Aug 19, 2025

US12392591 - Electronic time warhead fuze

An electronic time warhead (EOT) fuze for a hand grenade comprises a body housing a clamp with two terminals maintaining a spring and a handle in the armed position. The handle holds the spring in the armed position while the user wields the grenade. The spring is housed in a spring pin and this initializes the EOT. When throwing the grenade, the spring seeks a resting position, expelling the handle and activating a switch that energizes an electronic circuit. A battery is electrically connected to the electronic circuit. In addition, an initiator element is mounted on the body and the initiator element consists of a conductive filament impregnated with a chemical mixture generating a flame from the electrical signal applied by the electronic circuit. The initiating element can be an electrical or electronic component. The electronic circuit accounts for a delay time until the grenade's initiating flame is effectively activated. In some embodiments, the electronic circuit is a microprocessor circuit that applies the electrical signal to the conductive filament at the end of the delay time, activating the grenade.

Assignee: CONDOR S.A. INDÚSTRIA QUÍMICA
Inventors: Carlos Frederico Queiroz De Aguiar
Filing date: 2024-01-03

The patent describes an electronic time warhead fuze for hand grenades that utilizes a spring mechanism to arm the device and an electronic circuit to control the ignition of an initiator element upon throwing. This initiator element, made of a conductive filament and chemical mixture, generates a flame when activated by an electrical signal after a predetermined delay.

Claim 1

An electronic time warhead (EOT) fuze for a hand grenade, comprising: a body; a clamp with two terminals keeping a spring and a handle in an armed position; the handle keeping the spring in the armed position while the user wields the hand grenade; the spring being housed in a spring pin, wherein the spring initializes the EOT which, when the hand grenade is thrown, seeks a rest position by expelling the handle and activating a switch energizing an electronic circuit; a battery electrically connected to the electronic circuit; and an initiator element, wherein the initiator element consists of a conductive filament impregnated with a chemical mixture generating an initiating flame from the electrical signal applied by the electronic circuit. a body; a clamp with two terminals keeping a spring and a handle in an armed position; the handle keeping the spring in the armed position while the user wields the hand grenade; the spring being housed in a spring pin, wherein the spring initializes the EOT which, when the hand grenade is thrown, seeks a rest position by expelling the handle and activating a switch energizing an electronic circuit; a battery electrically connected to the electronic circuit; and an initiator element, wherein the initiator element consists of a conductive filament impregnated with a chemical mixture generating an initiating flame from the electrical signal applied by the electronic circuit.

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USPTO PDF

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