Patent · US Active

Breech and method for noise reduction

US11067354B2 · kind B2 · utility

2Cited by

9References

15Claims

0Family size

Assignee

SAAB AB · SE

Inventors

Mathias Lindström · Umeå, SE
Peter Karlsson · Lund, SE
Göran Backlund · Linköping, SE
Ingrid Söderquist · Linköping, SE

Key dates

Filing date	May 17, 2017
Grant date	Jul 20, 2021
Priority date	—
Expiry date	May 17, 2037

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF41F3/0455
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A breech for noise reduction in a recoil-less weapon is described. The breech is adapted to be arranged in fluid communication with a launcher of the weapon to release exhaust gas. The breech comprises a venturi tube. The venturi tube has an inlet at a first end adapted to be connected to the launcher, and an outlet for releasing the exhaust gas at a second end, wherein the area of the outlet is larger than the area of the inlet. The venturi tube further comprises an exhaust gas controlling element formed at the venturi tube structure. The exhaust gas controlling element is arranged to control the release of exhaust gas so as to decrease a sound pressure peak at the weapon. The inner envelope surface of the venturi tube is configured, such that the inner envelope surface does not alter or at least has a very small influence on recoil characteristics of the weapon.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.