US3815080A - Fluorescent lamp adapter assembly - Google Patents

Fluorescent lamp adapter assembly Download PDF

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Publication number
US3815080A
US3815080A US00350422A US35042273A US3815080A US 3815080 A US3815080 A US 3815080A US 00350422 A US00350422 A US 00350422A US 35042273 A US35042273 A US 35042273A US 3815080 A US3815080 A US 3815080A
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fluorescent lamp
disposed
base member
lamp
contacts
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US00350422A
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F Summa
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/94—Holders formed as intermediate parts for linking a counter-part to a coupling part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/0075—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources
    • F21V19/008—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps
    • F21V19/0085—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps at least one conductive element acting as a support means, e.g. resilient contact blades, piston-like contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
    • H01R33/08—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp
    • H01R33/0809—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp having contacts on one side only

Definitions

  • An adapter assembly for coupling a standard fluorescent lamp to an incandescent lamp fixture socket, comprising a base member having a lower threaded portion for disposal in the fixture socket, a ballast transformer electrically coupled to the threaded base, and a plurality of electrical contacts disposed in the base member and electrically coupled to the transformer for electrically coupling the electrodes of the fluorescent lamp to the ballast transformer.
  • One end of the fluorescent lamp is disposed in a pair of the electrical contacts in the base member, while the other end of the tube is electrically coupled to the ballast transformer by a cap slidably disposed over the end of the lamp which includes electrical contacts coupled by elongated wires in an elongated tube disposed adjacent the lamp to another pair of contacts in the base member.
  • the adapter assembly permits the insertion of a standard fluorescent lamp in an incandescent lamp socket fixture without modification.
  • the present invention relates generally to electrical lamps, and in particular, to a fluorescent lamp adapter assembly for electrically coupling a fluorescent lamp to an incandescent lamp socket.
  • Fluorescent lamps which are. constructed foi use in conventional incandescent light fixtures are known. However, these lamps are not similar to conventional lamps and are specifically constructed for such use, and the adapter assembly and the lamp must be purchased in combination and can function only as a unit.
  • the present invention provides a novel adapter assembly for permitting the insertion of a standard fluorescent lamp into an incandescent lamp fixture socket.
  • the assembly includes a threaded base member, for insertion in an incandescent lamp fixture socket, having a ballast transformer disposed therein coupled to a plurality of electrical'contacts disposed in recesses provided-inthe base member.
  • An elongated tube, generally 'L-shaped has a pair of outwardly extending contact pins at one end thereof which are received in a pair of the electrical contacts in' the base member, and a cap including a pair of electrical contacts at the other end thereof coupled to the contact pins for disposal over one end of a fluorescent lamp and for receiving the contact pins of the lamp.
  • the elongatedtube isdisposed adjacent the fluorescent lamp when it and the lamp are disposed in the electrical contacts provided in the base member, and electrically couples one end of the lamp to the ballast transformer.
  • the contact pins on the other end of the lamp are disposed in the contacts in the base member which also couple the lamp to the ballast transformer.
  • the elongated tube also aids in the support of the lamp on the base member in a vertical position.
  • lt is, therefore, an object of the present invention to provide a fluorescent lamp adapter assembly for mounting a conventional fluorescent lamp in an incandescent lamp fixture socket.
  • lt is also an object of the present invention to provide a fluorescent lamp adapter assembly which is simple in design, easy to manufacture, and efficient and reliable in operation.
  • FIG. 1 is an exploded perspective view of a fluorescent lamp adapter assembly constructed in accordance with the present invention, shown with a fluorescent lamp connected thereto;
  • the adapter assembly comprises a base member 10, constructed of electrical insulation material 11, in which a ballast transformer 12 is disposed.
  • the base member includes an electrically conductive, threaded shell 13 disposed on the lower portion thereof for threadable engagement with a conventional incandescent lamp fixture socket.
  • Ballast transformer 12 is electrically coupled at one end to shell 13, and at the other end to an external, electrically-conductive contact member 14 disposed on the bottom surface of the base member.
  • Electrical contacts 15 and 16 are disposed in recesses in base member 10 for electrically connecting fluorescent lamp 17 to the power supply at the fixture socket. External contact pins 18 of the fluorescent lamp are received in contacts 16 in base member 10.
  • the contact pins at the other end of lamp 17 are electrically coupled by contacts 19 disposed in removable, electrically nonconductive cap 20 disposed over the end of lamp l7, and coupled to transformer 12 by a pair of electrically conductive wires 21 disposed within an elongated electrically nonconductive tube 22 disposed adjacent the entire length of lamp 17.
  • the ends of wires 21 form outwardly extending contact pins 23 which extend from one end of tube 22 and are disposed in contacts 15 for completing the electrical circuit between the transformer and the fluorescent lamp.
  • FIG. 3 illustrates schematically the electrical connections between the 110 volt AC power source at the fixture socket and fluorescent lamp 17.
  • FIG. 2 is a cross-sectional top view of the lamp and changes and modifications may be made thereunto without departing from the spirit and scope of the invention.
  • a fluorescent lamp adapter assembly for coupling a fluorescent lamp to an incandescent lamp fixture socket, comprising:
  • a base member having a threaded lower portion for disposal in the fixture socket, and having a plurality of external electrical contact members disposed thereon electrically insulated from each other;
  • ballast transformer disposed in said base member, and electrically coupled to said contact members
  • a cap slidably disposed over one end of the fluorescent lamp, and including electrical contacts disposed therein coupled to said contacts in said base member, for receiving the contact pins of the fluorescent lamp, and thereby coupling one end of said lamp to said ballast transformer;
  • an elongated electrically nonconductive, generally L-shaped tube coupled to said cap, and a plurality of electrical wires, disposed within said tube and coupled to said contacts in said cap, said wires extending from one end of said tube so as to form electrical contact pins receivable in said electrical contacts in said base member.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

