GB1437882A - Method of manufacturing incandescent filament lamps - Google Patents
Method of manufacturing incandescent filament lampsInfo
- Publication number
- GB1437882A GB1437882A GB1513074A GB1513074A GB1437882A GB 1437882 A GB1437882 A GB 1437882A GB 1513074 A GB1513074 A GB 1513074A GB 1513074 A GB1513074 A GB 1513074A GB 1437882 A GB1437882 A GB 1437882A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filament
- sealing
- april
- limbs
- manufacturing
- 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
- H01K3/20—Sealing-in wires directly into the envelope
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/38—Seals for leading-in conductors
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Joining Of Glass To Other Materials (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
1437882 Electric incandescent lamps FABRIQUES REUNIES DE LAMPES ELECTRIQUES 5 April 1974 [9 April 1973] 15130/74 Heading H1F A method of manufacturing an incandescent lamp having a tungsten filament comprises the step of flattening and pinch-sealing one end of a borosilicate glass tube constituting the lamp envelope directly on to the limbs of the filament. The filament is supported in position during the sealing operation by a hairpinshaped wire of nickel or copper the ends of which are fixed to the filament limbs. After sealing, the curved portion of the hairpin is cut and removed, the remaining portions constituting the current supply wires.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7312669A FR2224874B1 (en) | 1973-04-09 | 1973-04-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1437882A true GB1437882A (en) | 1976-06-03 |
Family
ID=9117615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1513074A Expired GB1437882A (en) | 1973-04-09 | 1974-04-05 | Method of manufacturing incandescent filament lamps |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5030917A (en) |
BE (1) | BE813442A (en) |
DE (1) | DE2417139A1 (en) |
FR (1) | FR2224874B1 (en) |
GB (1) | GB1437882A (en) |
NL (1) | NL7404735A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4354137A (en) * | 1980-07-15 | 1982-10-12 | Westinghouse Electric Corp. | Incandescent lamp having seal-anchored filament mount, and method of making such lamp |
-
1973
- 1973-04-09 FR FR7312669A patent/FR2224874B1/fr not_active Expired
-
1974
- 1974-04-05 GB GB1513074A patent/GB1437882A/en not_active Expired
- 1974-04-06 JP JP3848974A patent/JPS5030917A/ja active Pending
- 1974-04-08 NL NL7404735A patent/NL7404735A/xx unknown
- 1974-04-08 BE BE142966A patent/BE813442A/en unknown
- 1974-04-09 DE DE19742417139 patent/DE2417139A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
NL7404735A (en) | 1974-10-11 |
BE813442A (en) | 1974-10-08 |
FR2224874A1 (en) | 1974-10-31 |
FR2224874B1 (en) | 1975-12-26 |
JPS5030917A (en) | 1975-03-27 |
DE2417139A1 (en) | 1974-11-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |