Safety device for a spin stabilized projectile fuse, process for making such a safety device and spin-stabilized fuse having such a safety device
US5625161A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1995 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Jul 10, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42C15/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A safety device to lock a firing pin of a spin-stabilized projectile fuse includes a flexible strip and a spiral spring. The flexible strip is disposed around the firing pin and has a first end, a second end and a length. The flexible strip is made of an elastic material. The spiral spring is windable around the flexible strip in a safe position and is disposed to unwind under centrifugal force to a firing position. The spiral spring is made of a spring strip that is wound around itself. When the spiral spring unwinds, the flexible strip unwinds within the spiral spring without exerting an elastic return force toward the firing pin. The length of the flexible strip is dimensioned such that the first end is offset in a circumferential direction relative to the second end by an offset amount when the flexible strip presses against the spiral spring in the firing position. As a result, the spin-stabilized projectile fuse functions reliably.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.