US3028523A - Light dimming adaptor for three-way lamps - Google Patents

Light dimming adaptor for three-way lamps Download PDF

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Publication number
US3028523A
US3028523A US29879A US2987960A US3028523A US 3028523 A US3028523 A US 3028523A US 29879 A US29879 A US 29879A US 2987960 A US2987960 A US 2987960A US 3028523 A US3028523 A US 3028523A
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United States
Prior art keywords
bulb
terminals
terminal
adaptor
lamp
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
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US29879A
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English (en)
Inventor
Seid Eugene
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
California Computer Products Inc
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California Computer Products Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by California Computer Products Inc filed Critical California Computer Products Inc
Priority to US29879A priority Critical patent/US3028523A/en
Priority to GB17612/61A priority patent/GB989434A/en
Priority to LU40148D priority patent/LU40148A1/xx
Priority to BE603912A priority patent/BE603912A/fr
Application granted granted Critical
Publication of US3028523A publication Critical patent/US3028523A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/04—Controlling
    • H05B39/06—Switching arrangements, e.g. from series operation to parallel operation

Definitions

  • FIG. 2a EUGENE- ⁇ SEID ATTORNEY United States LIGHT DIMMING ADAPTOR FOR THREE-WAY LAMPS Eugene Seid, Inglewood, Caliii, assignor to California Computer Products, Inc, Downey, Califi, a corporation of California Filed May 18, 1960, Ser. No. 29,879
  • This invention relates to the light dimming art, and in particular to an improved apparatus for converting a three-way floor or table lamp (that ordinarily accommodates a two-filament incandescent bulb to provide different illuminationlevels) to accommodate a common,
  • single-filamentincandescent bulb and still provide for different illumination levels from the bulb.
  • a three-way bulb socket of the kind usable in residen of twice that of the conventional single-filament bulb, the purchase of a three-way floor or table lamp has heretofore committed the consumer to the continued purchase of the relatively costly two-filament bulbs.
  • one of the objects of this invention is to provide an improved means for enabling the owner of a three-way lamp to use single-filament bulbs in the lamp and still be able to secure different illumination levels from the lamp.
  • the adaptor apparatus takesthe form-of'an, elongated screw-in device.
  • One end of the-device is threaded to receive a common, single-filament bulb; the other end of the device is threaded for ins'ertion into the bulb receiving socket of the three-way lamp to be converted.
  • the bulb receiving-or female end of the device has the usual two bulb-receiving terminals; the other'end, the'male end of the device, is provided with an array of three terminals corresponding in location to the three terminals of the conventional three-way bulb.
  • a first terminal of the female end is connected .to a first terminal of the male end; the second terminal of the femaleen d .is-connected to a second terminal of the male end,'and; the third-terminal of the male end is electricallyconnected to a half-wave rectifier, the rectifier in turn-being connected to the second terminal of the female end.
  • FIGURE l. is a sectional view of an adaptor according to the invention.
  • FIGURE 2a is a schematicrepresentation of a circuit wherein a vthree-way lampis adapted to accommodate a single-filament bulb by means of the adaptor depictedin FIGURE 1;
  • FIGURES 2b, 2c, and 2d are schematic representations of respectively, successive positionsof a switch arrangement illustrated .inFIG. 2a.
  • a single filament, 200 watt bulb can be energized to provide an effective 200 watt illuminationleveLand can also be energized at a second position toprovide an illumination level corresponding to of the order of about watts.
  • the elongated adaptor 10 is made up of a male 'base member '14, 'a female bulb-receiving member 12, and uni-directional current passage device or rectifier "28.
  • the male member'14 is threaded for insertion into the bulb-receiving socket (not shown) of the three-Way lamp (not shown) 'to'be adapted.
  • the male member 14 is provided with an array of three coaxial parts or terminals: an outermost terminal 22, an intermediate terminal 24, and an innermost terminal 26. .
  • These termina'ls correspond in location to the .three terminals oi' the conventional three-Way 'bulb whose place is to be taken by the adaptor 10.
  • the female or bulb-receiving member 12 is threaded to receive a common, single-filament bulb (indicated schematicallyin FIG. 2a by the numeral'lili) To this end the female member '12 has two coaxial parts'or terminals, an inner terminal 29 and an outer-terminal 16. i
  • the rectifier23 which may for example take the form of asilicon diode, is electrically connected in series between the inner terminal .20 of the female member and the innermost terminal 26 of the male member 14.
  • a band of insulating material 44 is fixed around the outer terminal 16 of the female member 12 in order to assure that no metallic portions of the adaptor will be normally contacted during insertion of the adaptor into a lamp.
  • the elongated dimension of the adaptor 10 is preferably made as small as possible, Accordingly, the distance between the entrance portion of the female member (the portion indicated by numeral 16) and the closed portion of the female member (the portion indicated by numeral 18) is made relatively small, as is the distance between the closed portion 18 of the female member and the base portion of the male memher (the portion adjacent to the inner terminal 20). Similarly, the distance between the base portion of the male member and its terminal portion (the portion of the male member adjacent to the innermost terminal 26) is also made relatively small.