An adapter assembly for coupling a standard fluorescent lamp to an incandescent lamp fixture socket, comprising a base member having a lower threaded portion for disposal in the fixture socket, a ballast transformer electrically coupled to the threaded base, and a plurality of electrical contacts disposed in the base member and electrically coupled to the transformer for electrically coupling the electrodes of the fluorescent lamp to the ballast transformer. One end of the fluorescent lamp is disposed in a pair of the electrical contacts in the base member, while the other end of the tube is electrically coupled to the ballast transformer by a cap slidably disposed over the end of the lamp which includes electrical contacts coupled by elongated wires in an elongated tube disposed adjacent the lamp to another pair of contacts in the base member. The adapter assembly permits the insertion of a standard fluorescent lamp in an incandescent lamp socket fixture without modification.

Description

ited States Patent [191 Summa 1 1 June 4, 1974 FLUORESCENT LAMP ADAPTER ASSEMBLY 57 ABSTRACT [76] Inventor: Frank Summa, 22 Starbuck St.,
Staten lsland, NY. 10304 [22] Filed: Apr. 12, 1973 [21] Appl. No.: 350,422
[52] US. Cl. 339/52 R, 339/147 R, 339/168, 339/170, 240/5l.ll R
[51] Int. Cl H0lr 13/66 [58] Field of Search 339/50-57,
339/l47,l68, 170, 258 TC; 240/5l.l l, 51.12
[56] References Cited UNITED STATES PATENTS 2,507,898 5/1950 Gaynor et al. 339/52 RX 2,534,361 12/1950 Ludwig 339/53 X 3,120,419 2/l964 Dwarkin 339/168 3,168,987 2/1965 Heisler 24()/5l.ll R
Primary Examiner-Richard E. Moore Attorney, Agent, or Firm-Allison C. Collard An adapter assembly for coupling a standard fluorescent lamp to an incandescent lamp fixture socket, comprising a base member having a lower threaded portion for disposal in the fixture socket, a ballast transformer electrically coupled to the threaded base, and a plurality of electrical contacts disposed in the base member and electrically coupled to the transformer for electrically coupling the electrodes of the fluorescent lamp to the ballast transformer. One end of the fluorescent lamp is disposed in a pair of the electrical contacts in the base member, while the other end of the tube is electrically coupled to the ballast transformer by a cap slidably disposed over the end of the lamp which includes electrical contacts coupled by elongated wires in an elongated tube disposed adjacent the lamp to another pair of contacts in the base member. The adapter assembly permits the insertion of a standard fluorescent lamp in an incandescent lamp socket fixture without modification.
1 Claim, 3 Drawing Figures PATENTEDJUN 4 I974 BALLAST TRANSFORMER LAMP l FLUORESCENT LAMP ADAPTER ASSEMBLY The present invention relates generally to electrical lamps, and in particular, to a fluorescent lamp adapter assembly for electrically coupling a fluorescent lamp to an incandescent lamp socket.
Fluorescent lamps which are. constructed foi use in conventional incandescent light fixtures are known. However, these lamps are not similar to conventional lamps and are specifically constructed for such use, and the adapter assembly and the lamp must be purchased in combination and can function only as a unit. The adapter assemblies now offered, thus, do not permit the use of a conventional standard fluorescent lamp therewith so as to enable the lamp to be inserted into an incandescent lamp fixture.
Accordingly, the present invention provides a novel adapter assembly for permitting the insertion of a standard fluorescent lamp into an incandescent lamp fixture socket. The assembly includes a threaded base member, for insertion in an incandescent lamp fixture socket, having a ballast transformer disposed therein coupled to a plurality of electrical'contacts disposed in recesses provided-inthe base member. An elongated tube, generally 'L-shaped has a pair of outwardly extending contact pins at one end thereof which are received in a pair of the electrical contacts in' the base member, and a cap including a pair of electrical contacts at the other end thereof coupled to the contact pins for disposal over one end of a fluorescent lamp and for receiving the contact pins of the lamp. The elongatedtube isdisposed adjacent the fluorescent lamp when it and the lamp are disposed in the electrical contacts provided in the base member, and electrically couples one end of the lamp to the ballast transformer. The contact pins on the other end of the lamp are disposed in the contacts in the base member which also couple the lamp to the ballast transformer. The elongated tube also aids in the support of the lamp on the base member in a vertical position. I
