US3546523A - Circular lamp base - Google Patents

Circular lamp base Download PDF

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Publication number
US3546523A
US3546523A US781402A US3546523DA US3546523A US 3546523 A US3546523 A US 3546523A US 781402 A US781402 A US 781402A US 3546523D A US3546523D A US 3546523DA US 3546523 A US3546523 A US 3546523A
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US
United States
Prior art keywords
base
holder
cap
pair
lead
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
US781402A
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English (en)
Inventor
Marcellus N Gilbert Jr
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric 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 Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Application granted granted Critical
Publication of US3546523A publication Critical patent/US3546523A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • H01J5/62—Connection of wires protruding from the vessel to connectors carried by the separate part

Definitions

  • Circular fluorescent lamps which are circular in configuration are employed.
  • Circular fluorescent lamps are usually provided with a single base which bridges the adjacent ends thereof, and the base usually comprises two semicyclindrical sections which, when assembled in position, are secured to one another by screws, rivets or the like.
  • One of these base sections is provided with metal pins, to the inner ends of which the several lamp lead-in wires are connected, whereas the other base section usually serves as a cap or cover member.
  • the two sections which usually comprise the base are usually secured to one another by screws, rivets or the like. These metal members form a short external arc path between the pins and they also detract from the appearance of the finished product.
  • the principal object of this invention is to provide a circular fluorescent lamp base which does not require the use of screws, rivets or the like to join the sections thereof to one another and which includes a weldless, solderless connection of the lamp lead-in wires to the base pins.
  • FIG. 1 is a plan view of a circular fluorescent lamp with a base of this invention secured thereto.
  • FIG. 2 is a sectional view of the base of FIG. 1 taken along the line 2-2 thereof.
  • FIG. 3 is a plan view of the cap section of the base as viewed along the line 3-3 of FIG. 2..
  • FIG. 4 is a plan view of the pin section of the base as viewed along the line 4-4 of FIG. 2..
  • FIG. 5 is an exploded view of the base with the lamp lead-in wires in position therein.
  • FIG. 6 is a sectional view on an enlarged scale of the pin section of the base showing particularly the base pins and the lamp leadin wires secured therein, as viewed along the line 6-6 of FIG. 4.
  • FIG. 7 is a sectional view of the pin section of the base, taken along the line 7-7 of FIG. 6, showing in addition the lamp lead-in wires held by the base pins and a fragmentary portion of the cap section disposed in closed relationship with respect to the pin section.
  • a circular fluorescent lamp 10 is shown with a base 12 secured thereto.
  • the base 12 comprises two semicylindrical sections, a cap 14 (FIG. 3) and a holder 16 (FIGS. 4 and 6) within which a plurality of base pins 18 are located and supported.
  • the holder 16 is provided with a pair of spaced walls 20, serrated at the top to define a pair of Vs 22 in the top of each wall.
  • Each wall 20 is provided with two bores and counterbores 24 etxending from the apex of the Vs 22 to the outside face of the holder 16.
  • Base pins 18 are located in these bores 24, extending from the apex of the VS 22 to a point somewhat beyond the outside. face of the holder 16.
  • Each wall 20 is provided with a slot 26 cut therein from the apex of each of the VS 22 and the top of each pin 18 is slotted similarly to receive a lamp lead-in wire 28.
  • the free end segment of each lead-in wire 28 lies across and within one of the slotted pins 18 and its corresponding slot 26 in the walls 20.
  • the cap 14 of the base 12 is provided with a pair of closely spaced center blades 30 and a pair of end blades 32, all of which are double Vs at the top thereof.
  • the center blades 30 of the iap 14 are located between the pair of spaced walls 20 of the holder 16 and the end blades 32 of the cap 14 lie adjacent to and outside of the pair of spaced walls 20* of the holder 16.
  • the double Vs at the tops of the blades 30 and 32 of the cap 14 cooperate with the slots 26 in the walls 20 of the holder 16 so as to define a precise locus for that segment of each of the lead-in wires which lies therein.
  • this arrangement also contributes to the retention of the lead-in wires in their proper positions.
  • the top of the cap 14 is provided with a pair of pins 34 on one side thereof and a pair of holes 36 on the other side thereof.
  • holder 16 is provided with a pair of pins 38 on one side thereof and a pair of holes 40 on the other side thereof.
  • This hole-pin arrangement provides an orienting alignment means which precludes assembly of the two base sections in any manner other than the correct one.
  • the means employed to elfect securing of the cap 14 and holder 16 to one another comprises a pair of tongues 42 (FIG. 5) formed integral with the cap 14 and a pair of cooperating lips 44 (FIG. 5). formed integral with the holder 16.
  • the diameter of the lead-in wire is slightly larger than the width of the slot in the base pin and thus it will be deformed as it is driven into the pin, thereby providing a very tight joint between the two members, so strong that in tests the lead-in wire usually breaks before the joint is broken.
  • the cap 14 is then positioned on the holder 16 by first aligning the pins and holes 34, 36 in cap 14 with the holes and pins 40, 38 in the holder 16 to insure proper orientation and then forcing the cap and holder against one another until the tongues 42 and lips 44 snap into interlocking engagement with one another.
  • a base bridging the adjacent ends of a circular fluorescent lamp having a pair of lead-in wires extending from each end thereof, said base comprising: a substantially semicylindrical holder and mating, substantially semicylindrical cap, said holder having a pair of spaced walls, each of said walls having a pair of bores formed therein and extending therethrough, a base pin located within each of said bores, the inner end of each base pin being slotted and having one of said lead-in wires lying thereacross and force-fitted therein.
  • each of said walls is provided with a transverse slot therein extending from the apex of each of said Vs and being aligned with the slots in said base pins whereby said lead-in wires extend therethrough.
  • said cap has at least one center blade and a pair of end blades, said center blade being disposed between the spaced walls of said holder and said end blades being disposed along the outside of said spaced walls, the tops of said center blade and said end blades being serrated to provide each of them with a pair of VS, said Vs in said blades and said Vs in said walls being aligned whereby said lead-in wires extend therethrough and thus occupy a predetermined locus within said base.