  • an overall length of about 1 /2 inches is sufficient to enable the adaptor It) to provide both the desired physical support for the bulb accommodated by the adaptor and the desired electrical connections, and at the same time allow the adaptor 10 to be screwed into a three-way lamp socket to an extent suflicient to enable the socket both to physically support the adaptor and to make the desired electrical contact with the adaptor.
  • the rectifier 28 is illustrated as being connected between the inner terminal 20 of the female member 12 and the innermost terminal 26 of the male member 14, it will be appreciated that the rectifier may instead be connected between different combinations of male and female member terminals.
  • the rectifier 28 may instead be positioned and electrically connected between the intermediate terminal 24 of the male member and the inner terminal 20 of the female member, with this inner terminal 20 and the male member innermost terminal 26 directly connected to each other.
  • FIGS. 2a, 2b, 2c, and 2d will now be referred to in connection with a description of the operation of the adaptor of the invention.
  • FIG. 2a schematically depicts the adaptor 10 described above, the single-filament bulb 30 whose illumination level is to be controlled, and the three-way lamp to be converted for reception of singlefilament bulbs.
  • the three-way lamp to be converted normally includes a rotary switch having a rotor 32 and three rotor terminals 34, 36, and 38. Alternating current is received by the lamp by means of a conventional two- Wire cord. One current supply wire is connected to directly energize the device mounted in the lamp (the wire terminating at the terminal 22). The other current supply wire is connected to one terminal 38 of the rotary switch.
  • the rotor 32 of the rotary switch has a circumferential extant that is integral and electrically conductive along approximately 270 of its circumference, and that is insulating along approximately 90 of its circumference (the portion of the rotor'indicated at numeral 46).
  • the angular position of the rotor 32 determines whether current will be passed from terminal 38 to terminal 36, from terminal 38 to terminal 34, or whether no current shall flow through the lamp.
  • the insulating portion 46 of the rotor is adjacent to terminal 38; hence, no current flows through the lamp.
  • a successive position of the rotor depicted in FIG.
  • the insulating portion of the rotor 32 insulates terminal 36, but directly connects terminals 38 and 34; hence current passes from terminal 38, through terminal 34, and to the other terminal 24 of the device connected to the lamp.
  • the insulating portion of the rotor 32 is positioned adjacent to terminal 34, and terminals 38 and 36 are electrically connected to each other through the rotor; thus, current passes from terminal 38 to terminal 36, and to a third terminal 26 of the device connected to the lamp.
  • the terminal 38 is electrically connected to both terminals 34 and 36; current thus passes from terminal 38 to both of the device terminals 24 and 26.
  • one terminal 22 of the adapter 10 (FIGS. 1 and 2a) is always connected to the alternating current source, while the other terminals 24 and 26 of the adaptor are selectively energized under the control of the rotor 32 of the lamp.
  • the adaptor 10 will control the illumination level of the single-filament bulb 30 to off, bright, dim, and bright as the lamp switch takes the positions represented in, respectively, FIGS. 2a through 20.. These successive positions represent, respectively, a condition where no current flows through the bulb 39, a condition where the full source alternating current is passed to the bulb to elfect its illumination at a full brilliancy level, a condition where pulsating direct current is passed to the bulb by virtue of the connection of the rectifier 28 in series with the bulb (whereupon the bulb is illuminated at an appreciably lower than a full brilliance level), and another condition where the full source alternating current is passed to the bulb to again effect its illumination at afull brilliancy level.
  • the rectifier 28 is physically located so that the innermost male member terminal 26 is in immediate adjacency to the rectifier. This preferred arrangement is desired for the reason that any heat generated in the rectifier 28 will be quickly conducted to the innermost terminal 26, and then to the lamp portion with which this terminal is in contact.
  • the high thermal conductivity of the arrangement allows the rectifier to be operated at a higher current rating than would be the case if the rectifier were thermally insulated from any of the adaptor terminals 22, 24, or 26 that mate with the lamp. 7 7
  • innermost terminal 26 may itself comprise one of the rectifier terminals.
  • FIG. 1 has yet another advantage.
  • An incandescent bulb filament has appreciably less resistance when it is cold than when it is hot; the momentary current flow through a cold bulb filament is of the order of 25 times that of the normal flow through a hot filament.
  • the subjection of a rectifier, especially a silicon crystal diode, to the cold flow current leads to a shortening of the life of the rectifier by virtue of the overload presented to the rectifier each time that it controls current flow to a cold bulb.
  • the bulb is always subjected to full brilliancy energization prior to a subjection to low level illumination. Hence, the bulb is always heated to its normal, hot operating level prior to the subjection of the rectifier to bulb intercepting current flow. Consequently, this arrangement obviates the need for heavy duty rectifiers in the arrangement of the invention.
