FR835630A - Improvements in the manufacture of lamp filaments - Google Patents

Improvements in the manufacture of lamp filaments

Info

Publication number
FR835630A
FR835630A FR835630DA FR835630A FR 835630 A FR835630 A FR 835630A FR 835630D A FR835630D A FR 835630DA FR 835630 A FR835630 A FR 835630A
Authority
FR
France
Prior art keywords
manufacture
lamp filaments
filaments
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
Application number
Other languages
French (fr)
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.)
Compagnie des Lampes
Original Assignee
Compagnie des Lampes
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 Compagnie des Lampes filed Critical Compagnie des Lampes
Application granted granted Critical
Publication of FR835630A publication Critical patent/FR835630A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/02—Manufacture of incandescent bodies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4981—Utilizing transitory attached element or associated separate material

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wire Processing (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
FR835630D 1937-03-24 1938-03-23 Improvements in the manufacture of lamp filaments Expired FR835630A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US132763A US2142865A (en) 1937-03-24 1937-03-24 Method of manufacturing filaments

Publications (1)

Publication Number Publication Date
FR835630A true FR835630A (en) 1938-12-27

Family

ID=22455486

Family Applications (1)

Application Number Title Priority Date Filing Date
FR835630D Expired FR835630A (en) 1937-03-24 1938-03-23 Improvements in the manufacture of lamp filaments

Country Status (3)

Country Link
US (1) US2142865A (en)
FR (1) FR835630A (en)
GB (1) GB495749A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2457631A (en) * 1943-09-22 1948-12-28 Hamilton Watch Co Cylindrical hairspring form
US2515699A (en) * 1946-09-20 1950-07-18 Gen Electric Glow discharge lamp
US2495212A (en) * 1946-12-03 1950-01-24 Vries Abraham De Method and device for making biased spiral wound tension springs
US2572573A (en) * 1949-03-31 1951-10-23 Sylvania Electric Prod Method of inspecting electric lamp filaments
NL190055A (en) * 1953-08-24
US3048200A (en) * 1958-03-12 1962-08-07 Westinghouse Electric Corp Process of treating coiled articles
DE1166737B (en) * 1959-07-25 1964-04-02 Schmid & Wezel Process for the continuous production of flexible wire hollow, z. B. speedometer shafts
US3110098A (en) * 1960-11-25 1963-11-12 Sylvania Electric Prod Manufacture of wire coils
BE627771A (en) * 1962-02-05
US4316116A (en) * 1979-12-19 1982-02-16 General Electric Company Triple-coil incandescent filament
US4611146A (en) * 1981-12-31 1986-09-09 Raytheon Company Indirectly heated cathode
US4920624A (en) * 1988-12-07 1990-05-01 Texas Instruments Incorporated Method and apparatus for making a double helix thermostat metal spring
GB2260919B (en) * 1991-11-02 1994-03-09 Zortech Int Improvements in or relating to coil winding
EP0897592A1 (en) * 1997-01-15 1999-02-24 Koninklijke Philips Electronics N.V. Electric incandescent lamp with filament having angular cross section

Also Published As

Publication number Publication date
GB495749A (en) 1938-11-18
US2142865A (en) 1939-01-03

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