Global Patent Index - EP 0970501 A4

EP 0970501 A4 20000112 - IMPLOSION-RESISTANT CATHODE RAY TUBE ENVELOPE

Title (en)

IMPLOSION-RESISTANT CATHODE RAY TUBE ENVELOPE

Title (de)

IMPLOSIONSBESTÄNDIGE KATHODERSTRAHLRÖHRENUMHÜLLUNG

Title (fr)

ENVELOPPE DE TUBE CATHODIQUE RESISTANTE A L'IMPLOSION

Publication

EP 0970501 A4 20000112 (EN)

Application

EP 97912742 A 19971020

Priority

  • US 9718684 W 19971020
  • US 2947696 P 19961024

Abstract (en)

[origin: WO9818151A1] A glass envelope for a cathode ray tube (10) and a method of production. The envelope comprises (12) a panel member having a thickness (t) that is defined by an equation which involves net tensile stress; wherein the panel having a net tensile stress not exceeding 1150 psi, having a surface compression induced during panel manufacture, and having an implosion protection band (30) shrink-fitted around a skirt (20) on the panel that augments surface compression in the panel (12), whereby the panel thickness is substantially less than that of a corresponding untreated tube envelope.

IPC 1-7

H01J 31/00; H01J 29/46; H01J 29/87; H01J 61/30; H01K 1/28

IPC 8 full level

H01J 9/24 (2006.01); C03B 23/07 (2006.01); H01J 29/46 (2006.01); H01J 29/86 (2006.01); H01J 29/87 (2006.01); H01J 31/00 (2006.01); H01J 61/30 (2006.01)

CPC (source: EP)

H01J 29/87 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB NL

DOCDB simple family (publication)

WO 9818151 A1 19980430; BR 9714618 A 20000509; CN 1144253 C 20040331; CN 1234135 A 19991103; CZ 135699 A3 19991215; EP 0970501 A1 20000112; EP 0970501 A4 20000112; JP 2001502841 A 20010227; KR 20000052780 A 20000825; RU 2177188 C2 20011220; TW 419701 B 20010121

DOCDB simple family (application)

US 9718684 W 19971020; BR 9714618 A 19971020; CN 97198950 A 19971020; CZ 135699 A 19971020; EP 97912742 A 19971020; JP 51949098 A 19971020; KR 19997003592 A 19990423; RU 99111782 A 19971020; TW 86115745 A 19971021