  • the arrangement of the invention provides an improved means for enabling the owner of a three-way lamp to use single-filament bulbs in the lamp and still be able to secure appreciably different illumination levels from the lamp.
  • a female member having an en part, and said closed portion of said female member having inner and outer parts; said outer part of said female member being connected to said outer part of said male member, and said inner part of said female member being connected to one of the inner parts of said male member; and a uni-directional passage device connected between said inner part of said female member and the other one of said inner parts of said male member.
  • a three-way electric lamp having a three terminal female socket of the kind normally used for the receipt of a male portion of a two filament, threeway incandescent bulb; and an adaptor unit mateable with said three terminal lamp socket for enabling said socket to receive single-filament incandescent bulbs and controlling the illumination level of such single-filament bulbs to V uniquely different illuminations levels.
  • a three-way electric lamp having a threaded three terminal female socket of the kind normally used for the receipt of a male portion of a threaded two filament, three-way incandescent bulb; and an adaptor unit mateable with said three terminal lamp socket for enabling said socket to receive single-filament incandescent bulbs and controlling the illumination level of such singlefilament bulbs to uniquely different levels.
  • An adaptor arrangement for converting a three-way incandescent bulb socket for the receipt of a single-filament bulb, while enabling the single-filament bulb to provide two uniquely different levels of illumination during normal operation of the socket comprising: a male member; a female member fixed to said male member; and a unilateral conduction device electrically connected between said members; said male member having three mutually insulated electrical terminals with said terminals being arranged to mate with corresponding terminals in a normal three-way lamp socket during insertion of 'said male member into said socket; said female member having two mutually insulated terminals arranged to mate with corresponding terminals of a normal single-filament bulb; a. first of said male terminals being connected to a first of said female terminals, 2. second of said male terminals being connected to the second of said female ter minals, and said unilateral conduction device electrically connected between the third of said male terminals and said second of said female terminals.
  • An adaptor arrangement for converting a switch controlled three-way incandescent bulb socket for the receipt of a single-filament bulb, while enabling the singlefilament bulb to provide two uniquely different levels of illumination during normal operation of the switch comprising: a male member; a female member fixed to said male member; and a diode electrically connected between said members; said male member having three mutually insulated electrical terminals with said terminals being arranged to mate with corresponding terminals in a normal three-way lamp socket, said female member having two mutually insulated terminals arranged to mate with corresponding terminals of a normal, single-lflament bulb; a first of said male terminals being threaded, a first of said female terminals being threaded, with said first terminals being fixed to each other; a second of said tenninals being connected to the second of said female terminals, and said diode being electrically connected between the third of said male terminals and said second of said female terminals.
  • a three-way electric lamp having a three terminal female socket of the kind normally used for the reception of a male portion of a two-filament, three-way incandescent bulb; and an adaptor unit mateable with said three-way lamp socket for enabling said socket to receive single-filament incandescent bulbs and controlling the illumination level of such single-filament bulbs to uniquely different illumination levels;
  • said adaptor comprising two members, one of said members including an array of three electric terminals corresponding in position to the three electric terminals of the three-way bulb normally insertable into said lamp socket, and a second member having two terminals arranged in an array to receive the normal, single-filament to be converted for use in said lamp; and rectifier means electrically connected between one of the three terminals of said first member and a second of said three terminals of said first member.
  • An adaptor arrangement for manually converting a three-way incandescent bulb socket for the receipt of a single-filament bulb, during continued energization of said socket from a source of electricity to enable the singlefilament bulb to provide two uniquely different levels of illumination during normal operation of the socket comprising: a male member; a female member fixed to said mme member; and a diode electrically connected between said members; said male member having three, mutually insulated electrical terminals with said terminals being arranged to mate with corresponding terminals in a normal three-way lamp socket during insertion of said male member into said socket; said female member having two mutually insulated terminals arranged to mate with corresponding terminals of a normal, single-filament bulb; a first of said male terminals being connected to a first of said female terminals, a second of said male terminals being connected to the second of said female terminals, said diode electrically connected between the third of said male terminals and said second of said female terminals; one of said female terminals

