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Publication numberUS3038139 A
Publication typeGrant
Publication dateJun 5, 1962
Filing dateJun 13, 1958
Priority dateJun 13, 1958
Publication numberUS 3038139 A, US 3038139A, US-A-3038139, US3038139 A, US3038139A
InventorsBonanno Joseph L
Original AssigneeLionel Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Magnetic socket device
US 3038139 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

June 5, 1962 J. 1.. BONANNO 3,038,139

MAGNETIC SOCKET DEVICE Filed June 13, 1958 INVENTOR dsi x/ Z. Bwm/v/vo WW W ATTORNEYS States Filed June 13, 1953, Ser. No. 741,879 4 Claims. (Cl. 339-12) This invention relates in general to an electrical contact socket and particularly to a new and useful electrical socket for apparatus having magnetizable terminals requiring electrical actuation, in which the apparatus is held in the socket by magnetism and without any mechanical clamping means.

The present invention finds particular application in the mounting of small lamps for electrical connections in devices such as toys. In accordance with the invention, there is provided two spaced magnetized electrical contact sockets to each of which is connected a separate electrical terminal for the electrical actuation of a part including the terminals placed across such contacts.

Accordingly, it is an object of this invention to provide a magnetic-clamping electrical socket.

A further object of this invention is to provide an electrical socket which is simple in design, rugged in construction and economical to manufacture.

The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of the invention, its operating advantages and specific objects attained by its use, reference should be had to the accompanying drawings and descriptive matter in which there is illustrated and described a preferred embodiment of the invention.

In the drawings:

FIG. 1 is a transverse section of an electrical lamp socket constructed in accordance with the invention and indicating a cylindrical type lamp thereabove;

FIG. 2 is a top plan of the socket shown in FIG. 1 and with the cylindrical lamp positioned within the magnetic socket terminals; and

FIG. 3 is an end view of the lamp and socket.

Referring to the drawings in particular, the invention as embodied therein includes an insulation mounting plate upon which is secured, as with adhesive, a pair of spaced socket shells 12 and 14. The socket shells 12 and 14 are provided with semi-cylindrical recesses 16 and 18, respectively, and they form terminals in an electrical circuit connected by wires 20 and 22, respectively.

In accordance with the invention a permanent magnet 24 is secured to the insulation plate 10 in a location bringing pole pieces 26 and 28 beneath shells 12 and 14, respectively. The pole pieces are held to the insulation plate as by rivets 31 and 32.

A device which is to be actuated electrically is then connected into the electrical circuit by placing one termi- 11211 in the shell 12 and the other terminal in the shell 14. In the present instance, the: cylindrical lamp 34, having end terminals 36 and 38 made of a magnetizable material, is connected in the electrical circuit by placing the terminals 36 and 38 in the recesses 16 and 18, respectively. When the lamp 34 is thus positioned, no other clamping means is required to retain the lamp in the socket recesses since the attractive force of the magnetic pole pieces 26 and 28 maintain the lamp thus positioned. In this respect, it will be noted that the recesses 16, 18 form surfaces for freely receiving the lamp terminals 36, 38, and upon which the lamp terminals 36, 38 are magnetically retained as opposed to the usual clamping retet:

tention of electric element terminals. The upwardly extending legs of the semi-cylindrical recesses 16, 18 are utilized to restrain lateral displacement of the lamp 34.

The present invention has particular application for small devices where the assembly of the parts of a lamp or other electrical apparatus must be made as rapidly as possible in order to minimize the cost. By eliminating clamping members and securing bolts and screws and substituting a permanent magnet it is possible to make a much less expensive electrical socket.

While a specific embodiment of the invention has been shown and described in detail to illustrate the application of the invention principles, it will be understood that the invention may be embodied otherwise without departing from. such principles.

What is claimed is:

1. An electrical socket for an electrical element having spaced electrically conductive and magnetizable terminals, said socket comprising an insulated mounting plate, two spaced-apart and electrically conductive socket shells mounted on one side of said plate, said socket shells being formed for freely receiving the terminals of the electrical element and including portions for extending adjacent either side of the terminals for preventing lateral displacement thereof, each of said shells being electrically connected in a circuit, and a permanent magnet secured to said plate on the other side thereof and underlying said socket shells whereby to attract the terminals of the electrical element for retention on said shells for closing the circuit.

2. A socket according to claim 1, wherein said shells comprise semi-cylindrical recesses.

3. The combination of an electric lamp and socket therefor and comprising a substantially cylindrical lamp having substantially cylindrical magnetizable terminals at each end, an insulated mounting plate, a set of electrically conductive socket shells mounted on one side of said plate and spaced sufiiciently apart to receive said lamp terminals thereon, said socket shells being formed for freely receiving the terminals of the electrical element and including portions for extending adjacent either side of the terminals for preventing lateral displacement thereof, each of said socket shells being electrically connected in a circuit, and a permanent magnet mounted on said plate on the other side thereof and underlying said socket shells to attract the terminals of said lamp and maintain said lamp in said socket shells.

