US3697802A - Two-terminal, two-color indicator lamp assembly - Google Patents

Two-terminal, two-color indicator lamp assembly Download PDF

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Publication number
US3697802A
US3697802A US79737A US3697802DA US3697802A US 3697802 A US3697802 A US 3697802A US 79737 A US79737 A US 79737A US 3697802D A US3697802D A US 3697802DA US 3697802 A US3697802 A US 3697802A
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United States
Prior art keywords
terminal
filament
lamp
lamp envelope
terminals
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Expired - Lifetime
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US79737A
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English (en)
Inventor
Nickolas P Demas
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Cooper Industries LLC
Original Assignee
Wagner Electric Corp
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Filing date
Publication date
Application filed by Wagner Electric Corp filed Critical Wagner Electric Corp
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Publication of US3697802A publication Critical patent/US3697802A/en
Assigned to STUDEBAKER-WORTHINGTON, INC. reassignment STUDEBAKER-WORTHINGTON, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WAGNER ELECTRIC CORPORATION
Assigned to EDISON INTERNATONAL, INC. reassignment EDISON INTERNATONAL, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: STUDEBAKER-WORTHINGTON, INC., A CORP. OF DE
Assigned to COOPER INDUSTRIES, INC., 1001 FANNIN, HOUSTON, TEXAS 77002, A CORP. OF reassignment COOPER INDUSTRIES, INC., 1001 FANNIN, HOUSTON, TEXAS 77002, A CORP. OF ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: EDISON INTERNATIONAL, INC., A CORP. OF DE.
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Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/62—One or more circuit elements structurally associated with the lamp
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources

