US3166211A - Glass cathode ray tube for reproducing images - Google Patents

Glass cathode ray tube for reproducing images Download PDF

Info

Publication number
US3166211A
US3166211A US143893A US14389361A US3166211A US 3166211 A US3166211 A US 3166211A US 143893 A US143893 A US 143893A US 14389361 A US14389361 A US 14389361A US 3166211 A US3166211 A US 3166211A
Authority
US
United States
Prior art keywords
glass
layer
ray tube
cone
synthetic resin
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 - Lifetime
Application number
US143893A
Other languages
English (en)
Inventor
Stel Marinus
Fennema Pieter Harm
Nienhuis Willem Fokko
Panis Constantias Jo Waltherus
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.)
US Philips Corp
North American Philips Co Inc
Original Assignee
US Philips 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 US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3166211A publication Critical patent/US3166211A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the invention relates to glass cathode ray tubes for reproducing images, more particularly to large-sized tubes, esspecially television display-tubes.
  • a protective sheet is arranged in front of the display screen in the cabinet of the receiver of which the cathode ray tube forms part.
  • this precaution does not effectively protect the persons having to assemble the receiver.
  • this coating contains fibrous material, at least in an area in which this coating covers the zone which adjoins the image area of the window and extends over part of the cone.
  • the glass may previously be covered with a separate intermediate layer consisting of a substance having a better adherence to the glass and to the fibre containing synthetic resin than this latter layer has to the glass, so that the intermediate layer acts as a glue.
  • the fibre-containing synthetic resin layer according to the invention preferably contains glass fibres, which are embedded in the synthetic resin preferably as short lengths of, for example, a few centimetres.
  • this layer is opaque, it obviously cannot be applied to the image area of the window. However, this has proved unnecessary, since the mere presence of such a layer on the zone outside the image area, in which tensile stresses may be produced in the glass, is sufiicient to provide the desired effect in the image area also.
  • Such a clear intermediate layer applied to the glass in order to improve the adherence may also be used in any known manner to obtain certain optical effects, e.g. the avoidance of light reflections of nearby light sources or increase of the contrast.
  • the fibre containing layer according to the invention may also be used in combination with means for strengthening the surface of the glass, e.g. the provision of a layer of glaze, as has already been suggested in prior applications.
  • image area is to be understood to mean the window portion used for display. This is generally defined by the luminescent layer applied to the inner surface, but frequently it is defined by a mask provided on the outer surface of the tube or in the cabinet and, in the case under consideration, may be constituted by the fibre containing layer.
  • FIGS. 1, 2 and 3 show various embodiments of cathode ray tubes in accordance with the invention.
  • a cone 1 of a cathode ray tube has fused to it a neck 2 and a window 3, to the inner surface of which a luminescent screen 8 is applied.
  • Tensile stresses may be produced in the glass in a zone 4.
  • a robust layer 5 of synthetic resins having a thickness of a few mms. and consisting of a mixture of glass fibres having a length of from 1 to 3 cm. and a hardened unsaturated polyester resin having satisfactory adherence to the glass.
  • This mixture may consist of 3 parts by weight of glass fibres and 7 parts by weight of a solution of an unsaturated polyester in, for example, styrene and may be applied to the glass surface by spraying and pressed to this surface by means of a roller.
  • the unsaturated polyester may be obtained by polycondensation of an 0:, 18 unsaturated dicarboxylic acid and a polyvalent alcohol.
  • the polyester may be modified with saturated and/or halogen containing dicarboxylic acids.
  • the polyvalent alcohols may be glycols or glycerol.
  • Hardening may take place under the influence of known combinations of catalysts, such as benzoyl peroxide, methyl ethyl ketone peroxide and the like, and of accelerators, such as cobalt naphthenate or dimethyl aniline.
