GB670241A - Improvements in and relating to electric discharge tubes - Google Patents

Improvements in and relating to electric discharge tubes

Info

Publication number
GB670241A
GB670241A GB14498/48A GB1449848A GB670241A GB 670241 A GB670241 A GB 670241A GB 14498/48 A GB14498/48 A GB 14498/48A GB 1449848 A GB1449848 A GB 1449848A GB 670241 A GB670241 A GB 670241A
Authority
GB
United Kingdom
Prior art keywords
glass
nickel
specified
iron
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
Application number
GB14498/48A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB670241A publication Critical patent/GB670241A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/16—Vessels; Containers; Shields associated therewith

Landscapes

  • Glass Compositions (AREA)

Abstract

670,241. Glass compositions. BRITISH THOMSON-HOUSTON CO., Ltd. May 28, 1948 [May 29, 1947], No. 14498/48. Drawings to Specification. Class 56. [Also in Group XL (a)] A glass consists of specified proportions of silica (SiO 2 ) and boric oxide (B,O,), together with the oxides of sodium (Na 2 O), aluminium (Al 2 O 3 ), iron (Fe 2 0 3 ), cerium (CeO), and also preferably antimony (Sb 2 O 3 ). It is stated that this glass possesses a combination of physical properties rendering it especially suitable for X-ray tube envelopes, said properties being dielectric strength and dielectric constant, resistivity, X-ray transmissivity, annealing and softening temperatures, strain point and power factor, all of specified values. In addition, the glass has a low discoloration rate, and a coefficient of expansion such that it readily seals to nickel-steel or nickel-iron-cobalt-manganese alloys of specified composition.
GB14498/48A 1947-05-29 1948-05-28 Improvements in and relating to electric discharge tubes Expired GB670241A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US751234A US2640167A (en) 1947-05-29 1947-05-29 Envelope for electron flow device and glass-metal seal embodied therein

Publications (1)

Publication Number Publication Date
GB670241A true GB670241A (en) 1952-04-16

Family

ID=25021086

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14498/48A Expired GB670241A (en) 1947-05-29 1948-05-28 Improvements in and relating to electric discharge tubes

Country Status (3)

Country Link
US (1) US2640167A (en)
FR (1) FR964669A (en)
GB (1) GB670241A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2836748A (en) * 1956-04-20 1958-05-27 Dunlee Corp Electron discharge device
US3022435A (en) * 1958-12-22 1962-02-20 Dunlee Corp Envelope for X-ray generator
US3227581A (en) * 1960-02-23 1966-01-04 Eitel Mccullough Inc Process for rendering ceramics slightly conductive
DE19621765A1 (en) * 1996-05-30 1997-07-31 Siemens Ag X ray tube with ceramic socket for medical applications and material investigations
FR2771849B1 (en) * 1997-12-01 2000-02-11 Ge Medical Syst Sa COLLAR DEVICE FOR SOLIDARIZING A GLASS PIECE AND A METAL PIECE
DE102004008559B9 (en) * 2004-02-18 2007-05-03 Schott Ag Use of a glass for glass-metal connections
FR2870930B1 (en) * 2004-05-28 2006-07-07 Buyer Mimeure Edouard De DEVICE FOR AUTHORIZING THE EXTRACTION OF ARROW POINT OR ARC ARROW FROM ITS RECEPTIVE SUPPORT
IT1390960B1 (en) * 2008-07-09 2011-10-27 Tvp Solar Sa SOLAR VACUUM THERMAL PANEL

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2172548A (en) * 1939-09-12 Shaped bodies for electric purposes
US1975880A (en) * 1932-11-01 1934-10-09 Westinghouse Lamp Co Electrical discharge apparatus
US2076012A (en) * 1933-11-01 1937-04-06 Westinghouse Electric & Mfg Co Envelope for an electric device
US2068801A (en) * 1935-07-30 1937-01-26 Corning Glass Works Borosilicate glass containing cerium
US2167431A (en) * 1936-08-14 1939-07-25 Hygrade Sylvania Corp Method of manufacturing cathode ray tubes
US2405477A (en) * 1942-08-26 1946-08-06 Gen Electric Ray-generating apparatus
US2564950A (en) * 1947-01-31 1951-08-21 Owens Illinois Glass Co Glass-to-metal seal and composition thereof

Also Published As

Publication number Publication date
FR964669A (en) 1950-08-22
US2640167A (en) 1953-05-26

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