FR870305A - Perfectionnements aux lampes éclair - Google Patents
Perfectionnements aux lampes éclairInfo
- Publication number
- FR870305A FR870305A FR870305DA FR870305A FR 870305 A FR870305 A FR 870305A FR 870305D A FR870305D A FR 870305DA FR 870305 A FR870305 A FR 870305A
- Authority
- FR
- France
- Prior art keywords
- flashlight
- flashlight improvements
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K5/00—Light sources using charges of combustible material, e.g. illuminating flash devices
- F21K5/02—Light sources using charges of combustible material, e.g. illuminating flash devices ignited in a non-disrupting container, e.g. photo-flash bulb
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/20—Seals between parts of vessels
- H01J5/22—Vacuum-tight joints between parts of vessel
- H01J5/24—Vacuum-tight joints between parts of vessel between insulating parts of vessel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
- H01J2893/0037—Solid sealing members other than lamp bases
- H01J2893/0038—Direct connection between two insulating elements, in particular via glass material
- H01J2893/0039—Glass-to-glass connection, e.g. by soldering
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US870305XA | 1940-02-26 | 1940-02-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR870305A true FR870305A (fr) | 1942-03-09 |
Family
ID=22202676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR870305D Expired FR870305A (fr) | 1940-02-26 | 1941-02-26 | Perfectionnements aux lampes éclair |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR870305A (fr) |
-
1941
- 1941-02-26 FR FR870305D patent/FR870305A/fr not_active Expired
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