  • catalysts such as benzoyl peroxide, methyl ethyl ketone peroxide and the like
  • accelerators such as cobalt naphthenate or dimethyl aniline.
  • a solution of the catalyst in a part of the polyester styrene mixture may be mixed with a solution of the hardening accelerator in the remainder of the polyester styrene mixture.
  • the unsaturated polyester solution may also contain dyes and pigments and fillers, such as titanium dioxide (TiO in order to counteract shrinking and cracking of the layer during the hardening process.
  • dyes and pigments and fillers such as titanium dioxide (TiO in order to counteract shrinking and cracking of the layer during the hardening process.
  • the glass fibres may consist of substantially any glass which is readily workable. Glasses having a low alkaline content are highly suitable.
  • a glass cord 6 is wound on the tube envelope during the process of spraying the glass surface with polyester resin, the assembly being pressed to the glass, so that a continuous fibre containing layer is produced having satisfactory adherence to the glass.
  • the envelope is previously covered with an intermediate layer 7, which may consist of polyvinyl acecoating comprising a layer of strongly adherent synthetic resin containing wire-like fibres, an intermediate layer of synthetic resin between the implosion resistant coating and the portions of the tube covered thereby for promoting adherence of the coating to the tube.
  • an intermediate layer 7 which may consist of polyvinyl acecoating comprising a layer of strongly adherent synthetic resin containing wire-like fibres, an intermediate layer of synthetic resin between the implosion resistant coating and the portions of the tube covered thereby for promoting adherence of the coating to the tube.
  • a cathode-ray tube comprising a transparent window portion and a cone portion adjoining said window portion and an implosion resistant noncompressive coattate and has satisfactory adherence, the fibre containing layer 5 of synthetic resin being applied on said intermediate layer.
  • the synthetic resin layer may also serve to provide the envelope with lugs for securing the tube in a cabinet.
  • the wall thickness of the envelope and hence the weight of the tube may be materially reduced, since the strength of the envelope is increased by the coating according to the invention and also, owing to the fact that implosion of fracture of the envelope now is completely harmless, the safety factor may be lower.
  • the synthetic resin layer itself may be rendered conductive by the addition of particles of metal or graphite, or by incorporating conductive fibres of metal gauze in this layer.
  • a cathode-ray tube comprising a transparent window portion and a cone portion adjoining said window portion and an implosion resistant noncompressive coating covering a zone adjoining the Window portion and extending over a portion of the cone, said implosion resistant coating comprising a layer of strongly adherent synthetic resin containing wire-like fibers.
  • a cathode-ray tube comprising a transparent window portion and a cone portion adjoining said window portion, an implosion resistant noncompressive coating covering a zone adjoining the window portion and extending over a portion of the cone, said implosion resistant ing covering a zone adjoining the window portion and extending over a portion of the cone, said implosion resistant coating comprising a layer of strongly adherent synthetic resin containing Wire-like glass fibers having a length of about 1 to 3 cms.
  • a cathode-ray tube comprising a, transparent window portion and a cone portion adjoining said window portion and an implosion resistant noncompressive coating covering a zone adjoining the window portion and extending overa portion of the cone, said implosion resistant coating comprising a wound cord of glass fibers embedded in a synthetic resin strongly adherent to the surface of the ,tube to which it is applied.
  • a cathode-ray tube comprising a transparent window portion and a cone portion adjoining said window portion and an implosion resistant noncompressive coating covering a zone adjoining the window portion and extending over a portion of the cone, said implosion resistant coating comprising a layer of strongly adherent hardened unsaturated polyester resin containing wire-like fibers.

