FR627899A - A method of making helical filaments of highly refractory metal wound in a helix and hardly sagging - Google Patents

A method of making helical filaments of highly refractory metal wound in a helix and hardly sagging

Info

Publication number
FR627899A
FR627899A FR627899DA FR627899A FR 627899 A FR627899 A FR 627899A FR 627899D A FR627899D A FR 627899DA FR 627899 A FR627899 A FR 627899A
Authority
FR
France
Prior art keywords
sagging
helix
hardly
refractory metal
helical filaments
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR627899A publication Critical patent/FR627899A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Resistance Heating (AREA)
FR627899D 1926-02-15 1927-01-22 A method of making helical filaments of highly refractory metal wound in a helix and hardly sagging Expired FR627899A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL627899X 1926-02-15

Publications (1)

Publication Number Publication Date
FR627899A true FR627899A (en) 1927-10-14

Family

ID=19788637

Family Applications (1)

Application Number Title Priority Date Filing Date
FR627899D Expired FR627899A (en) 1926-02-15 1927-01-22 A method of making helical filaments of highly refractory metal wound in a helix and hardly sagging

Country Status (3)

Country Link
DE (1) DE639070C (en)
FR (1) FR627899A (en)
NL (1) NL29342C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122176A (en) * 1958-10-27 1964-02-25 Philips Corp Method of manufacturing bodies consisting of helically wound wire

Also Published As

Publication number Publication date
NL29342C (en)
DE639070C (en) 1936-11-27

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