EP0122045A3 - Incandescent lamps - Google Patents

Incandescent lamps Download PDF

Info

Publication number
EP0122045A3
EP0122045A3 EP84301593A EP84301593A EP0122045A3 EP 0122045 A3 EP0122045 A3 EP 0122045A3 EP 84301593 A EP84301593 A EP 84301593A EP 84301593 A EP84301593 A EP 84301593A EP 0122045 A3 EP0122045 A3 EP 0122045A3
Authority
EP
European Patent Office
Prior art keywords
bulb
filament
connections
horizontal position
support wires
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Withdrawn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
EP84301593A
Other languages
German (de)
French (fr)
Other versions
EP0122045A2 (en
Inventor
Sydney Alfred Richard Ridgen
Graham Warren Skeldon
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.)
Ledvance Ltd
Original Assignee
General Electric Co PLC
Osram GEC 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 General Electric Co PLC, Osram GEC Ltd filed Critical General Electric Co PLC
Publication of EP0122045A2 publication Critical patent/EP0122045A2/en
Publication of EP0122045A3 publication Critical patent/EP0122045A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/16—Electric connection thereto
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Conventional incandescent filament lamps have an even number of filament sections so that the connections of the fila­ ment to the support wires are both at the same end of the bulb. It is found that in the horizontal position such bulbs burn out very quickly compared to their lifetime in the vertical position. Hence a lamp is provided with an odd number of filament sec­ tions (5) with the connections to the support wires (6,7) being at opposite ends of the bulb. This significantly prolongs the life­ time of the bulb when in the horizontal position.
EP84301593A 1983-04-08 1984-03-09 Incandescent lamps Withdrawn EP0122045A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838309560A GB8309560D0 (en) 1983-04-08 1983-04-08 Incandescent lamps
GB8309560 1983-04-08

Publications (2)

Publication Number Publication Date
EP0122045A2 EP0122045A2 (en) 1984-10-17
EP0122045A3 true EP0122045A3 (en) 1985-10-23

Family

ID=10540809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84301593A Withdrawn EP0122045A3 (en) 1983-04-08 1984-03-09 Incandescent lamps

Country Status (2)

Country Link
EP (1) EP0122045A3 (en)
GB (2) GB8309560D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8414404D0 (en) * 1984-06-06 1984-07-11 Gen Electric Co Plc Incandescent lamps
US8459525B2 (en) 2008-02-14 2013-06-11 Ethicon Endo-Sugery, Inc. Motorized surgical cutting and fastening instrument having a magnetic drive train torque limiting device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2597681A (en) * 1950-07-01 1952-05-20 Gen Electric Electric incandescent lamp
US3621111A (en) * 1970-07-01 1971-11-16 Gen Electric Lead-in conductor for electrical devices

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2597681A (en) * 1950-07-01 1952-05-20 Gen Electric Electric incandescent lamp
US3621111A (en) * 1970-07-01 1971-11-16 Gen Electric Lead-in conductor for electrical devices

Also Published As

Publication number Publication date
EP0122045A2 (en) 1984-10-17
GB8309560D0 (en) 1983-05-11
GB8406273D0 (en) 1984-04-11

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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): DE NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): DE NL

17P Request for examination filed

Effective date: 19860120

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: OSRAM- GEC LIMITED

17Q First examination report despatched

Effective date: 19870504

D17Q First examination report despatched (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19880217

RIN1 Information on inventor provided before grant (corrected)

Inventor name: RIDGEN, SYDNEY ALFRED RICHARD

Inventor name: SKELDON, GRAHAM WARREN