4. An electrical socket for an electrical element having spaced electrically conductive and magnetizable terminals, said socket comprising two spaced open top socket members spaced and formed for freely receiving the terminals of the electrical element means for electrically energizing said socket members, and magnetic means on the opposite side of said socket members from the open top portion arranged to attract the terminals of the electrical element and maintain it in position thereon for electrical connection.

References Cited in the file of this patent UNITED STATES PATENTS 1,293,594 Willey Feb. 4, 1919 2,170,287 Kinnebrew Aug. 22, 1939 2,414,653 Loockholder Jan. 21, 1947 2,709,245 Schneider May 24, 1955 2,742,619 Buquor Apr. 17, 1956 2,764,747 Modrey Sept. 25, 1956 2,788,501 Buquor et a1 Apr. 9, "1957 FOREIGN PATENTS 149,822 Great Britain Aug. 26, 1920

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1293594 *May 24, 1917Feb 4, 1919George O WilleyIncandescent electric lamp.
US2170287 *Jun 14, 1937Aug 22, 1939Kinnebrew Walter LDetachable electrical connector
US2414653 *Jan 10, 1944Jan 21, 1947Alex E LookholderMagnetic holder for brushes and other articles
US2709245 *Dec 11, 1950May 24, 1955Schneider Warren JElectrical connections for electric appliances
US2742619 *Sep 17, 1953Apr 17, 1956Buquor Adolph PLighting fixture and tube
US2764747 *Apr 3, 1953Sep 25, 1956Modrey Henry JElectrical connecting means and contact elements of such means
US2788501 *Dec 16, 1948Apr 9, 1957Buquor Adolph PElectrical connector having a magnetic contact
GB149822A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3162754 *Aug 10, 1962Dec 22, 1964Ferro CorpPlug-in oven units
US3169184 *Nov 29, 1962Feb 9, 1965Vye Earl FHeating and clamping apparatus
US3200320 *Nov 13, 1962Aug 10, 1965Mallory & Co Inc P RCharging means with magnetic contacts for battery operated appliances
US3234496 *Apr 1, 1963Feb 8, 1966Cedrone Nicholas JElectronic component testing device
US3439416 *Feb 3, 1966Apr 22, 1969Gen Telephone & ElectMethod and apparatus for fabricating an array of discrete elements
US3510963 *Aug 28, 1968May 12, 1970Hickok Teaching Systems IncTeaching system
US3521203 *Nov 14, 1967Jul 21, 1970Bell Telephone Labor IncMagnetic mounting for pill-type diodes
US3706882 *Feb 23, 1971Dec 19, 1972Eby George WEmergency signal light with magnetic contacts
US5154509 *Jan 15, 1992Oct 13, 1992291, Inc.Low voltage magnetic track light system
US7549779 *Feb 16, 2007Jun 23, 2009Shawn Michael GenenbacherMagnetic light fixture
US7758349 *Nov 2, 2009Jul 20, 2010Mr Board, Inc.Magnetic component connector, circuit boards for use therewith, and kits for building and designing circuits
US7824072 *Jan 9, 2008Nov 2, 2010Au Optronics Corp.Backlight structure including clipping connectors
US8070313Sep 29, 2010Dec 6, 2011Au Optronics Corp.Backlight structure including clipping connectors
US8128264May 8, 2009Mar 6, 2012Shawn Michael GenenbacherMagnetic light fixture
US8308320Nov 13, 2012Cooper Technologies CompanyLight emitting diode modules with male/female features for end-to-end coupling
US8616720Apr 27, 2011Dec 31, 2013Cooper Technologies CompanyLinkable linear light emitting diode system
US8632214Nov 7, 2012Jan 21, 2014Cooper Technologies CompanyLight modules with uninterrupted arrays of LEDs
US8764220Apr 27, 2011Jul 1, 2014Cooper Technologies CompanyLinear LED light module
US9285085Dec 19, 2013Mar 15, 2016Cooper Technologies CompanyLED lighting system with distributive powering scheme
US20080198610 *Feb 16, 2007Aug 21, 2008Shawn Michael GenenbacherMagnetic Light Fixture
US20090067167 *Jan 9, 2008Mar 12, 2009Au Optronics Corp.Backlight structure
US20100048038 *Nov 2, 2009Feb 25, 2010In Suk HanMagnetic component connector, circuit boards for use therewith, and kits for building and designing circuits
US20100290240 *May 8, 2009Nov 18, 2010Shawn Michael GenenbacherMagnetic Light Fixture
US20110013380 *Jan 20, 2011Au Optronics Corp.Backlight Structure Including Clipping Connectors
US20110110085 *May 12, 2011Cooper Technologies CompanyLight Emitting Diode Module
Classifications
U.S. Classification439/40, 446/129, 439/239, 335/285, 362/398, 439/232
International ClassificationF21V21/08, H01R13/62, F21V19/00
Cooperative ClassificationF21V19/0085, H01R13/6205, F21V21/08
European ClassificationH01R13/62A, F21V21/08, F21V19/00F1A