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
US29879A 1960-05-18 1960-05-18 Light dimming adaptor for three-way lamps Expired - Lifetime US3028523A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US29879A US3028523A (en) 1960-05-18 1960-05-18 Light dimming adaptor for three-way lamps
GB17612/61A GB989434A (en) 1960-05-18 1961-05-15 Light dimming adaptor for three-way lamps of the floor or table type
LU40148D LU40148A1 (enExample) 1960-05-18 1961-05-17
BE603912A BE603912A (fr) 1960-05-18 1961-05-17 Adaptateur de mise en veilleuse pour lampes à incandescence à trois niveaux d'éclairage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29879A US3028523A (en) 1960-05-18 1960-05-18 Light dimming adaptor for three-way lamps

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US3028523A true US3028523A (en) 1962-04-03

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US29879A Expired - Lifetime US3028523A (en) 1960-05-18 1960-05-18 Light dimming adaptor for three-way lamps

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US (1) US3028523A (enExample)
BE (1) BE603912A (enExample)
GB (1) GB989434A (enExample)
LU (1) LU40148A1 (enExample)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3355612A (en) * 1965-07-13 1967-11-28 Sylvania Electric Prod Incandescent lamp
US3372302A (en) * 1964-04-21 1968-03-05 California Comp Products Inc Adaptor mechanism for light circuits
US3416028A (en) * 1966-01-03 1968-12-10 Sylvania Electric Prod Circuit for operating multifilament incandescent lamps at different intensities
US4117376A (en) * 1974-02-12 1978-09-26 Peter Andrews Electric energy saving incandescent lamp socket combination switching device
US4184141A (en) * 1978-03-20 1980-01-15 Chung Kyung Cho Slow socket
USD257839S (en) 1978-10-16 1981-01-13 Moussette Robert A Lightbulb dimmer socket
EP0025329A1 (en) * 1979-09-06 1981-03-18 English Electric Valve Company Limited Improvements in or relating to lamps
US4488082A (en) * 1983-01-21 1984-12-11 Invocas, Inc. Bi-fitted incandescent electric light bulbs with internal electrically parallel conductors
US4499398A (en) * 1982-06-08 1985-02-12 Munroe Ronald G Incandescent lighting
US4500813A (en) * 1982-07-28 1985-02-19 Weedall Dennis L Lighting system
US4549116A (en) * 1972-04-03 1985-10-22 Peter Andrews Electric energy saving two-position combination switching device
US4835406A (en) * 1984-10-29 1989-05-30 Roenndahl Sylve Switching device
US4888678A (en) * 1988-09-30 1989-12-19 Sundhar Shaam P Electric socket adapter
US5168207A (en) * 1991-02-11 1992-12-01 Ford Motor Company Three level control system for a voltage dependent load
US5831395A (en) * 1996-01-11 1998-11-03 Magnetek, Inc. Three-way fluorescent adapter
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
US8328582B1 (en) 2009-02-01 2012-12-11 MagicLux, LLC Shortened adapter for light bulb sockets with miniature remote controller

