JPS5359277A - Method of forming annular bulb - Google Patents

Method of forming annular bulb

Info

Publication number
JPS5359277A
JPS5359277A JP13498376A JP13498376A JPS5359277A JP S5359277 A JPS5359277 A JP S5359277A JP 13498376 A JP13498376 A JP 13498376A JP 13498376 A JP13498376 A JP 13498376A JP S5359277 A JPS5359277 A JP S5359277A
Authority
JP
Japan
Prior art keywords
forming annular
annular bulb
bulb
drum
rising
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
JP13498376A
Other languages
Japanese (ja)
Inventor
Akimasa Kondo
Noriyoshi Kikuchi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13498376A priority Critical patent/JPS5359277A/en
Publication of JPS5359277A publication Critical patent/JPS5359277A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

PURPOSE: To prevent excessive reduction of wall thickness at the ends of the bulb and also prevent generation of cracks by making the speed of rising of a drum greater than the peripheral speed of the drum at least during part of the rising stroke.
COPYRIGHT: (C)1978,JPO&Japio
JP13498376A 1976-11-10 1976-11-10 Method of forming annular bulb Pending JPS5359277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13498376A JPS5359277A (en) 1976-11-10 1976-11-10 Method of forming annular bulb

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13498376A JPS5359277A (en) 1976-11-10 1976-11-10 Method of forming annular bulb

Publications (1)

Publication Number Publication Date
JPS5359277A true JPS5359277A (en) 1978-05-27

Family

ID=15141170

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13498376A Pending JPS5359277A (en) 1976-11-10 1976-11-10 Method of forming annular bulb

Country Status (1)

Country Link
JP (1) JPS5359277A (en)

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