lt is, therefore, an object of the present invention to provide a fluorescent lamp adapter assembly for mounting a conventional fluorescent lamp in an incandescent lamp fixture socket.
lt is also an object of the present invention to provide a fluorescent lamp adapter assembly which is simple in design, easy to manufacture, and efficient and reliable in operation.
Other objects and features of the present invention will become apparent from the following detailed description when taken in connection with the accompanying drawings which disclose one of the embodiments of the invention. It is to be understood that the drawings are designed for the purpose of illustration only, and are not intended as a definition of the limits and scope of the invention disclosed therein.
In the drawings, wherein similar reference numerals denote similar elements throughout the several views:
FIG. 1 is an exploded perspective view of a fluorescent lamp adapter assembly constructed in accordance with the present invention, shown with a fluorescent lamp connected thereto;
Referring to the drawings, specifically FIGS. 1 and 2, the adapter assembly comprises a base member 10, constructed of electrical insulation material 11, in which a ballast transformer 12 is disposed. The base member includes an electrically conductive, threaded shell 13 disposed on the lower portion thereof for threadable engagement with a conventional incandescent lamp fixture socket. Ballast transformer 12 is electrically coupled at one end to shell 13, and at the other end to an external, electrically-conductive contact member 14 disposed on the bottom surface of the base member. Electrical contacts 15 and 16 are disposed in recesses in base member 10 for electrically connecting fluorescent lamp 17 to the power supply at the fixture socket. External contact pins 18 of the fluorescent lamp are received in contacts 16 in base member 10. The contact pins at the other end of lamp 17 are electrically coupled by contacts 19 disposed in removable, electrically nonconductive cap 20 disposed over the end of lamp l7, and coupled to transformer 12 by a pair of electrically conductive wires 21 disposed within an elongated electrically nonconductive tube 22 disposed adjacent the entire length of lamp 17. The ends of wires 21 form outwardly extending contact pins 23 which extend from one end of tube 22 and are disposed in contacts 15 for completing the electrical circuit between the transformer and the fluorescent lamp. FIG. 3 illustrates schematically the electrical connections between the 110 volt AC power source at the fixture socket and fluorescent lamp 17.
While only a single embodiment of the present invention has been shown and described, it will be obvious to those persons of ordinary skill in the art that many FIG. 2 is a cross-sectional top view of the lamp and changes and modifications may be made thereunto without departing from the spirit and scope of the invention.
What is claimed is:
l. A fluorescent lamp adapter assembly, for coupling a fluorescent lamp to an incandescent lamp fixture socket, comprising:
a base member, having a threaded lower portion for disposal in the fixture socket, and having a plurality of external electrical contact members disposed thereon electrically insulated from each other;
a ballast transformer, disposed in said base member, and electrically coupled to said contact members;
a plurality of electrical contacts, disposed in recesses in said base member for coupling the electrodes of the fluorescent lamp to said transformer, said contacts being arranged for'receiving contact pins disposed on the ends of the fluorescent lamp;
a cap, slidably disposed over one end of the fluorescent lamp, and including electrical contacts disposed therein coupled to said contacts in said base member, for receiving the contact pins of the fluorescent lamp, and thereby coupling one end of said lamp to said ballast transformer; and
an elongated electrically nonconductive, generally L-shaped tube, coupled to said cap, and a plurality of electrical wires, disposed within said tube and coupled to said contacts in said cap, said wires extending from one end of said tube so as to form electrical contact pins receivable in said electrical contacts in said base member.