Definitions

  • ABSTRACT A two-terminal, two-color indicator lamp assembly comprising two separately energizable filaments positioned behind different-colored portions of the lamp envelope along the line of sight.
  • the lamp envelope is mechanically connected to a pair of terminals to form a telephone slide base, and a pair of diodes is interconnected between said terminals and said filaments to enable energization of one filament only when the polarity of the first terminal is positive with respect to the polarity of the second terminal, and to enable energization of the other filament only when the polarity of said second terminal is positive with respect to the first terminal.
  • the present application relates to a two-terminal, two-color indicator lamp assembly having the capability of providing light signals of different colors in response to the application of voltages of opposing polarities across the terminals. More specifically, the lamp assembly disclosed herein comprises an envelope having first and second filaments and related support means enclosed therein, with the filaments being positioned behind different-colored portions of the viewing surface of the envelope.
  • the first and second terminals are mechanically connected to the lamp envelope, and first and second diodes are interconnected between first and second filaments and the first and second terminals to enable energization of the first and second filaments only in response to applied voltages between said terminals of first and second polarities, respectively.
  • the disclosed lamp assembly has utility in testing equipment for telephone apparatus and in the key sets of telephones which are part of an aural-visual communication installation, for example.
  • FIG. 1 is a view of a two-terminal, two-color lamp assembly exploded along its longitudinal axis (L/A), representing a preferred embodiment of the applicants invention
  • FIG. 2 is a schematic diagram of the circuit of the lamp assembly shown in FIG. 1;
  • FIG. 3 is a plan view (i.e., along the line of sight) of the lamp assembly shown in exploded form in FIG. 1;
  • FIGS. 4 and 5 are, respectively, first and second side elevations of the lamp assembly shown in FIGS. 1 and 3.
  • the lamp comprises an envelope 12 having a fiat end comprising a clear (i.e., colorless) portion 14 and a colored portion 16.
  • Filaments l8 and are situated adjacent the clear and colored portions 14 and 16, respectively.
  • Filament 18 is disposed between a first pair of support members 22 and 24, while filament 20 is disposed between a second pair of support members 26 and 28.
  • the pairs of support members 22, 24 and 26, 28 extend through insulating members 30 and 32, respectively, which serve to space the support members from one another within the lamp envelope.
  • each of the support members 22, 24, 26 and 28 has a portion extending through and exterior of the envelope 12 to form leads 36, 38, 40 and 42, respectively.
  • Diodes 44 and 46 are positioned on opposite sides of the tapered lower portion of envelope 12 of the lamp assembly.
  • the anodes of diodes 44 and 46 are connected to lead portions 36 and 40, respectively, and to terminals 48 and 50, respectively, by a conducting cement.
  • the cathodes of diodes 44 and 46 are connected to one another and to each of the lead portions 38 and 42 to form a four-way junction.
  • terminal 48 when terminal 48 is positive with respect to terminal 40, current will be shunted past filament 18 by diode 44 and, being blocked by diode 46, will flow through filament 20 to terminal 50. Thus, when terminal 48 is sufficiently positive with respect to terminal 50, a first indicating light will be generated. On the other hand, if terminal 50 is sufficiently positive with respect to terminal 48, current will be shunted past filament 20 by diode 46 and, being blocked by diode 44, will flow through filament 18 to terminal 48. Thus, whenever terminal 40 is sufficiently positive with respect to terminal 48, a second indicating light will be generated.
  • FIG. 3 is an end-on view of the lamp assembly shown in exploded form in FIG. 1, showing the clear portion 14 and the colored portion 16 of the flat end portion of the lamp envelope 12.
  • This view illustrates the appearance of the lamp assembly when viewed along the line of sight, which coincides with the longitudinal axis LIA in the embodiment shown. Also shown in the manner in which the portions 48a, 48b, and 48c of terminal 48 and the portions 50a, 50b and 500 of terminal 50 extend about and contact the adjacent periphery of the lamp envelope 12, to which the terminals are secured by conducting cement.
  • FIG. 4 is a first side elevation of the lamp assembly shown in exploded form in FIG. 1 and shown in FIG. 3. This view shows the manner in which the diodes 44 and 46 are mounted in the space between the tapered lower portion of the lamp envelope 12 and the adjacent terminals 48 and 50. Specifically, the diodes 44 and 46 are angled toward the location at which their cathodes join in a four-way junction with lead portions 38 and 42 on the side of the lamp assembly opposite the side shown in this figure.
  • the pointed region 34 of the envelope 12 is embedded in a solidified insulating cement 52, which also serves to separate and insulate portions 48d and 50d of terminals 48 and 50, respectively.
  • the anodes of diodes 44 and 46 are electrically connected to terminals 48 and 50, respectively, by a conductive cement which also serves to secure the terminals to the lamp envelope 12 (connections not visible).
  • a conductive cement which also serves to secure the terminals to the lamp envelope 12 (connections not visible).
  • FIG. 5 is a second side elevation of the lamp assembly shown in exploded form in FIG. 1 and shown in FIGS. 3 and 4, this view being produced by rotating the lamp assembly as shown in FIG. 4 about its longitudinal axis (L/A) by clockwise.
  • the various angularly related portions 50a, 50b, 50c and 50d of terminal 50 are shown in this figure, as is the disposition of filament 20 within the lamp envelope 12.
  • the clear portion 14 may also be colored to contrast more sharply with the colored portion 16.
  • a lamp assembly adapted for side viewing could be readily produced by spacing the filaments l8 and 20 apart along the longitudinal axis LIA of the lamp and coloring an annular segment of the upper cylindrical portion of the lamp envelope behind which one of the filaments is located along the line of sight.
  • a single lamp assembly adapted for both end-on and side viewing may be formed simply by combining the features of the end-on and side viewing lamps. Also,
  • a lamp assembly comprising:
  • a lamp envelope having first and second portions of which at least said second portion is translucently colored;
  • first and second filaments spaced apart within said lamp envelope, said first filament being positioned behind said first portion along the line of sight and said second filament being positioned behind said second portion along the line of sight;
  • first and second supporting means operative to retain said first and second filaments, respectively, in position within said lamp envelope, and having lead portions extending through and exterior of said lamp envelope;
  • polarity-sensing circuit means interconnected between said lead portions and said first and second terminals to enable energization only of said second filament when said first terminal is at a minimum predetermined positive potential with respect to said second terminal, and to enable energization only of said first filament when said second terminal is at a minimum predetermined positive potential with respect to said first terminal.
  • first and second supporting means each comprises a pair of support members extending through first and second insulating members, respectively, which serve to space each support member of each pair from one another and to space each pair of support members from the other.
  • said polarity sensing means comprises first and second diodes, each having its cathode connected to one side of each filament, and said first diode having its anode connected to the other side of said first filament and to said terminal, and the anode of said second diode being connected to the other side of said second filament and to said second terminal.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Audible And Visible Signals (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
US79737A 1970-10-12 1970-10-12 Two-terminal, two-color indicator lamp assembly Expired - Lifetime US3697802A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7973770A 1970-10-12 1970-10-12

