Patent · US Expired

Propellant igniting system and method of making the same

US5670735A · kind A · utility

26Cited by

4References

26Claims

0Family size

Assignee

Rheinmetall Industrie AG · DE

Inventors

Helmut Ortmann · Duisburg, DE
Gunter Frye · Erkrath, DE
Rainer Böhm · Rietz-Neuendorf, DE
Manfred Lubben · Celle, DE

Key dates

Filing date	Dec 22, 1995
Grant date	Sep 23, 1997
Priority date	—
Expiry date	Dec 22, 2015

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF42C19/085
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

An igniting system for a projectile propellant includes a combustible support tube having an outer surface and an inner surface; a plurality of throughgoing apertures provided in the support tube; a free igniting channel coaxially surrounded by the support tube; and an ignition transfer charge formed of a pyrotechnical hard foam layer having a thickness between 1 and 3 mm and being carried on the outer surface of the support tube. The hard foam layer is composed of a large-pore inner layer and two opposite surface layers which are of densely closed structure and between which the inner layer is sandwiched.

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