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
US143893A 1960-11-03 1961-10-09 Glass cathode ray tube for reproducing images Expired - Lifetime US3166211A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL257590 1960-11-03

Publications (1)

Publication Number Publication Date
US3166211A true US3166211A (en) 1965-01-19

Family

ID=19752676

Family Applications (1)

Application Number Title Priority Date Filing Date
US143893A Expired - Lifetime US3166211A (en) 1960-11-03 1961-10-09 Glass cathode ray tube for reproducing images

Country Status (6)

Country Link
US (1) US3166211A (es)
BE (1) BE609841A (es)
CH (1) CH394407A (es)
DE (1) DE1162493B (es)
ES (1) ES271668A1 (es)
GB (1) GB929090A (es)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3220592A (en) * 1962-03-19 1965-11-30 Owens Illinois Glass Co Cathode-ray and other vacuumized tubes resistant to violent devacuation
US3260397A (en) * 1961-02-24 1966-07-12 Philips Corp Cathode ray tube and method of making same
US3297188A (en) * 1964-05-14 1967-01-10 William R Aiken Envelope for cathode ray tubes
US3310194A (en) * 1961-04-28 1967-03-21 Loing Verreries Cathode ray tube envelope
US3314566A (en) * 1964-12-18 1967-04-18 Owens Illinois Inc Reinforced cathode-ray tube and face plate therefor
US3382999A (en) * 1964-12-14 1968-05-14 Owens Illinois Inc Cathode-ray tubes and method of reinforcing the tubes
US3383000A (en) * 1964-12-14 1968-05-14 Owens Illinois Inc Cathode-ray tubes and method of reinforcing the tubes
US3647960A (en) * 1969-01-06 1972-03-07 Hitachi Ltd Implosion-proof cathode-ray tube and method of making same
US3904820A (en) * 1973-02-12 1975-09-09 Philips Corp Cathode-ray tube with implosion safety
US4656388A (en) * 1985-05-17 1987-04-07 Zenith Electronics Corporation Tensed mask color cathode ray tube and mask support frame therefore
US6504298B2 (en) * 1998-03-09 2003-01-07 Koninklijke Philips Electronics N.V. Picture display device with a conical portion having a particular wall thickness
US20040227450A1 (en) * 2001-10-17 2004-11-18 Asahi Glass Company Limited Glass funnel for a cathode ray tube and cathode ray tube technical field
WO2005096339A1 (en) * 2004-03-09 2005-10-13 Thomson Licensing Lightweight high deflection angle cathode ray tube and method of making the same
US20060186784A1 (en) * 2005-02-18 2006-08-24 Bae Joon-Soo Cathode ray tube (CRT)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2293529A (en) * 1940-06-29 1942-08-18 Rca Corp Image tube
US2734142A (en) * 1956-02-07 Cathode ray tubes
US2785820A (en) * 1952-06-28 1957-03-19 Owens Illinois Glass Co Controlling implosions in cathode ray and other tubes
US2859109A (en) * 1954-12-31 1958-11-04 Hawley Products Co Felted products containing glass filaments
US2873226A (en) * 1954-02-11 1959-02-10 Distillers Co Yeast Ltd Method of making glass reinforced plastic articles
US2963612A (en) * 1959-05-08 1960-12-06 Duro Test Corp Electric lamp and method of producing

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2031722A (en) * 1932-07-20 1936-02-25 Loewe Siegmund Braun tube
GB427093A (en) * 1932-08-13 1935-04-12 Siegmund Loewe Braun tube

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734142A (en) * 1956-02-07 Cathode ray tubes
US2293529A (en) * 1940-06-29 1942-08-18 Rca Corp Image tube
US2785820A (en) * 1952-06-28 1957-03-19 Owens Illinois Glass Co Controlling implosions in cathode ray and other tubes
US2873226A (en) * 1954-02-11 1959-02-10 Distillers Co Yeast Ltd Method of making glass reinforced plastic articles
US2859109A (en) * 1954-12-31 1958-11-04 Hawley Products Co Felted products containing glass filaments
US2963612A (en) * 1959-05-08 1960-12-06 Duro Test Corp Electric lamp and method of producing

