Patent · US Expired

Coil strip safety device for spinning projectiles

US4467723A · kind A · utility

2Cited by

5References

7Claims

0Family size

Assignee

Gebruder Junghans GmbH · DE

Inventors

Hans Kaiser
Walter Winterhalter · Tennenbronn, DE
Karl Wild · Schramberg, DE
Peter Gruner · Schramberg, DE

Key dates

Filing date	Aug 17, 1982
Grant date	Aug 28, 1984
Priority date	—
Expiry date	Aug 17, 2002

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF42C15/23
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A fuze for a spinning projectile has a firing pin which is held against movement by a safety device until the projectile has traveled a preset distance. The safety device comprises a coil spring strip which overlies the firing pin in its initially coiled-up state, and releases the firing pin when in a centrifugally-induced expanded state. The spring coil is arranged to be highly elastic so as to be returnable to its initially coiled-up, evenly wound state, even after the projectile has been subjected to jarring during transport, etc. The coil strip has a tensile strength of 1200 to 2800 N/mm.sup.2 and a thickness greater than 20 .mu.m.

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