Ignition device for pyrotechnic microcharges

• US 6,666,140 B2
• Filed: 06/20/2002
• Issued: 12/23/2003
• Est. Priority Date: 07/13/2001
• Status: Expired due to Fees

• Current Assignee: Herakles
• Original Assignee: SNPE
• Inventors: Roller, Denis
• Primary Examiner(s): Jordan, Charles T.
• Assistant Examiner(s): NGUYEN, TRINH T
• Application Number:
  US10/175,067
• Publication Number:
  US 20030010243A1
• Time in Patent Office: 551 Days
• Field of Search: 102/202.5, 102/322, 102/202.8, 102/200
• US Class Current: 102/202.8
• CPC Class Codes: F42C 19/085 Primers for caseless ammunition
• CPC Class Codes: F42C 19/12 electric

Abstract

A device for igniting a solid pyrotechnic charge, including a conducting track, wherein the track consists of a conducting fluid deposited at least partially on the pyrotechnic charge, the pyrotechnic charge is deposited on a solid support and covers an empty cavity of the support, and the cavity forms a empty space between the pyrotechnic charge and the support.

Claims

1. A device for igniting a solid pyrotechnic charge, comprising a conducting track, wherein the track consists of a conducting fluid deposited at least partially on the pyrotechnic charge, the pyrotechnic charge is deposited on a solid support and covers an empty cavity of the support, and the cavity forms an empty space between the pyrotechnic charge and the support.

2. The ignition device according to claim 1, wherein the conducting fluid is deposited by screen printing.

3. The ignition device according to claim 1, wherein the conducting fluid is a conducting ink and the conducting track is produced by jet-spraying the ink.

4. The ignition device according to claim 1, wherein the conducting track is only in contact with the pyrotechnic charge.

5. The ignition device according to claim 1, wherein the pyrotechnic charge is in the form of a film.

6. The ignition device according to claim 1, wherein the pyrotechnic charge is based on nitrocellulose.

7. The ignition device according to claim 1, wherein the conducting fluid is deposited directly on the pyrotechnic charge.

8. The ignition device according to claim 7, wherein the deposition is carried out by screen printing.

9. The ignition device according to claim 7, wherein the conducting fluid is a conducting ink and the deposition is carried out by jet-spraying the said ink.

10. The ignition device according to claim 5, wherein the pyrotechnic charge is based on nitrocellulose.