GB575975A - Improvements in or relating to dust-proof electric lighting installations - Google Patents
Improvements in or relating to dust-proof electric lighting installationsInfo
- Publication number
- GB575975A GB575975A GB756644A GB756644A GB575975A GB 575975 A GB575975 A GB 575975A GB 756644 A GB756644 A GB 756644A GB 756644 A GB756644 A GB 756644A GB 575975 A GB575975 A GB 575975A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dust
- relating
- proof electric
- electric lighting
- lighting installations
- 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
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V31/00—Gas-tight or water-tight arrangements
- F21V31/005—Sealing arrangements therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
575,975. Junction boxes. GENERAL ELECTRIC CO., Ltd., and PEIRCE, M. W. April 24, 1944, No. 7566. [Class 38 (i)] [Also in Group XI] The globe 2 of an electric light fitting communicates with the atmosphere only through a perforated casing 7 containing filtering material and connected to the conduit 4 containing conductors supplying the lamp or to a junction box 5 or T-piece on the conduit, the entrance of dust into the globe being thereby prevented. The perforated portion of the casing 7 maybe formed bya removable lid 10.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB756644A GB575975A (en) | 1944-04-24 | 1944-04-24 | Improvements in or relating to dust-proof electric lighting installations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB756644A GB575975A (en) | 1944-04-24 | 1944-04-24 | Improvements in or relating to dust-proof electric lighting installations |
Publications (1)
Publication Number | Publication Date |
---|---|
GB575975A true GB575975A (en) | 1946-03-13 |
Family
ID=9835576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB756644A Expired GB575975A (en) | 1944-04-24 | 1944-04-24 | Improvements in or relating to dust-proof electric lighting installations |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB575975A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4937717A (en) * | 1988-06-09 | 1990-06-26 | Betzvog Jr John M | Lighting system for hazardous areas |
-
1944
- 1944-04-24 GB GB756644A patent/GB575975A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4937717A (en) * | 1988-06-09 | 1990-06-26 | Betzvog Jr John M | Lighting system for hazardous areas |
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