Propellant igniter assembly having a multi-zone booster charge

US5831204A · kind A · utility

Assignee

• Rheinmetall Industrie AG · DE

Inventors

• Manfred Lubben · Celle, DE
• Stefan Thiesen · Willich, DE
• Walter Simon · Orpund, CH
• Dieter Jungbluth · Selters (Westerwald), DE

Key dates

• Filing date: Dec 2, 1996
• Grant date: Nov 3, 1998
• Expiry date: Dec 2, 2016

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F42C19/12
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A propellant igniter assembly includes a housing having ignition channels for the passage of an ignition flame through the housing; an igniter part accommodated in the housing; and a booster part accommodated in the housing and frontally adjoining the igniter part. The booster part has a booster charge which includes a first partial booster charge adjoining the igniter part and composed of a readily ignitable substance and a second partial booster charge adjoining the first partial booster charge and being separated thereby from the igniter part. The second partial booster charge entirely obturates all the ignition channels. The second partial booster charge has a burning behavior and a mechanical stability such that the ignition channels remain obturated for a short duration even after ignition of the second partial booster charge, whereby a firing impact is first retained in the booster part and is subsequently abruptly released in a concentrated form through the ignition channels.