GB775610A - Improvements in envelope structures for electric discharge devices - Google Patents

Improvements in envelope structures for electric discharge devices

Info

Publication number
GB775610A
GB775610A GB8012/55A GB801255A GB775610A GB 775610 A GB775610 A GB 775610A GB 8012/55 A GB8012/55 A GB 8012/55A GB 801255 A GB801255 A GB 801255A GB 775610 A GB775610 A GB 775610A
Authority
GB
United Kingdom
Prior art keywords
anode
insulator
ceramic
march
sealed
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
GB8012/55A
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
Original Assignee
General Electric Co
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 filed Critical General Electric Co
Publication of GB775610A publication Critical patent/GB775610A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/20—Seals between parts of vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
    • H01J2893/0037—Solid sealing members other than lamp bases

Landscapes

  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Abstract

775,610. Thermionic valves. GENERAL ELECTRIC CO. March 18, 1955 [March 19, 1954], No. 8012/55. Class 39(1). An anode 5 fitting in an outer anode member 5a is sealed to a ceramic insulator 3 via a sleeve 18, which is sealed to the anode at 20 and to the insulator at 19, so that differences in expansion of anode and insulator are absorbed by the sleeve. This also serves as the anode terminal, and therefore in order to reduce radio-frequency losses, a more direct path is provided between the anode and the terminal by a member 23, 24. A reentrant portion 28 of this protects the ceramic-tometal seal against direct heat radiation from hot electrodes. Slots 29 allow the member to take up unequal expansion stresses more freely. A space 21 also helps to reduce direct heating of the seal from the anode. The ceramic insulator 3 has a series of grooves on its inner surface, to prevent a continuous coating of metal forming thereon by evaporation from hot electrodes. The invention is shown as applied to a h.f. transmitter of the tetrode type, of which the anode is fluid-cooled, one conduit .8 being shown. Specification 656,724 [Group XXXVI] is referred to.
GB8012/55A 1954-03-19 1955-03-18 Improvements in envelope structures for electric discharge devices Expired GB775610A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US775610XA 1954-03-19 1954-03-19

Publications (1)

Publication Number Publication Date
GB775610A true GB775610A (en) 1957-05-29

Family

ID=22138784

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8012/55A Expired GB775610A (en) 1954-03-19 1955-03-18 Improvements in envelope structures for electric discharge devices

Country Status (1)

Country Link
GB (1) GB775610A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2985953A (en) * 1957-12-13 1961-05-30 Rolls Royce Manufacture of blades of internal combustion turbine engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2985953A (en) * 1957-12-13 1961-05-30 Rolls Royce Manufacture of blades of internal combustion turbine engines

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