GB624090A - Improvements in or relating to closed vessels such as electric discharge tubes or incandescent lamps - Google Patents
Improvements in or relating to closed vessels such as electric discharge tubes or incandescent lampsInfo
- Publication number
- GB624090A GB624090A GB19380/46A GB1938046A GB624090A GB 624090 A GB624090 A GB 624090A GB 19380/46 A GB19380/46 A GB 19380/46A GB 1938046 A GB1938046 A GB 1938046A GB 624090 A GB624090 A GB 624090A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electric discharge
- relating
- mins
- incandescent lamps
- discharge tubes
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
- C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
624,090. Glass-to-metal seals. PHILIPS LAMPS, Ltd. June 28, 1946, No. 19380. Convention date, May 20, 1942. [Class 36] [Also in Groups XXIII and XL (a)] Glass and metal members are hermetically secured together by means of a layer of glaze having a cellular but vacuum-tight structure. The coefficient of expansion of the sealing material is preferably of the same order as that of the parts to be joined. Low melting-point material such as described in Specification 2465/46 (as open to inspection under Sect. 91) may be used, the cellular structure being obtained by limiting the temperature or the time of sealing; e.g. a 0.2 mm. layer in powder form mixed with water may be applied to the foot of an electric discharge tube or incandescent lamp which is then heated to not more than 580‹ C. for 2 mins.; the bulb is subsequently positioned and sealed on by heating to 480‹ C. for 2-3 mins.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL624090X | 1942-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB624090A true GB624090A (en) | 1949-05-27 |
Family
ID=19788518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19380/46A Expired GB624090A (en) | 1942-05-20 | 1946-06-28 | Improvements in or relating to closed vessels such as electric discharge tubes or incandescent lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB624090A (en) |
-
1946
- 1946-06-28 GB GB19380/46A patent/GB624090A/en not_active Expired
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