Publications (1)

Publication Number Publication Date
US3697802A true US3697802A (en) 1972-10-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
US79737A Expired - Lifetime US3697802A (en) 1970-10-12 1970-10-12 Two-terminal, two-color indicator lamp assembly

Country Status (6)

Country Link
US (1) US3697802A (enrdf_load_stackoverflow)
CA (1) CA950538A (enrdf_load_stackoverflow)
DE (1) DE2149686C3 (enrdf_load_stackoverflow)
FR (1) FR2111276A5 (enrdf_load_stackoverflow)
GB (1) GB1329667A (enrdf_load_stackoverflow)
IT (1) IT940955B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795830A (en) * 1972-08-17 1974-03-05 Shelton J Led slidebase switchboard lamp
US4458179A (en) * 1982-03-26 1984-07-03 American Sterilizer Company Controller for lamp having more than one light source
US4841196A (en) * 1987-12-09 1989-06-20 Gte Products Corporation Two-filament lamp and operating circuit and method for designing same
US5331734A (en) * 1990-03-12 1994-07-26 Hunt Arthur R Method for installing an electrical device having pins into pin sockets
US20040090190A1 (en) * 2001-05-03 2004-05-13 Alan Shields Lamp with multiple light-producing elements

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3125428C1 (de) * 1981-06-27 1983-01-13 Heinz 6521 Offstein Bollmann Vorrichtung zur Erzeugung von Licht
SE8405396L (sv) * 1984-10-29 1986-04-30 Sylve Ronndahl Omkopplingsanordning

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1666876A (en) * 1923-01-17 1928-04-17 Price Sidney Leopold Lamp for use on motor vehicles and for other purposes
US1947243A (en) * 1932-07-28 1934-02-13 Gen Electric Electric lamp
US3304498A (en) * 1963-05-15 1967-02-14 Ideal Ind Voltage, polarity and frequency tester having a. c.-d. c. compensation and gas tube indicators
US3319115A (en) * 1964-11-04 1967-05-09 William T Smith Standby circuit using a two filament incandescent lamp to maintain approximately thesame light output

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1666876A (en) * 1923-01-17 1928-04-17 Price Sidney Leopold Lamp for use on motor vehicles and for other purposes
US1947243A (en) * 1932-07-28 1934-02-13 Gen Electric Electric lamp
US3304498A (en) * 1963-05-15 1967-02-14 Ideal Ind Voltage, polarity and frequency tester having a. c.-d. c. compensation and gas tube indicators
US3319115A (en) * 1964-11-04 1967-05-09 William T Smith Standby circuit using a two filament incandescent lamp to maintain approximately thesame light output

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795830A (en) * 1972-08-17 1974-03-05 Shelton J Led slidebase switchboard lamp
US4458179A (en) * 1982-03-26 1984-07-03 American Sterilizer Company Controller for lamp having more than one light source
US4841196A (en) * 1987-12-09 1989-06-20 Gte Products Corporation Two-filament lamp and operating circuit and method for designing same
US5331734A (en) * 1990-03-12 1994-07-26 Hunt Arthur R Method for installing an electrical device having pins into pin sockets
US20040090190A1 (en) * 2001-05-03 2004-05-13 Alan Shields Lamp with multiple light-producing elements
US6882119B2 (en) 2001-05-03 2005-04-19 Alan Shields Lamp with multiple light-producing elements

Also Published As

Publication number Publication date
FR2111276A5 (enrdf_load_stackoverflow) 1972-06-02
IT940955B (it) 1973-02-20
CA950538A (en) 1974-07-02
DE2149686B2 (enrdf_load_stackoverflow) 1974-06-06
GB1329667A (en) 1973-09-12
DE2149686A1 (de) 1972-08-31
DE2149686C3 (de) 1975-01-23

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AS Assignment

Owner name: STUDEBAKER-WORTHINGTON, INC., ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WAGNER ELECTRIC CORPORATION;REEL/FRAME:003984/0757

Effective date: 19801229

AS Assignment

Owner name: COOPER INDUSTRIES, INC., 1001 FANNIN, HOUSTON, TEX

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:EDISON INTERNATIONAL, INC., A CORP. OF DE.;REEL/FRAME:004475/0382

Effective date: 19851031