JPS5279758A - Electronic gun - Google Patents

Electronic gun

Info

Publication number
JPS5279758A
JPS5279758A JP15507175A JP15507175A JPS5279758A JP S5279758 A JPS5279758 A JP S5279758A JP 15507175 A JP15507175 A JP 15507175A JP 15507175 A JP15507175 A JP 15507175A JP S5279758 A JPS5279758 A JP S5279758A
Authority
JP
Japan
Prior art keywords
electronic gun
filament
gun
stabilized
vicinity
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.)
Pending
Application number
JP15507175A
Other languages
Japanese (ja)
Inventor
Yoshihisa Namikawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15507175A priority Critical patent/JPS5279758A/en
Publication of JPS5279758A publication Critical patent/JPS5279758A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electron Sources, Ion Sources (AREA)

Abstract

PURPOSE: Heat from the filament of the electron gun is released to the outside through an insulating gas to eliminate temperature rise except in the vicinity of the filament, so that a stabilized and long-life electronic gun can be obtained.
COPYRIGHT: (C)1977,JPO&Japio
JP15507175A 1975-12-26 1975-12-26 Electronic gun Pending JPS5279758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15507175A JPS5279758A (en) 1975-12-26 1975-12-26 Electronic gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15507175A JPS5279758A (en) 1975-12-26 1975-12-26 Electronic gun

Publications (1)

Publication Number Publication Date
JPS5279758A true JPS5279758A (en) 1977-07-05

Family

ID=15598010

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15507175A Pending JPS5279758A (en) 1975-12-26 1975-12-26 Electronic gun

Country Status (1)

Country Link
JP (1) JPS5279758A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8474094B2 (en) 2009-04-14 2013-07-02 Dyson Technology Limited Cleaner head
US8555462B2 (en) 2009-04-14 2013-10-15 Dyson Technology Limited Cleaner head
US8707514B2 (en) 2009-04-14 2014-04-29 Dyson Technology Limited Cleaner head
GB2524324B (en) * 2014-03-21 2016-07-13 Dyson Technology Ltd A surface treating head

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8474094B2 (en) 2009-04-14 2013-07-02 Dyson Technology Limited Cleaner head
US8555462B2 (en) 2009-04-14 2013-10-15 Dyson Technology Limited Cleaner head
US8707514B2 (en) 2009-04-14 2014-04-29 Dyson Technology Limited Cleaner head
GB2524324B (en) * 2014-03-21 2016-07-13 Dyson Technology Ltd A surface treating head
US9451856B2 (en) 2014-03-21 2016-09-27 Dyson Technology Limited Surface treating head

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