USD284793S (en) 1983-07-07 1986-07-22 Engel Herman J Combined fluorescent lamp and electrical adapter therefor
USD285007S (en) 1983-07-07 1986-08-05 Engel Herman J Combined fluorescent lamp and electrical adapter therefor
USD291556S (en) 1984-09-26 1987-08-25 Engel Herman J Adapter base for fluorescent lamp
USD291557S (en) 1984-09-26 1987-08-25 Engel Herman J Adapter base for fluorescent lamp
USD295083S (en) 1985-08-12 1988-04-05 Matsushita Electric Industrial Co., Ltd. Fluorescent lamp
USD295082S (en) 1985-08-01 1988-04-05 Matsushita Electrical Industrial Co., Ltd. Fluorescent lamp
USD302860S (en) 1985-07-08 1989-08-15 U.S. Philips Corporation Lamp base
US5390096A (en) * 1992-10-22 1995-02-14 Progressive Technology In Lighting, Inc. Replacement compact fluorescent lamp assembly
US5720548A (en) * 1995-11-14 1998-02-24 Progressive Technology In Lighting, Inc. High luminance fluorescent lamp assembly
US7234973B1 (en) 2006-03-23 2007-06-26 Shelly Mark E Lighting system having modified light bulb base and luminare socket for preventing the selection of an over wattage light bulb and method of forming same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2279635A (en) * 1941-01-07 1942-04-14 Fred J Mckane Luminous vapor lamp
USRE22896E (en) * 1947-07-08 Illuminating device
US2985787A (en) * 1958-11-19 1961-05-23 British Thomson Houston Co Ltd Electric discharge lamps
US2987640A (en) * 1959-11-24 1961-06-06 Gen Electric Electric lamp envelope
US3024383A (en) * 1948-10-01 1962-03-06 Ulrich W Doering Fluorescent lamp
US3551736A (en) * 1968-04-02 1970-12-29 Gunther Anthony Doehner Fluorescent lamps constructed for use in conventional light fixtures

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE22896E (en) * 1947-07-08 Illuminating device
US2279635A (en) * 1941-01-07 1942-04-14 Fred J Mckane Luminous vapor lamp
US3024383A (en) * 1948-10-01 1962-03-06 Ulrich W Doering Fluorescent lamp
US2985787A (en) * 1958-11-19 1961-05-23 British Thomson Houston Co Ltd Electric discharge lamps
US2987640A (en) * 1959-11-24 1961-06-06 Gen Electric Electric lamp envelope
US3551736A (en) * 1968-04-02 1970-12-29 Gunther Anthony Doehner Fluorescent lamps constructed for use in conventional light fixtures

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899712A (en) * 1974-05-01 1975-08-12 Gen Electric Tapered helical compact fluorescent lamp
US4017764A (en) * 1975-01-20 1977-04-12 General Electric Company Electrodeless fluorescent lamp having a radio frequency gas discharge excited by a closed loop magnetic core
US4005330A (en) * 1975-01-20 1977-01-25 General Electric Company Electrodeless fluorescent lamp
US3987335A (en) * 1975-01-20 1976-10-19 General Electric Company Electrodeless fluorescent lamp bulb RF power energized through magnetic core located partially within gas discharge space
US3987334A (en) * 1975-01-20 1976-10-19 General Electric Company Integrally ballasted electrodeless fluorescent lamp
US4225905A (en) * 1977-05-09 1980-09-30 Moriyama Sangyo Kabushiki Kaisha Fluorescent light fixture
US4353007A (en) * 1977-08-23 1982-10-05 U.S. Philips Corporation Discharge lamp unit including integral ballast
US4311942A (en) * 1977-09-21 1982-01-19 Spellman High Voltage Electronics Corp. Compact fluorescent lamp and method and means for magnetic arc spreading
US4187446A (en) * 1977-09-21 1980-02-05 Leo Gross Screw-in fluorescent lamp with magnetic arc spreading
US4316120A (en) * 1979-06-13 1982-02-16 General Electric Company Circular fluorescent lamp unit
US4503358A (en) * 1981-06-05 1985-03-05 Tokyo Shibaura Denki Kabushiki Kaisha Fluorescent lamp having separate cooling means for ballast and fluorescent tube
EP0077077A3 (en) * 1981-10-14 1983-11-16 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Panel-shaped low-pressure mercury vapour discharge lamp
USD285007S (en) 1983-07-07 1986-08-05 Engel Herman J Combined fluorescent lamp and electrical adapter therefor
USD284652S (en) 1983-07-07 1986-07-15 Engel Herman J Adapter base for electric lamp
USD284757S (en) 1983-07-07 1986-07-22 Engel Herman J Adapter base for electric lamp
USD284793S (en) 1983-07-07 1986-07-22 Engel Herman J Combined fluorescent lamp and electrical adapter therefor
US4570105A (en) * 1983-09-20 1986-02-11 Engel Herman J Electrical adapter for use in connection with fluorescent lamps
US4623823A (en) 1983-09-20 1986-11-18 Engel Herman J Electrical adapter for use in connection with fluorescent lamps
USD291556S (en) 1984-09-26 1987-08-25 Engel Herman J Adapter base for fluorescent lamp
USD291557S (en) 1984-09-26 1987-08-25 Engel Herman J Adapter base for fluorescent lamp
USD302860S (en) 1985-07-08 1989-08-15 U.S. Philips Corporation Lamp base
USD295082S (en) 1985-08-01 1988-04-05 Matsushita Electrical Industrial Co., Ltd. Fluorescent lamp
USD295083S (en) 1985-08-12 1988-04-05 Matsushita Electric Industrial Co., Ltd. Fluorescent lamp
US5390096A (en) * 1992-10-22 1995-02-14 Progressive Technology In Lighting, Inc. Replacement compact fluorescent lamp assembly
US5720548A (en) * 1995-11-14 1998-02-24 Progressive Technology In Lighting, Inc. High luminance fluorescent lamp assembly
US7234973B1 (en) 2006-03-23 2007-06-26 Shelly Mark E Lighting system having modified light bulb base and luminare socket for preventing the selection of an over wattage light bulb and method of forming same

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