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3260397A (en) * 1961-02-24 1966-07-12 Philips Corp Cathode ray tube and method of making same
US3310194A (en) * 1961-04-28 1967-03-21 Loing Verreries Cathode ray tube envelope
US3220592A (en) * 1962-03-19 1965-11-30 Owens Illinois Glass Co Cathode-ray and other vacuumized tubes resistant to violent devacuation
US3297188A (en) * 1964-05-14 1967-01-10 William R Aiken Envelope for cathode ray tubes
US3382999A (en) * 1964-12-14 1968-05-14 Owens Illinois Inc Cathode-ray tubes and method of reinforcing the tubes
US3383000A (en) * 1964-12-14 1968-05-14 Owens Illinois Inc Cathode-ray tubes and method of reinforcing the tubes
US3314566A (en) * 1964-12-18 1967-04-18 Owens Illinois Inc Reinforced cathode-ray tube and face plate therefor
US3647960A (en) * 1969-01-06 1972-03-07 Hitachi Ltd Implosion-proof cathode-ray tube and method of making same
US3904820A (en) * 1973-02-12 1975-09-09 Philips Corp Cathode-ray tube with implosion safety
US4656388A (en) * 1985-05-17 1987-04-07 Zenith Electronics Corporation Tensed mask color cathode ray tube and mask support frame therefore
US6504298B2 (en) * 1998-03-09 2003-01-07 Koninklijke Philips Electronics N.V. Picture display device with a conical portion having a particular wall thickness
US20040227450A1 (en) * 2001-10-17 2004-11-18 Asahi Glass Company Limited Glass funnel for a cathode ray tube and cathode ray tube technical field
US6919677B2 (en) * 2001-10-17 2005-07-19 Asahi Glass Company, Limited Glass funnel for a cathode ray tube and cathode ray tube
WO2005096339A1 (en) * 2004-03-09 2005-10-13 Thomson Licensing Lightweight high deflection angle cathode ray tube and method of making the same
US20080218055A1 (en) * 2004-03-09 2008-09-11 James John Maley Lightweight High Deflection Angle Cathode Ray Tube and Method of Making the Same
US20060186784A1 (en) * 2005-02-18 2006-08-24 Bae Joon-Soo Cathode ray tube (CRT)
US7525243B2 (en) * 2005-02-18 2009-04-28 Samsung Sdi Co., Ltd. CRT for display device with shatter proof member attached to funnel using adhesive

Also Published As

Publication number Publication date
BE609841A (fr) 1962-04-30
ES271668A1 (es) 1962-01-16
GB929090A (en) 1963-06-19
CH394407A (de) 1965-06-30
DE1162493B (de) 1964-02-06

Similar Documents

Publication Publication Date Title
US3166211A (en) Glass cathode ray tube for reproducing images
US3220592A (en) Cathode-ray and other vacuumized tubes resistant to violent devacuation
US2090922A (en) Braun tube for producing television images rich in contrast
US3562518A (en) Color kinescope with improved x-ray protection
US3206056A (en) Glass cathode-ray tube for the reproduction of images
US3725710A (en) Method of making a cathode-ray tube
US2031722A (en) Braun tube
US4236184A (en) Multi-function structure for a color cathode ray tube
JPH05343007A (ja) 陰極線管およびその製造方法
US3260397A (en) Cathode ray tube and method of making same
JPH11283530A (ja) 陰極線管及びその製造方法
US5420475A (en) Cathode-ray tube
PL46620B1 (es)
JPH05182604A (ja) 陰極線管
PL46974B1 (es)
KR20000009405A (ko) 투명한 전도성 광선택 흡수피막이 형성된화상표시면판 및 그제조방법과 그 도포용액
KR960000920B1 (ko) 개량된 유리 패널을 가지는 음극선관
US6958574B1 (en) Image display device
US5903089A (en) Monochrome CRT having curved display window with reduced transmission and projection color TV incorporating same
KR0136517Y1 (ko) 음극선관
KR0130371B1 (ko) 칼라 음극선관의 유해전자파 차폐구조
KR100291907B1 (ko) 음극선관
JPH0945263A (ja) 陰極線管
KR20010084773A (ko) 음극선관의 패널
JPS5715343A (en) Cathode ray tube