GB1479951A - Apparatus for reshaping tubular envelopes - Google Patents

Apparatus for reshaping tubular envelopes

Info

Publication number
GB1479951A
GB1479951A GB32452/74A GB3245274A GB1479951A GB 1479951 A GB1479951 A GB 1479951A GB 32452/74 A GB32452/74 A GB 32452/74A GB 3245274 A GB3245274 A GB 3245274A GB 1479951 A GB1479951 A GB 1479951A
Authority
GB
United Kingdom
Prior art keywords
tubes
bending
reshaping
thinner sections
tubular envelopes
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
GB32452/74A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electronics Corp
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 Matsushita Electronics Corp filed Critical Matsushita Electronics Corp
Publication of GB1479951A publication Critical patent/GB1479951A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/04—Re-forming tubes or rods
    • C03B23/06—Re-forming tubes or rods by bending
    • C03B23/065—Re-forming tubes or rods by bending in only one plane, e.g. for making circular neon tubes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

1479951 Apparatus for bending tubes MATSUSHITA ELECTRONICS CORP 23 July 1974 [2 Aug 1973] 32452/74 Heading ClM An apparatus for bending two rectilinear tubular elongate fluorescent tube envelopes into annular form comprises two pulley shaped mould assemblies each of which is asymmetrically divided into two parts at right angles to the axes of the moulds by planes which place the two thinner sections opposing each other in the retaining structure thereof, the distance between the two thinner sections being only sufficient for opening the mould to allow for removal of the tubes.
GB32452/74A 1973-08-02 1974-07-23 Apparatus for reshaping tubular envelopes Expired GB1479951A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48087392A JPS5218513B2 (en) 1973-08-02 1973-08-02

Publications (1)

Publication Number Publication Date
GB1479951A true GB1479951A (en) 1977-07-13

Family

ID=13913601

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32452/74A Expired GB1479951A (en) 1973-08-02 1974-07-23 Apparatus for reshaping tubular envelopes

Country Status (8)

Country Link
US (1) US3920434A (en)
JP (1) JPS5218513B2 (en)
CA (1) CA1022341A (en)
DE (1) DE2436933C3 (en)
FR (1) FR2239758B1 (en)
GB (1) GB1479951A (en)
IT (1) IT1017841B (en)
NL (1) NL157579B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5289283A (en) * 1976-01-20 1977-07-26 Matsushita Electronics Corp Process and apparatus for manufacturing fluorescent lamps
JPS5675230U (en) * 1979-11-16 1981-06-19
US5041152A (en) * 1987-03-26 1991-08-20 Kabushiki Kaisha Toshiba Apparatus for bending tubular glass
JPH03117020U (en) * 1990-03-13 1991-12-04

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE478391A (en) * 1945-01-26
US2611216A (en) * 1949-03-25 1952-09-23 Cons Electric Lamp Company Method of and machine for making circular fluorescent lamps
US3215518A (en) * 1960-07-16 1965-11-02 Philips Corp Device for bending a straight tube into a circular shape

Also Published As

Publication number Publication date
FR2239758A1 (en) 1975-02-28
DE2436933C3 (en) 1979-05-03
CA1022341A (en) 1977-12-13
US3920434A (en) 1975-11-18
NL7410380A (en) 1975-02-04
JPS5218513B2 (en) 1977-05-21
DE2436933B2 (en) 1978-08-31
JPS5035968A (en) 1975-04-04
NL157579B (en) 1978-08-15
DE2436933A1 (en) 1975-02-20
IT1017841B (en) 1977-08-10
FR2239758B1 (en) 1976-10-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930723