Percussion igniter for projectiles and projectile embodying the same

• US 3,885,500 A
• Filed: 10/16/1973
• Issued: 05/27/1975
• Est. Priority Date: 10/05/1973
• Status: Expired due to Term

• Current Assignee: Robert M. Bornand
• Original Assignee: Robert M. Bornand
• Inventors: Bornand, Robert M.
• Primary Examiner(s): Stahl, Robert F.
• Application Number:
  US05/406,930
• Time in Patent Office: 588 Days
• Field of Search: 102/45,78,38,44,70,56
• US Class Current: 102/470
• CPC Class Codes: F42C 19/10 Percussion caps

Abstract

A percussion igniter for projectiles, having a striker located up-stream of a thin walled primer and having in line with an annular bottom of a primer carrier, an annular and concave lower face, which centrally draws out into a coaxial protruding part.

Claims

1. In a percussion igniter for projectiles, comprising an igniter body, a primer within said igniter body, a striker disposed in said igniter body for movement toward and away from said primer, said body having an annular internal shoulder thereon that surrounds an opening through the bottom of said primer to provide access to said striker, said body and primer and striker and shoulder being coaxial;

the improvement in which said striker has a concave surface confronting said annular shoulder whereby upon combustion of said primer, said striker is forced against said annular shoulder to flatten out said concave surface against said annular shoulder thereby to seal against the escape of gas under pressure through said opening.

2. An igniter as claimed in claim 1, and a hollow thin-walled protrusion extending axiAlly from said striker into said opening.

3. An igniter as claimed in claim 1, and a solid projection extending axially from said striker into said opening, said projection being reduced in diameter at its base to promote collapse of said projection upon impact.

4. An igniter as claimed in claim 1, and a coil compression spring extending axially from said striker into said opeing.

5. A projectile having an explosive charge therein and a percussion igniter therefor as claimed in claim 1.