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Publication numberUS3815080 A
Publication typeGrant
Publication dateJun 4, 1974
Filing dateApr 12, 1973
Priority dateApr 12, 1973
Publication numberUS 3815080 A, US 3815080A, US-A-3815080, US3815080 A, US3815080A
InventorsSumma F
Original AssigneeSumma F
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Fluorescent lamp adapter assembly
US 3815080 A
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.
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Description  (OCR text may contain errors)

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.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2507898 *Oct 1, 1943May 16, 1950Andrews Harold KFluorescent lighting
US2534361 *Nov 16, 1946Dec 19, 1950Ludwig LouisFixture for fluorescent lamps
US3120419 *May 18, 1961Feb 4, 1964Marvin GelmanAdapters for electric lamps
US3168987 *Jan 17, 1963Feb 9, 1965Raymond A HeislerFixture for fluorescent lights and the like
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3953761 *Apr 3, 1974Apr 27, 1976Thomas Lo GiudiceFluorescent light bulb for use in conventional incandescent bulb fixture
US4066888 *Jul 6, 1976Jan 3, 1978Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen MbhEnclosed high-pressure electric discharge lamp structure with cable terminal
US4270071 *Nov 26, 1979May 26, 1981Westinghouse Electric Corp.Composite base and ballast member for compact single-ended fluorescent lamp
US4287456 *Dec 6, 1979Sep 1, 1981Alert Safety Lite Products CompanyPortable fluorescent tube assembly having low voltage convenience outlet
US4300073 *Feb 13, 1979Nov 10, 1981Westinghouse Electric Corp.Screw-in type lighting unit having a convoluted tridimensional fluorescent lamp
US4337414 *Nov 26, 1979Jun 29, 1982Westinghouse Electric Corp.Compact fluorescent lamp having convoluted tubular envelope of tridimensional configuration, method of making such envelope, and lighting unit incorporating such lamp
US4352539 *May 30, 1980Oct 5, 1982Vest Gary WFluorescent light with threaded connector
US4375607 *Mar 23, 1981Mar 1, 1983Westinghouse Electric Corp.Compact lamp unit having plug-in fluorescent lamp and module components
US4414489 *Nov 4, 1981Nov 8, 1983North American Philips Electric Corp.Compact electric discharge lamp-and-ballast unit, and plug-in ballast module therefor
US4495443 *Jan 27, 1984Jan 22, 1985Cummings John HCompact fluorescent lamp combination, and method of making it
US4570105 *Sep 20, 1983Feb 11, 1986Engel Herman JElectrical adapter for use in connection with fluorescent lamps
US4645283 *Apr 3, 1985Feb 24, 1987North American Philips CorporationAdapter for mounting a fluorescent lamp in an incandescent lamp type socket
US4683402 *Apr 25, 1985Jul 28, 1987Truman AubreyAdaptors for fluorescent lamps
US4956756 *Feb 10, 1989Sep 11, 1990Hsiao Wen JTable lamp adapter system
US5073845 *Apr 10, 1989Dec 17, 1991Janice Industries, Inc.Fluorescent retrofit light fixture
US5390096 *Jan 22, 1993Feb 14, 1995Progressive Technology In Lighting, Inc.Replacement compact fluorescent lamp assembly
US5394133 *Aug 12, 1993Feb 28, 1995Harwood; Ronald P.Transformer housing system
US5398177 *Jun 29, 1992Mar 14, 1995Harwood; Ronald P.Assembleable lighting system
US5428515 *Jan 7, 1994Jun 27, 1995Jung; Huang H.Electric lighting assembly
US5551895 *Mar 27, 1995Sep 3, 1996Domenick A. Calbi3-level fluorescent light adapter
US5600208 *Oct 18, 1995Feb 4, 1997Nippondenso Co., Ltd.Discharge lamp unit having separable high-voltage transformer safeguard
US5720548 *Nov 14, 1995Feb 24, 1998Progressive Technology In Lighting, Inc.High luminance fluorescent lamp assembly
US7220024Dec 13, 2004May 22, 2007Berends Boyd EDisposable work light
US7794282Jun 9, 2009Sep 14, 2010John Edward BargerLamp socket adapter/converter
DE3005017A1 *Feb 11, 1980Aug 21, 1980Westinghouse Electric CorpElektrische lampeneinheit
DE3210005A1 *Mar 19, 1982Oct 21, 1982Westinghouse Electric CorpKompakte fluoreszenzlampe
DE19900870A1 *Jan 12, 1999Aug 3, 2000Walter HolzerStraight line fluorescent lamp as compact lamp with integral ballast using electrical connection to base on one side
EP0179473A2 *Oct 24, 1985Apr 30, 1986Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbHAdapter for a single-base low-pressure discharge lamp
EP0240736A1 *Mar 6, 1987Oct 14, 1987Vossloh Schwabe GmbHBallast device or transformer, especially for discharge lamps
Classifications
U.S. Classification439/236, 362/457, 362/217.8, 362/221, 362/84, 362/95, 315/57, 439/620.2, 362/217.17, 439/646
International ClassificationH01R33/08, F21V19/00, H01R33/05, H01R33/00, H01R33/94
Cooperative ClassificationF21V19/0085, H01R33/0809, H01R33/94
European ClassificationH01R33/08B, F21V19/00F1A, H01R33/94