GunClaims
Weekly firearms and ammunition patent grants.
Jan 13, 2026

US12523452 - Compact self-defense devices and alert systems

Compact self-defense devices and alert systems are disclosed. An example compact self-defense device includes a housing defining a chamber configured to house a cartridge of an inflammatory agent. The compact self-defense device includes a spray nozzle including a button and at least partially housed in the housing. The spray nozzle is configured to receive the cartridge in the housing. The spray nozzle is configured to spray the inflammatory agent when the button is engaged. The compact self-defense device includes a sensor housed in the chamber and configured to detect when the spray nozzle is spraying the inflammatory agent. The compact self-defense device includes a communication module housed in the chamber and configured to transmit a signal for alerting one or more preselected emergency contacts in response to the sensor detecting that the spray nozzle is spraying the inflammatory agent.

The patent describes a compact self-defense device that houses a cartridge of an inflammatory agent and features a spray nozzle activated by a button. It includes a sensor to detect the spraying action and a communication module that alerts preselected emergency contacts when the agent is deployed.

Claim 1

1 . A compact self-defense device, comprising: a housing defining a chamber configured to house a cartridge of an inflammatory agent and including a door configured to provide access to the cartridge housed in the chamber; a spray nozzle including a button and at least partially housed in the housing, wherein the spray nozzle is configured to receive the cartridge in the housing, and wherein the spray nozzle is configured to spray the inflammatory agent when the button is engaged; a sensor housed in the chamber and configured to detect when the spray nozzle is spraying the inflammatory agent; and a communication module housed in the chamber and configured to transmit a signal for alerting one or more preselected emergency contacts in response to the sensor detecting that the spray nozzle is spraying the inflammatory agent. a housing defining a chamber configured to house a cartridge of an inflammatory agent and including a door configured to provide access to the cartridge housed in the chamber; a spray nozzle including a button and at least partially housed in the housing, wherein the spray nozzle is configured to receive the cartridge in the housing, and wherein the spray nozzle is configured to spray the inflammatory agent when the button is engaged; a sensor housed in the chamber and configured to detect when the spray nozzle is spraying the inflammatory agent; and a communication module housed in the chamber and configured to transmit a signal for alerting one or more preselected emergency contacts in response to the sensor detecting that the spray nozzle is spraying the inflammatory agent.

Google Patents

https://patents.google.com/patent/US12523452

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12523452