GB751537A - Improvements in or relating to electric incandescent lamps or discharge tubes - Google Patents
Improvements in or relating to electric incandescent lamps or discharge tubesInfo
- Publication number
- GB751537A GB751537A GB12608/54A GB1260854A GB751537A GB 751537 A GB751537 A GB 751537A GB 12608/54 A GB12608/54 A GB 12608/54A GB 1260854 A GB1260854 A GB 1260854A GB 751537 A GB751537 A GB 751537A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cap
- head
- groove
- edge
- relating
- 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
- H01K1/00—Details
- H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
- H01K1/46—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
751,537. Thermionic valves. PHILIPS ELECTRICAL INDUSTRIES, Ltd. April 30, 1954 [May 4, 1953], No. 12608/54. Class 39 (1). [Also in Group XI] In order to reduce the risk of breakage due to expansion of the glass at the " head " or end 2 of an electric lamp or.discharge tube which is embraced by a cap 3 cemented thereon, the part of the head just below the edge 5 of the cap is provided with a groove 6, and adjacent to the groove and further within the cap the head is formed with a portion 7 of increased diameter such that its periphery is adjacent to the inner wall of the cap, the cement 4 being applied only in the space between cap and head on that side of the widened portion remote from the filament. A resilient mass such as a rubber ring 9, Fig. 2 (not shown), may be provided within the groove 6. Preferably the part 8 of the bulb wall which abuts against the edge 5 of the cap is substantially transverse to that edge and supports the cap and ensures correct adjustment during capping.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL321689X | 1953-05-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB751537A true GB751537A (en) | 1956-06-27 |
Family
ID=19784010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12608/54A Expired GB751537A (en) | 1953-05-04 | 1954-04-30 | Improvements in or relating to electric incandescent lamps or discharge tubes |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2799421A (en) |
| BE (1) | BE527383A (en) |
| CH (1) | CH321689A (en) |
| DE (1) | DE934418C (en) |
| FR (1) | FR1100469A (en) |
| GB (1) | GB751537A (en) |
| NL (2) | NL178076B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5960962A (en) * | 1982-09-30 | 1984-04-07 | 株式会社東芝 | Tubular bulb |
| NL8400409A (en) * | 1984-02-09 | 1985-09-02 | Philips Nv | ELECTLESS LOW PRESSURE GAS DISCHARGE LAMP. |
| US4881601A (en) * | 1988-05-18 | 1989-11-21 | Smith Wayne D | Apparatus for deployment of aerial-drop units |
| WO2006104553A1 (en) * | 2005-03-25 | 2006-10-05 | Five Star Import Group L.L.C. | Led light bulb |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US530895A (en) * | 1894-12-11 | Incandescent electric lamp | ||
| US599002A (en) * | 1898-02-15 | Incandescent lamp | ||
| US708653A (en) * | 1901-10-17 | 1902-09-09 | American Electric Company | Incandescent electric lamp. |
| US2028884A (en) * | 1934-06-21 | 1936-01-28 | Hygrade Sylvanis Corp | Lamp, tube, and similar devices |
-
0
- NL NL81612D patent/NL81612C/xx active
- BE BE527383D patent/BE527383A/xx unknown
- NL NLAANVRAGE7314914,A patent/NL178076B/en unknown
-
1954
- 1954-04-22 US US424943A patent/US2799421A/en not_active Expired - Lifetime
- 1954-04-30 GB GB12608/54A patent/GB751537A/en not_active Expired
- 1954-05-01 DE DEN8837A patent/DE934418C/en not_active Expired
- 1954-05-03 FR FR1100469D patent/FR1100469A/en not_active Expired
- 1954-05-03 CH CH321689D patent/CH321689A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL178076B (en) | |
| NL81612C (en) | |
| BE527383A (en) | |
| US2799421A (en) | 1957-07-16 |
| FR1100469A (en) | 1955-09-20 |
| CH321689A (en) | 1957-05-15 |
| DE934418C (en) | 1955-10-20 |
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