Claims (1)

1. A fluorescent lamp adapter assembly, for coupling a fluorescent lamp to an incandescent lamp fixture socket, comprising: a base member, having a threaded lower portion for disposal in the fixture socket, and having a plurality of external electrical contact members disposed thereon electrically insulated from each other; a ballast transformer, disposed in said base member, and electrically coupled to said contact members; a plurality of electrical contacts, disposed in recesses in said base member for coupling the electrodes of the fluorescent lamp to said transformer, said contacts being arranged for receiving contact pins disposed on the ends of the fluorescent lamp; a cap, slidably disposed over one end of the fluorescent lamp, and including electrical contacts disposed therein coupled to said contacts in said base member, for receiving the contact pins of the fluorescent lamp, and thereby coupling one end of said lamp to said ballast transformer; and an elongated electrically nonconductive, generally L-shaped tube, coupled to said cap, and a plurality of electrical wires, disposed within said tube and coupled to said contacts in said cap, said wires extending from one end of said tube so as to form electrical contact pins receivable in said electrical contacts in said base member.
US00350422A 1973-04-12 1973-04-12 Fluorescent lamp adapter assembly Expired - Lifetime US3815080A (en)

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Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953761A (en) * 1974-04-03 1976-04-27 Thomas Lo Giudice Fluorescent light bulb for use in conventional incandescent bulb fixture
US4066888A (en) * 1975-07-14 1978-01-03 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Enclosed high-pressure electric discharge lamp structure with cable terminal
DE3005017A1 (en) * 1979-02-13 1980-08-21 Westinghouse Electric Corp ELECTRIC LAMP UNIT
US4270071A (en) * 1979-11-26 1981-05-26 Westinghouse Electric Corp. Composite base and ballast member for compact single-ended fluorescent lamp
US4287456A (en) * 1979-12-06 1981-09-01 Alert Safety Lite Products Company Portable fluorescent tube assembly having low voltage convenience outlet
US4337414A (en) * 1979-11-26 1982-06-29 Westinghouse Electric Corp. Compact fluorescent lamp having convoluted tubular envelope of tridimensional configuration, method of making such envelope, and lighting unit incorporating such lamp
US4352539A (en) * 1980-05-30 1982-10-05 Vest Gary W Fluorescent light with threaded connector
DE3210005A1 (en) * 1981-03-23 1982-10-21 Westinghouse Electric Corp., 15222 Pittsburgh, Pa. COMPACT FLUORESCENT LAMP
US4414489A (en) * 1981-11-04 1983-11-08 North American Philips Electric Corp. Compact electric discharge lamp-and-ballast unit, and plug-in ballast module therefor
