Global Patent Index - EP 0862721 A4

EP 0862721 A4 2000-01-12 - IMPROVED COMPOSITE/METALLIC GUN BARREL

Title (en)

IMPROVED COMPOSITE/METALLIC GUN BARREL

Title (de)

VERBESSERTER WAFFENLAUF AUS FASER VERSTÄRTEM KUNSTSTOFF UND METALL

Title (fr)

CANON DE FUSIL COMPOSITE/METALLIQUE AMELIORE

Publication

EP 0862721 A4 (EN)

Application

EP 96945947 A

Priority

  • US 9620304 W
  • US 57369795 A
  • US 57440295 A
  • US 57369395 A

Abstract (en)

[origin: WO9722843A1] A composite/metallic gun barrel (8) is disclosed having a metallic liner (12) and a composite casing (20) formed by groups of fibers (32). In accordance with one application of the principles of the present invention, the gun barrel is formed by alternating first and second groups of fibers (36, 40) wrapped about the liner, the first groups being disposed in a first orientation generally perpendicular to the long axis (A-A) of the liner, and the second groups including one or more layers disposed generally parallel with the long axis of the metallic liner. By controlling the amount of fibers in each group relative to the other group, the coefficients of thermal expansion in the radial direction can be matched to provide a gun barrel having desirable firing characteristics.

IPC 1-7 (main, further and additional classification)

F41A 21/00

IPC 8 full level (invention and additional information)

F41A 21/02 (2006.01)

CPC (invention and additional information)

F41A 21/02 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE

EPO simple patent family

WO 9722843 A1 19970626; AT 274179 T 20040915; AU 1743197 A 19970714; DE 69633188 D1 20040923; EP 0862721 A1 19980909; EP 0862721 A4 20000112; EP 0862721 B1 20040818

INPADOC legal status


2008-01-02 [PG25 PT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050118

2005-09-21 [REG IE MM4A] PATENT LAPSED

2005-08-19 [EN] FR: TRANSLATION NOT FILED

2005-08-10 [26N] NO OPPOSITION FILED

- Effective date: 20050519

2005-08-10 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20041218

2005-02-28 [REG CH PL] PATENT CEASED

2005-02-01 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

2004-12-20 [PG25 IE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2004-12-18 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2004-11-29 [PG25 ES] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2004-11-19 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2004-11-18 [PG25 DK] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2004-09-23 [REF] CORRESPONDS TO:

- Document: DE 69633188 P 20040923

2004-09-22 [REG IE FG4D] EUROPEAN PATENTS GRANTED DESIGNATING IRELAND

2004-08-31 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2004-08-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE

2004-08-18 [REG GB FG4D] EUROPEAN PATENT GRANTED

2004-08-18 [PG25 AT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2004-08-18 [PG25 BE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2004-08-18 [PG25 CH] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2004-08-18 [PG25 FI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2004-08-18 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2004-08-18 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2004-08-18 [PG25 LI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2004-08-18 [PG25 NL] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Effective date: 20040818

2003-12-10 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7F 41A 21/00 A

2003-12-10 [RTI1] TITLE (CORRECTION)

- Free text: COMPOSITE/METALLIC GUN BARREL

2001-09-19 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010807

2000-01-12 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 19991122

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

- Kind Code of Ref Document: A4

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE

1998-10-14 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19980714

1998-09-09 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE