Power supply for providing electrical energy to a self-destruct fuze for submunitions contained in a projectile

Patent metadata

Field	Value
Publication number	US-9791252-B2
Application number	US-201615152491-A
Country	US
Kind code	B2
Filing date	May 11, 2016
Priority date	Jun 10, 2008
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

A power supply for providing electrical energy to a self-destruct fuze for submunitions contained in a projectile. The power supply including: a movable mass; at least one elastic element attached to the mass at one end for storing mechanical energy upon a firing acceleration of the projectile; at least one piezoelectric element attached to another end of the at least one elastic element for converting the stored mechanical energy to electrical energy upon the firing acceleration to vibrate the mass and at least one elastic element to apply a cyclic force to the at least one piezoelectric element; and a self destruct fuze for detonation of the self destruct fuze upon receiving the electrical energy.

First claim

What is claimed is:

1. A power supply for providing electrical energy to a self-destruct fuze for submunitions contained in a projectile, the power supply comprising:
a first movable mass;
at least one elastic element attached to the first movable mass at one end for storing mechanical energy upon a firing acceleration of the projectile;
a second movable mass engaged with the first movable mass such that movement of the second movable mass upon the firing acceleration moves the second movable mass which in turn moves the first movable mass;
at least one piezoelectric element attached to another end of the at least one elastic element for converting the stored mechanical energy to electrical energy upon the firing acceleration to vibrate the first movable mass and the at least one elastic element to apply a cyclic force to the at least one piezoelectric element; and
a locking mechanism for locking the second movable mass in a position where the second movable mass cannot interfere with vibration of the first movable mass upon the second movable mass being subjected to the firing acceleration.

2. The power supply of claim 1 , wherein the first movable mass and second movable mass are engaged through respective first and second inclined surfaces.

3. The power supply of claim 1 , wherein the at least one piezoelectric element comprises a stack of a plurality of piezoelectric elements.

Assignees

• Rastegar Jahangir S
• Murray Richard T
• Janow Chris
• Dratler Richard
• Ominitek Partners Llc

Inventors

• Rastegar Jahangir S
• Murray Richard T
• Janow Chris
• Dratler Richard

Classifications

• F42C9/16

  for self-destruction of ammunition {(F42C9/141 - F42C9/148 take precedence)} · CPC title

• F42C11/02 Primary

  with piezo-crystal · CPC title

• F42C11/008

  Power generation in electric fuzes (F42C11/02, F42C11/04 and F42C15/295 take precedence) · CPC title

• F42C15/44

  Arrangements for disarming, or for rendering harmless, fuzes after arming, e.g. after launch · CPC title