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

DOCDB simple 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