US4495443A (en) * 1984-01-27 1985-01-22 Cummings John H Compact fluorescent lamp combination, and method of making it
US4570105A (en) * 1983-09-20 1986-02-11 Engel Herman J Electrical adapter for use in connection with fluorescent lamps
EP0179473A2 (en) * 1984-10-25 1986-04-30 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Adapter for a single-base low-pressure discharge lamp
US4645283A (en) * 1983-01-03 1987-02-24 North American Philips Corporation Adapter for mounting a fluorescent lamp in an incandescent lamp type socket
US4683402A (en) * 1985-04-25 1987-07-28 Truman Aubrey Adaptors for fluorescent lamps
EP0240736A1 (en) * 1986-04-03 1987-10-14 Vossloh Schwabe GmbH Ballast device or transformer, especially for discharge lamps
US4956756A (en) * 1989-02-10 1990-09-11 Hsiao Wen J Table lamp adapter system
US5073845A (en) * 1989-04-10 1991-12-17 Janice Industries, Inc. Fluorescent retrofit light fixture
US5390096A (en) * 1992-10-22 1995-02-14 Progressive Technology In Lighting, Inc. Replacement compact fluorescent lamp assembly
US5394133A (en) * 1992-06-29 1995-02-28 Harwood; Ronald P. Transformer housing system
US5428515A (en) * 1994-01-07 1995-06-27 Jung; Huang H. Electric lighting assembly
US5551895A (en) * 1995-03-27 1996-09-03 Domenick A. Calbi 3-level fluorescent light adapter
US5600208A (en) * 1994-11-10 1997-02-04 Nippondenso Co., Ltd. Discharge lamp unit having separable high-voltage transformer safeguard
US5720548A (en) * 1995-11-14 1998-02-24 Progressive Technology In Lighting, Inc. High luminance fluorescent lamp assembly
DE19900870A1 (en) * 1999-01-12 2000-08-03 Walter Holzer Straight line fluorescent lamp as compact lamp with integral ballast using electrical connection to base on one side
GB2399460A (en) * 2003-03-07 2004-09-15 Melvyn John Coles Lamp fitting including low voltage transformer
US7220024B1 (en) 2004-12-13 2007-05-22 Berends Boyd E Disposable work light
US7794282B1 (en) 2009-06-09 2010-09-14 John Edward Barger Lamp socket adapter/converter
US20100330843A1 (en) * 2009-06-25 2010-12-30 Hong Gao Lamp socket power plug adapter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507898A (en) * 1943-10-01 1950-05-16 Edwin G Gaynor Fluorescent lighting
US2534361A (en) * 1946-11-16 1950-12-19 Ludwig Louis Fixture for fluorescent lamps
US3120419A (en) * 1961-05-18 1964-02-04 Marvin Gelman Adapters for electric lamps
US3168987A (en) * 1963-01-17 1965-02-09 Raymond A Heisler Fixture for fluorescent lights and the like

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507898A (en) * 1943-10-01 1950-05-16 Edwin G Gaynor Fluorescent lighting
US2534361A (en) * 1946-11-16 1950-12-19 Ludwig Louis Fixture for fluorescent lamps
US3120419A (en) * 1961-05-18 1964-02-04 Marvin Gelman Adapters for electric lamps
US3168987A (en) * 1963-01-17 1965-02-09 Raymond A Heisler Fixture for fluorescent lights and the like

