Patent ID: 8601928

Claim:
An aquatic non-lethal entanglement device, including tendrils, for deployment below the surface of a body of water, the restraint device for intercepting and entangling a target swimmer using the relative motion of the target swimmer and the tendrils to entangle the target swimmer swimming under the surface of the body of water when the tendrils are deployed, the entanglement device comprising: a housing having a tendril deployment head, the tendril deployment head having a pressure manifold inboard of the exterior surface of the tendril deployment head; a barrel extending from the exterior of the tendril deployment head to the pressure manifold; a launchable spool having an elongated hollow body carried in the barrel of the tendril deployment head; a pressure source carried in the pressure manifold; a projectile carried on the launchable spool which is carried in the barrel of the tendril deployment head, the projectile having a hydro-dynamic shape; at least one tendril for entangling the target swimmer carried on the launchable spool, the at least one tendril connected at one end thereof to the tendril deployment head and at a second end of the at least one tendril connected to the projectile; a buoyancy bag to effect the buoyancy of the device, the buoyancy bag initially pressurized to float the entanglement device at a level below the surface of the body of water.