Global patent index - EP 0970501 A4

EP 0970501 A4 2000-01-12 - 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 (EN)

Application

EP 97912742 A

Priority

  • US 9718684 W
  • US 2947696 P

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 (main, further and additional classification)

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

IPC 8 full level (invention and additional information)

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 (invention and additional information)

H01J 29/87 (2013.01)

Designated contracting state (EPC)

DE FR GB NL

EPO simple patent family

WO 9818151 A1 19980430; BR 9714618 A 20000509; CN 1144253 C 20040331; CN 1234135 A 19991103; CZ 9901356 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

INPADOC legal status

2006-10-25 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20060503

2002-05-02 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020313

2000-01-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990512

2000-01-12 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 19991125

2000-01-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB NL

2000-01-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): DE FR GB NL