FR835630A - Improvements in the manufacture of lamp filaments - Google Patents
Improvements in the manufacture of lamp filamentsInfo
- 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
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)
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)
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 |
-
1937
- 1937-03-24 US US132763A patent/US2142865A/en not_active Expired - Lifetime
-
1938
- 1938-03-23 FR FR835630D patent/FR835630A/en not_active Expired
- 1938-03-24 GB GB9054/38A patent/GB495749A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB495749A (en) | 1938-11-18 |
US2142865A (en) | 1939-01-03 |
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