DE813278C - Elektrische Gluehlampe mit einem teilweise in Form eines Umdrehungsellipsoids und teilweise in Form einer Kugel gestalteten Kolben - Google Patents

Elektrische Gluehlampe mit einem teilweise in Form eines Umdrehungsellipsoids und teilweise in Form einer Kugel gestalteten Kolben

Info

Publication number
DE813278C
DE813278C DEP34976D DEP0034976D DE813278C DE 813278 C DE813278 C DE 813278C DE P34976 D DEP34976 D DE P34976D DE P0034976 D DEP0034976 D DE P0034976D DE 813278 C DE813278 C DE 813278C
Authority
DE
Germany
Prior art keywords
shape
partially
incandescent lamp
ellipsoid
revolution
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
DEP34976D
Other languages
German (de)
English (en)
Inventor
Gerardus Hermanus Gerritsma
Henricus Verbeek
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 DE813278C publication Critical patent/DE813278C/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
    • H01K1/325—Reflecting coating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/40—Leading-in conductors

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
DEP34976D 1948-03-05 1949-02-24 Elektrische Gluehlampe mit einem teilweise in Form eines Umdrehungsellipsoids und teilweise in Form einer Kugel gestalteten Kolben Expired DE813278C (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL270680X 1948-03-05

Publications (1)

Publication Number Publication Date
DE813278C true DE813278C (de) 1951-09-10

Family

ID=19781918

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP34976D Expired DE813278C (de) 1948-03-05 1949-02-24 Elektrische Gluehlampe mit einem teilweise in Form eines Umdrehungsellipsoids und teilweise in Form einer Kugel gestalteten Kolben

Country Status (7)

Country Link
US (1) US2488751A (en:Method)
BE (1) BE487695A (en:Method)
CH (1) CH270680A (en:Method)
DE (1) DE813278C (en:Method)
FR (1) FR982309A (en:Method)
GB (1) GB657243A (en:Method)
NL (1) NL69920C (en:Method)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1236435B (de) * 1961-04-18 1967-03-16 Ass Elect Ind Elektrische, als Scheinwerfer ausgebildete Gluehlampe

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561033A (en) * 1950-12-02 1951-07-17 Odds Charles Headlight
US2692347A (en) * 1951-03-28 1954-10-19 Westinghouse Electric Corp Metalized stems for low-pressure discharge tubes
US2859368A (en) * 1951-10-20 1958-11-04 Sylvania Electric Prod Heat lamp
IT500078A (en:Method) * 1952-03-04
US2843778A (en) * 1952-12-22 1958-07-15 Gen Motors Corp Light bulb
US2818521A (en) * 1954-01-14 1957-12-31 Scarborough Associates Inc Lamp
US2766394A (en) * 1955-02-18 1956-10-09 Darsie George Headlight
NL127036C (en:Method) * 1959-06-02 1900-01-01
GB904469A (en) * 1960-02-11 1962-08-29 Thorn Electrical Ind Ltd Improvements in and relating to projection lamps
US4227113A (en) * 1978-10-18 1980-10-07 Duro-Test Corporation Incandescent electric lamp with partial light transmitting coating
US5677983A (en) * 1995-01-11 1997-10-14 Nauchno-Proizvodstvennaya Firma "Adonis" Light beam heater with light source and reflector having two ellipsoidal sections and a truncated spherical surface there between

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1236435B (de) * 1961-04-18 1967-03-16 Ass Elect Ind Elektrische, als Scheinwerfer ausgebildete Gluehlampe

Also Published As

Publication number Publication date
CH270680A (de) 1950-09-15
FR982309A (fr) 1951-06-08
BE487695A (en:Method)
GB657243A (en) 1951-09-12
US2488751A (en) 1949-11-22
NL69920C (en:Method)

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