EP0054401A3 - Electric light source with integral switch - Google Patents

Electric light source with integral switch Download PDF

Info

Publication number
EP0054401A3
EP0054401A3 EP81305793A EP81305793A EP0054401A3 EP 0054401 A3 EP0054401 A3 EP 0054401A3 EP 81305793 A EP81305793 A EP 81305793A EP 81305793 A EP81305793 A EP 81305793A EP 0054401 A3 EP0054401 A3 EP 0054401A3
Authority
EP
European Patent Office
Prior art keywords
lamp
light source
envelope
mercury switch
electric light
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.)
Withdrawn
Application number
EP81305793A
Other languages
German (de)
French (fr)
Other versions
EP0054401A2 (en
Inventor
Keith Elphinstone
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.)
Badalex Ltd
Original Assignee
Badalex Ltd
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 Badalex Ltd filed Critical Badalex Ltd
Publication of EP0054401A2 publication Critical patent/EP0054401A2/en
Publication of EP0054401A3 publication Critical patent/EP0054401A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/62—One or more circuit elements structurally associated with the lamp
    • H01K1/64—One or more circuit elements structurally associated with the lamp with built-in switch

Landscapes

  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

An electric lamp (30) incorporates an integral mercury switch (37) with the lamp structure to provide an attitude-­ sensitive light source. The mercury switch may be incorpo­ rated within the lamp envelope, either with the filament or in a separate compartment of the envelope, within a specially extended portion of an exhaust tube, or within a cap structure sealed to the light source envelope. The mercury switch is either specially fabricated during formation of the lamp structure, or may comprise a preformed capsule. The unit may be fitted in conventional screw bayonet and other sockets in the same manner as a corresponding ordinary lamp.
EP81305793A 1980-12-15 1981-12-08 Electric light source with integral switch Withdrawn EP0054401A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8040117 1980-12-15
GB8040117 1980-12-15
GB8105847 1981-02-24
GB8105847 1981-02-24

Publications (2)

Publication Number Publication Date
EP0054401A2 EP0054401A2 (en) 1982-06-23
EP0054401A3 true EP0054401A3 (en) 1983-01-19

Family

ID=26277854

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81305793A Withdrawn EP0054401A3 (en) 1980-12-15 1981-12-08 Electric light source with integral switch

Country Status (1)

Country Link
EP (1) EP0054401A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2252816A (en) * 1991-02-13 1992-08-19 Howard George Anthony Thomas Indicator lamps
DE9411753U1 (en) * 1994-07-20 1994-09-22 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Lamp circuit unit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US339253A (en) * 1886-04-06 aexold
US2086192A (en) * 1935-04-04 1937-07-06 William L Schumaker Electric light bulb
US2561460A (en) * 1950-11-14 1951-07-24 Bloese Max Electric light bulb
FR1518839A (en) * 1967-02-13 1968-03-29 Electric lamp with switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US339253A (en) * 1886-04-06 aexold
US2086192A (en) * 1935-04-04 1937-07-06 William L Schumaker Electric light bulb
US2561460A (en) * 1950-11-14 1951-07-24 Bloese Max Electric light bulb
FR1518839A (en) * 1967-02-13 1968-03-29 Electric lamp with switch

Also Published As

Publication number Publication date
EP0054401A2 (en) 1982-06-23

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

PUAL Search report despatched

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19831229

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ELPHINSTONE, KEITH