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ES365929A1 - Method of providing an anti-implosion clamping band around the envelope of a picture tube - Google Patents

Method of providing an anti-implosion clamping band around the envelope of a picture tube

Info

Publication number
ES365929A1
ES365929A1 ES365929A ES365929A ES365929A1 ES 365929 A1 ES365929 A1 ES 365929A1 ES 365929 A ES365929 A ES 365929A ES 365929 A ES365929 A ES 365929A ES 365929 A1 ES365929 A1 ES 365929A1
Authority
ES
Spain
Prior art keywords
band
faceplate
implosion
tube
envelope
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
ES365929A
Other languages
Spanish (es)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES365929A1 publication Critical patent/ES365929A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/87—Arrangements for preventing or limiting effects of implosion of vessels or containers

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

A steel anti-implosion clamping band 7 which is initially smaller than the cathode-ray tube faceplate 1 it is to surround, is applied to the tube by first coating the tube with thermal insulation, then heating the band 7 so that it will slide into position, preferably with one edge against a mould match line 17, and then allowing the band to cool and shrink into place. The temperature to which the band is heated may be 450 C. and should be such that on shrinkage the band is tensioned to its yield point in spite of the tolerances in dimensions of the band and of the faceplate. When the band is entirely on the cone side of the mould match line a tensile force of 500-700 Kgm is required, and this may be obtained by reinforcing the band with a separate band 8, or by folding over the edge of the band either outwards or inwards (Figs. 3 and 4, not shown) possibly with a reinforcing band arranged in the fold (Figs. 5 and 6, not shown). The material 6 may be polyvinyl acetate or epoxy resin, and the space at the rear of the band may be filled with adhesive 18 such as epoxy resin, urea or sulphur, which should not extend over the seal 3 between the cone 2 and the faceplate 1.
ES365929A 1968-04-13 1969-04-11 Method of providing an anti-implosion clamping band around the envelope of a picture tube Expired ES365929A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL686805299A NL154864B (en) 1968-04-13 1968-04-13 METHOD OF FIXING AN IMPLOSION PROTECTION TAPE ON THE BALLOON OF A TELEVISION PICTURE TUBE AND A TELEVISION PICTURE TUBE MANUFACTURED BY THIS METHOD.

Publications (1)

Publication Number Publication Date
ES365929A1 true ES365929A1 (en) 1971-03-16

Family

ID=19803335

Family Applications (1)

Application Number Title Priority Date Filing Date
ES365929A Expired ES365929A1 (en) 1968-04-13 1969-04-11 Method of providing an anti-implosion clamping band around the envelope of a picture tube

Country Status (9)

Country Link
US (1) US3708369A (en)
AT (1) AT284217B (en)
BE (1) BE731439A (en)
CH (1) CH489898A (en)
DE (1) DE1913566C3 (en)
ES (1) ES365929A1 (en)
FR (1) FR2006186A1 (en)
GB (1) GB1204109A (en)
NL (1) NL154864B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2173782B1 (en) * 1972-03-02 1974-08-02 Orega Cifte
US3845530A (en) * 1972-10-10 1974-11-05 Rca Corp Method for rendering cathode-ray tube more resistant to implosion and product thereof
NL163365C (en) * 1973-02-12 1980-08-15 Philips Nv CATHODE JET TUBE WITH IMPLOSION PROTECTION.
US5216513A (en) * 1991-07-31 1993-06-01 Thomson Consumer Electronics, Inc. Cathode-ray tube having a shrinkfit implosion protection band with faceplate panel compensating means

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785820A (en) * 1952-06-28 1957-03-19 Owens Illinois Glass Co Controlling implosions in cathode ray and other tubes
GB966206A (en) * 1961-11-10 1964-08-06 Cie Ind Francaise Tubes Elect Improvements in or relating to anti-implosion devices for cathode ray tubes
US3350154A (en) * 1964-12-18 1967-10-31 Owens Illinois Inc Reinforced cathode-ray tube and face plate therefor
DE1280424B (en) * 1965-11-01 1968-10-17 Standard Elektrik Lorenz Ag Process for sheathing picture tubes with an implosion protection frame and device for carrying out the process

Also Published As

Publication number Publication date
GB1204109A (en) 1970-09-03
CH489898A (en) 1970-04-30
DE1913566A1 (en) 1969-10-30
NL154864B (en) 1977-10-17
US3708369A (en) 1973-01-02
DE1913566C3 (en) 1985-08-01
NL6805299A (en) 1969-10-15
BE731439A (en) 1969-10-13
AT284217B (en) 1970-09-10
FR2006186A1 (en) 1969-12-19
DE1913566B2 (en) 1978-09-14

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19890221