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953761A (en) * 1974-04-03 1976-04-27 Thomas Lo Giudice Fluorescent light bulb for use in conventional incandescent bulb fixture
US4066888A (en) * 1975-07-14 1978-01-03 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Enclosed high-pressure electric discharge lamp structure with cable terminal
DE3005017A1 (en) * 1979-02-13 1980-08-21 Westinghouse Electric Corp ELECTRIC LAMP UNIT
US4300073A (en) * 1979-02-13 1981-11-10 Westinghouse Electric Corp. Screw-in type lighting unit having a convoluted tridimensional fluorescent lamp
US4270071A (en) * 1979-11-26 1981-05-26 Westinghouse Electric Corp. Composite base and ballast member for compact single-ended fluorescent lamp
US4337414A (en) * 1979-11-26 1982-06-29 Westinghouse Electric Corp. Compact fluorescent lamp having convoluted tubular envelope of tridimensional configuration, method of making such envelope, and lighting unit incorporating such lamp
US4287456A (en) * 1979-12-06 1981-09-01 Alert Safety Lite Products Company Portable fluorescent tube assembly having low voltage convenience outlet
US4352539A (en) * 1980-05-30 1982-10-05 Vest Gary W Fluorescent light with threaded connector
DE3210005A1 (en) * 1981-03-23 1982-10-21 Westinghouse Electric Corp., 15222 Pittsburgh, Pa. COMPACT FLUORESCENT LAMP
US4375607A (en) * 1981-03-23 1983-03-01 Westinghouse Electric Corp. Compact lamp unit having plug-in fluorescent lamp and module components
US4414489A (en) * 1981-11-04 1983-11-08 North American Philips Electric Corp. Compact electric discharge lamp-and-ballast unit, and plug-in ballast module therefor
US4645283A (en) * 1983-01-03 1987-02-24 North American Philips Corporation Adapter for mounting a fluorescent lamp in an incandescent lamp type socket
US4570105A (en) * 1983-09-20 1986-02-11 Engel Herman J Electrical adapter for use in connection with fluorescent lamps
US4495443A (en) * 1984-01-27 1985-01-22 Cummings John H Compact fluorescent lamp combination, and method of making it
EP0179473A2 (en) * 1984-10-25 1986-04-30 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Adapter for a single-base low-pressure discharge lamp
EP0179473A3 (en) * 1984-10-25 1988-10-26 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Adapter for a single-base low-pressure discharge lamp
US4683402A (en) * 1985-04-25 1987-07-28 Truman Aubrey Adaptors for fluorescent lamps
EP0240736A1 (en) * 1986-04-03 1987-10-14 Vossloh Schwabe GmbH Ballast device or transformer, especially for discharge lamps
US4956756A (en) * 1989-02-10 1990-09-11 Hsiao Wen J Table lamp adapter system
US5073845A (en) * 1989-04-10 1991-12-17 Janice Industries, Inc. Fluorescent retrofit light fixture
US5394133A (en) * 1992-06-29 1995-02-28 Harwood; Ronald P. Transformer housing system
US5398177A (en) * 1992-06-29 1995-03-14 Harwood; Ronald P. Assembleable lighting system
US5390096A (en) * 1992-10-22 1995-02-14 Progressive Technology In Lighting, Inc. Replacement compact fluorescent lamp assembly
US5428515A (en) * 1994-01-07 1995-06-27 Jung; Huang H. Electric lighting assembly
US5600208A (en) * 1994-11-10 1997-02-04 Nippondenso Co., Ltd. Discharge lamp unit having separable high-voltage transformer safeguard
US5551895A (en) * 1995-03-27 1996-09-03 Domenick A. Calbi 3-level fluorescent light adapter
US5720548A (en) * 1995-11-14 1998-02-24 Progressive Technology In Lighting, Inc. High luminance fluorescent lamp assembly
DE19900870A1 (en) * 1999-01-12 2000-08-03 Walter Holzer Straight line fluorescent lamp as compact lamp with integral ballast using electrical connection to base on one side
GB2399460A (en) * 2003-03-07 2004-09-15 Melvyn John Coles Lamp fitting including low voltage transformer
US7220024B1 (en) 2004-12-13 2007-05-22 Berends Boyd E Disposable work light
US7794282B1 (en) 2009-06-09 2010-09-14 John Edward Barger Lamp socket adapter/converter
US20100330843A1 (en) * 2009-06-25 2010-12-30 Hong Gao Lamp socket power plug adapter

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