Electric detonator device

US4690056A · kind A · utility

Assignee

• Dynamit Nobel GmbH · DE

Inventors

• Uwe Brede · Ergolding, DE
• Gerhard Kordel · Wendelstein, DE

Key dates

• Filing date: Jan 31, 1985
• Grant date: Sep 1, 1987
• Expiry date: Jan 31, 2005

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F42B3/124
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

An electric detonator device including an insulating carrier member carrying an ignition bridge and first and second electrodes connected to the ignition bridge. At least one of the electrodes is provided in the form of a layered conductor path configured to provide a high-frequency filter so as to prevent high-frequency interference signals from passing to the ignition bridge and causing misfiring.