JPS5397285A - Method of evacuating air from electric bulb - Google Patents
Method of evacuating air from electric bulbInfo
- Publication number
- JPS5397285A JPS5397285A JP1150577A JP1150577A JPS5397285A JP S5397285 A JPS5397285 A JP S5397285A JP 1150577 A JP1150577 A JP 1150577A JP 1150577 A JP1150577 A JP 1150577A JP S5397285 A JPS5397285 A JP S5397285A
- Authority
- JP
- Japan
- Prior art keywords
- bulb
- filament
- evacuating air
- electric bulb
- heating
- 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.)
- Pending
Links
Abstract
PURPOSE: To provide a method of evacuating air from an electric bulb, comprising the step of removing oxides on the filament by heating the filament after filling of forming gas into the bulb, and the step of heating the filament to a higher temperature to promote clarification and degasification of bulk getter, bulb, etc., thus preventing contamination of the inner surface or other of bulb from being caused by evaporation of oxides on the surface of filament.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1150577A JPS5397285A (en) | 1977-02-04 | 1977-02-04 | Method of evacuating air from electric bulb |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1150577A JPS5397285A (en) | 1977-02-04 | 1977-02-04 | Method of evacuating air from electric bulb |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5397285A true JPS5397285A (en) | 1978-08-25 |
Family
ID=11779867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1150577A Pending JPS5397285A (en) | 1977-02-04 | 1977-02-04 | Method of evacuating air from electric bulb |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5397285A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5446979A (en) * | 1992-04-20 | 1995-09-05 | Hitachi Construction Machinery Co., Ltd. | Hydraulic circuit system for civil engineering and construction machines |
-
1977
- 1977-02-04 JP JP1150577A patent/JPS5397285A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5446979A (en) * | 1992-04-20 | 1995-09-05 | Hitachi Construction Machinery Co., Ltd. | Hydraulic circuit system for civil engineering and construction machines |
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