Global Patent Index - EP 1878995 A2

EP 1878995 A2 20080116 - Percussion fuse with piezoelectric generator

Title (en)

Percussion fuse with piezoelectric generator

Title (de)

Aufschlagzünder mit piezoelektrischem Generator

Title (fr)

Fusée d'impact à générateur piézoélectrique

Publication

EP 1878995 A2 20080116 (FR)

Application

EP 07290832 A 20070702

Priority

FR 0606449 A 20060713

Abstract (en)

The rocket impact (1) comprises a body (2) having a piezoelectric generator (4) placed on a support of the body, which forms an anvil, and a piston (7) to exert a mechanical constraint on the generator and to receive an effort transmitted by a cap. The piston slides with respect to the body. A plastic deformable unit is interposed between the cap and the body, where the unit is distorted by a movement of the body during the impact of the rocket on a target. An energy consumed by the distortion of the unit ensures a progressive pressing of the piezoelectric generator. The rocket impact (1), comprises a body (2) having a piezoelectric generator (4) placed on a support of the body, which forms an anvil, and a piston (7) to exert a mechanical constraint on the generator and to receive an effort transmitted by a cap. The piston slides with respect to the body. A plastic deformable unit is interposed between the cap and the body, where the unit is distorted by a movement of the body during the impact of the rocket on a target. An energy consumed by the distortion of the unit ensures a gradual collapse of the piezoelectric generator during the impact of rocket on the target. The plastic deformable unit is constituted by a metal washer (10). The metal washer has two deformable caps separated by a groove.

Abstract (fr)

L'invention a pour objet une fusée 1 d'impact comportant un corps 2 renfermant un générateur piézoélectrique 4 qui mis en place sur un support solidaire du corps 2 et formant enclume, fusée comportant un piston 7 destiné à venir exercer une contrainte mécanique sur le générateur, piston qui reçoit l'effort d'impact transmis par une coiffe 9. Cette fusée est caractérisée en ce que le piston 7 est monté coulissant par rapport au corps 2 et en ce qu'elle comporte un moyen 10 plastiquement déformable qui est interposé entre la coiffe 9 et le corps 2, moyen qui est déformé par le déplacement de la coiffe 9 lors de l'impact sur une cible, ce déplacement entraînant le déplacement du piston 7.

IPC 8 full level

F42C 11/02 (2006.01); F42C 1/10 (2006.01)

CPC (source: EP US)

F42C 1/10 (2013.01 - EP US); F42C 11/02 (2013.01 - EP US)

Citation (applicant)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK RS

DOCDB simple family (publication)

EP 1878995 A2 20080116; EP 1878995 A3 20080827; EP 1878995 B1 20110216; AT E498817 T1 20110315; DE 602007012487 D1 20110331; ES 2361441 T3 20110617; FR 2903772 A1 20080118; FR 2903772 B1 20101022; NO 20073609 L 20080114; NO 336875 B1 20151123; PL 1878995 T3 20110729; US 2008011178 A1 20080117; US 7661363 B2 20100216

DOCDB simple family (application)

EP 07290832 A 20070702; AT 07290832 T 20070702; DE 602007012487 T 20070702; ES 07290832 T 20070702; FR 0606449 A 20060713; NO 20073609 A 20070712; PL 07290832 T 20070702; US 82240007 A 20070705