GB428925A - Improvements in electric discharge tubes - Google Patents

Improvements in electric discharge tubes

Info

Publication number
GB428925A
GB428925A GB2792/35A GB279235A GB428925A GB 428925 A GB428925 A GB 428925A GB 2792/35 A GB2792/35 A GB 2792/35A GB 279235 A GB279235 A GB 279235A GB 428925 A GB428925 A GB 428925A
Authority
GB
United Kingdom
Prior art keywords
electric discharge
flanges
discharge tubes
cylinders
tube
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
Application number
GB2792/35A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Publication of GB428925A publication Critical patent/GB428925A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers

Abstract

428,925. Discharge apparatus. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen ; 11, Ehrenbergstrasse, Berlin) Jan. 28, 1935, No. 2792. Convention date, March 9, 1934. [Class 39 (i)] [See also Group XIII] An electric discharge tube such as a lamp 1. with thermionic electrodes 2 is provided with a heat-retaining envelope which consists of three or more concentric cylinders 5 .. 7 sealed together at alternate ends and rigidly clamped between flanges 9 on sleeves 8 screwing on to the caps 3 of the tube. The cylinders 5.. 7 are of glass separated from the flanges 9 by asbestos washers 10.
GB2792/35A 1934-03-09 1935-01-28 Improvements in electric discharge tubes Expired GB428925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE428925X 1934-03-09

Publications (1)

Publication Number Publication Date
GB428925A true GB428925A (en) 1935-05-21

Family

ID=6477529

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2792/35A Expired GB428925A (en) 1934-03-09 1935-01-28 Improvements in electric discharge tubes

Country Status (2)

Country Link
US (1) US2135696A (en)
GB (1) GB428925A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2694774A (en) * 1950-04-19 1954-11-16 Hanovia Chemical & Mfg Co End fitting for vapor arc lamps

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3129329A1 (en) * 1981-07-24 1983-02-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München SODIUM STEAM HIGH PRESSURE DISCHARGE LAMP
US5536998A (en) * 1994-11-28 1996-07-16 Royal Lite Manufacturing And Supply Corp. Fluorescent lamp with a protective assembly
US5729085A (en) * 1996-03-22 1998-03-17 Royal Lite Manufacturing And Supply Corp. Fluorescent lamp with a protective assembly
US6078136A (en) 1998-11-06 2000-06-20 Royal Lite Manufacturing And Supply Corp. Fluorescent lamp with a protective assembly having vent holes
US6254318B1 (en) 1998-12-16 2001-07-03 Michael F. Sica Apparatus for making numerous holes in a tube
US6246167B1 (en) 1999-06-29 2001-06-12 Michael F. Sica U-shaped fluorescent lamp with protective assembly
SE0302595D0 (en) * 2003-09-30 2003-09-30 Auralight Int Ab Fluorescent lamps adapted for cold spaces
US20060034087A1 (en) * 2004-08-16 2006-02-16 A.L.P. Lighting & Ceiling Products, Inc. End cap for illumination tube guards
JP2009524903A (en) * 2006-01-25 2009-07-02 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ TLD low pressure gas discharge lamp
US8288949B2 (en) * 2009-04-29 2012-10-16 General Electric Company Fluorescent lamp with protective sleeve
US8053962B2 (en) * 2009-05-04 2011-11-08 General Electric Company Fluorescent lamp with UV-blocking layer and protective sleeve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2694774A (en) * 1950-04-19 1954-11-16 Hanovia Chemical & Mfg Co End fitting for vapor arc lamps

Also Published As

Publication number Publication date
US2135696A (en) 1938-11-08

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