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145577A (en) * 1983-08-23 1985-03-27 Starpoint Electrics Ltd Lampholder having internally mounted diode
GB2146181A (en) * 1983-08-31 1985-04-11 Wooil Jeonkwang Co Ltd Lighting control device
GB8505698D0 (en) * 1985-03-05 1985-04-03 Middleton G Power saver

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1452115A (en) * 1916-07-24 1923-04-17 Electric Aux Ies Company Dimming mechanism
US2385386A (en) * 1943-05-07 1945-09-25 Ohio Carbon Company Method of making resistors
US2421321A (en) * 1945-08-13 1947-05-27 Dial Light Co Of America Inc Gaseous conduction lamp socket

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1452115A (en) * 1916-07-24 1923-04-17 Electric Aux Ies Company Dimming mechanism
US2385386A (en) * 1943-05-07 1945-09-25 Ohio Carbon Company Method of making resistors
US2421321A (en) * 1945-08-13 1947-05-27 Dial Light Co Of America Inc Gaseous conduction lamp socket

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372302A (en) * 1964-04-21 1968-03-05 California Comp Products Inc Adaptor mechanism for light circuits
US3355612A (en) * 1965-07-13 1967-11-28 Sylvania Electric Prod Incandescent lamp
US3416028A (en) * 1966-01-03 1968-12-10 Sylvania Electric Prod Circuit for operating multifilament incandescent lamps at different intensities
US4549116A (en) * 1972-04-03 1985-10-22 Peter Andrews Electric energy saving two-position combination switching device
US4117376A (en) * 1974-02-12 1978-09-26 Peter Andrews Electric energy saving incandescent lamp socket combination switching device
US4184141A (en) * 1978-03-20 1980-01-15 Chung Kyung Cho Slow socket
USD257839S (en) 1978-10-16 1981-01-13 Moussette Robert A Lightbulb dimmer socket
EP0025329A1 (en) * 1979-09-06 1981-03-18 English Electric Valve Company Limited Improvements in or relating to lamps
US4499398A (en) * 1982-06-08 1985-02-12 Munroe Ronald G Incandescent lighting
US4500813A (en) * 1982-07-28 1985-02-19 Weedall Dennis L Lighting system
US4488082A (en) * 1983-01-21 1984-12-11 Invocas, Inc. Bi-fitted incandescent electric light bulbs with internal electrically parallel conductors
US4835406A (en) * 1984-10-29 1989-05-30 Roenndahl Sylve Switching device
WO1990003687A1 (en) * 1988-09-30 1990-04-05 Sundhar Shaam P Electric socket adapter
US4888678A (en) * 1988-09-30 1989-12-19 Sundhar Shaam P Electric socket adapter
US5168207A (en) * 1991-02-11 1992-12-01 Ford Motor Company Three level control system for a voltage dependent load
US5831395A (en) * 1996-01-11 1998-11-03 Magnetek, Inc. Three-way fluorescent adapter
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
US8328582B1 (en) 2009-02-01 2012-12-11 MagicLux, LLC Shortened adapter for light bulb sockets with miniature remote controller
US8508148B1 (en) 2009-02-01 2013-08-13 MagicLux, LLC System for light and appliance remote control
US9135812B1 (en) 2009-02-01 2015-09-15 MagicLux, LLC Miniature remote controller
US9202368B1 (en) 2009-02-01 2015-12-01 MagicLux, LLC System for light and appliance remote control

Also Published As

Publication number Publication date
BE603912A (fr) 1961-09-18
LU40148A1 (enExample) 1961-07-17
GB989434A (en) 1965-04-14

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