Landscapes

  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
US781402A 1968-12-05 1968-12-05 Circular lamp base Expired - Lifetime US3546523A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78140268A 1968-12-05 1968-12-05

Publications (1)

Publication Number Publication Date
US3546523A true US3546523A (en) 1970-12-08

Family

ID=25122618

Family Applications (1)

Application Number Title Priority Date Filing Date
US781402A Expired - Lifetime US3546523A (en) 1968-12-05 1968-12-05 Circular lamp base

Country Status (3)

Country Link
US (1) US3546523A (enrdf_load_stackoverflow)
DE (1) DE6947124U (enrdf_load_stackoverflow)
GB (1) GB1258175A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795887A (en) * 1971-09-20 1974-03-05 Matsushita Electronics Corp Base for annular lamp
US3839671A (en) * 1973-07-12 1974-10-01 M Gerry Ignition indicator
US3898495A (en) * 1974-04-05 1975-08-05 Westinghouse Electric Corp Circular fluorescent lamp with two-piece snap-lock base
US4002394A (en) * 1975-10-10 1977-01-11 General Electric Company Single latch snap-lock base for annular fluorescent lamps
US4278911A (en) * 1979-06-13 1981-07-14 General Electric Company Circular fluorescent lamp unit
US4326146A (en) * 1980-04-02 1982-04-20 Westinghouse Electric Corp. Base and terminal-pin assembly for electric lamps and similar devices

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3271613A (en) * 1962-12-06 1966-09-06 Westinghouse Electric Corp Stress-relieved seal structure for arcuate fluorescent lamp or the like

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3271613A (en) * 1962-12-06 1966-09-06 Westinghouse Electric Corp Stress-relieved seal structure for arcuate fluorescent lamp or the like

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795887A (en) * 1971-09-20 1974-03-05 Matsushita Electronics Corp Base for annular lamp
US3839671A (en) * 1973-07-12 1974-10-01 M Gerry Ignition indicator
US3898495A (en) * 1974-04-05 1975-08-05 Westinghouse Electric Corp Circular fluorescent lamp with two-piece snap-lock base
US4002394A (en) * 1975-10-10 1977-01-11 General Electric Company Single latch snap-lock base for annular fluorescent lamps
US4278911A (en) * 1979-06-13 1981-07-14 General Electric Company Circular fluorescent lamp unit
US4326146A (en) * 1980-04-02 1982-04-20 Westinghouse Electric Corp. Base and terminal-pin assembly for electric lamps and similar devices

Also Published As

Publication number Publication date
GB1258175A (enrdf_load_stackoverflow) 1971-12-22
DE6947124U (de) 1970-04-30

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