Class 42/1.14 - UNDERWATER TYPE

Subclass of Class 42 - Firearms
Definition: Firearms adapted to be used and/or discharge in
No. of patents: 38
Last issue date: 11/01/2011

Number	Title	Issue Date
8046947	Underwater gun comprising a passive fluidic barrel seal An apparatus and method for sealing the barrel of an underwater gun between firings is disclosed. The apparatus clears the barrel and/or prevents water from entering the barrel based on pressure variations. ...	11/01/2011
8042295	Underwater gun comprising a barrel adapter including a barrel seal An apparatus and method for sealing the barrel of an underwater gun between firings is disclosed. The apparatus comprises an adapter that attaches to the barrel and includes a physical adaptation that is capable of sealing the barrel. In some embodiments, the physic...	10/25/2011
7874091	Underwater gun comprising a plate-type barrel seal An apparatus for sealing the barrel of an underwater gun between firings is disclosed. The apparatus comprises a magnetically-attractable water-impermeable disk. Via operation of a drive system, the disk is movable between a sealing position, wherein it prevents wat...	01/25/2011
7832134	Underwater gun comprising a turbine-based barrel seal An apparatus and method for sealing the barrel of an underwater gun between firings is disclosed. The apparatus comprises a turbine that is disposed at the outlet of the muzzle of the gun. The turbine draws in water and, in various embodiments, either (a) vaporizes ...	11/16/2010
7681352	Underwater gun comprising a valve-type barrel-seal An apparatus and method for sealing the barrel of an underwater gun between firings is disclosed. The apparatus comprises a valve that is moved between a sealing and non-sealing state by a valve-actuator. In some embodiments, the valve actuator is driven by gases th...	03/23/2010
7392733	High resolution projectile based targeting system A projectile based targeting system for underwater objects includes a trainable gun terminal mounted in a waterproof housing. The gun terminal includes plural gun barrels terminating in waterproof breeches. Noise generating projectiles are launched from the gun barr...	07/01/2008
7331108	Method and device for using compressed gas as a weapon A knife includes a handle, a blade and a trigger. The handle has an internal cavity containing a compressed gas source and the blade is affixed to the handle. The blade has an internal bore running along a longitudinal axis from the handle to a point proximate a tip...	02/19/2008
7313881	Pneumatic launcher system and method for operating same A pneumatic launcher has a plenum chamber section, an intermediate chamber section and a launch tube section connected together in a generally linear arrangement. The plenum chamber section defines a plenum chamber that has a closed end and an open end. The intermed...	01/01/2008
7237353	Muzzle break with gas relief membrane for an underwater gun A muzzle break for a gun comprising a baffle, a series of slots in the housing of the muzzle break in which the slots exhaust gas of a pressure wave deflected by the baffle during firing of the gun. A membrane seals the slots for underwater use and is separable by t...	07/03/2007
7140596	Bolt launcher This invention is a spring-powered bolt launcher to facilitate tugging wire or cable between two locations; typically, the locations are in low light levels, are remote by about 10–20 meters and are above a suspended ceiling in a building. The present launcher inc...	11/28/2006
7043864	Spear gun sight assembly A spear gun sight assembly includes a rear sight with a first plate having a generally perpendicular bend therein such that a vertically orientated lower portion and a horizontally orientated upper portion are defined. A peep sight is attached to and extends upwardl...	05/16/2006
6923105	Gun-armed countermeasure A device for countermeasuring an underwater target is provided. The device generally comprises a module having inflatable buoyancy chambers that allow the module to hover at a desired water depth, at least one acoustic array to detect the underwater target, a propul...	08/02/2005
6170477	Pneumatic spear gun A pneumatic spear gun (11) comprising a barrel (27) having an open end (33) through which a shaft (15) of a spear (13) can be received. A first piston (35) is slidingly and sealingly received in the barrel (27) for movement towards and away from a retract...	01/09/2001
5966858	Baffled muzzle brake and seal system for submerged gun operation A baffled muzzle brake and seal system for submerged gun operation includes a muzzle brake chamber mounted to the muzzle of a submerged gun barrel. A baffle assembly mounted within the chamber deflects the propellant gasses produced by operation of the...	10/19/1999
5943806	Shark gun A shark gun injects a sharpened projectile into a predator and thereafter forces compressed gas into the predator. The shark gun is comprised of a compressed gas holding cylinder, a firing chamber having a plunger that bears the sharpened projectile and a...	08/31/1999
5911568	Regulated gas source for underwater gun operation The present invention relates to an underwater weapon having a barrel with n opening through which a projectile is discharged. The weapon further has an apparatus for pressurizing the interior of the barrel to a pressure greater than the ambient pressure t...	06/15/1999
5746018	Muzzle brake for an underwater gun A device for use as a muzzle brake for an underwater gun having a project conveying structure with concentric inner and outer cylinders. The inner cylinder has at least one longitudinal slot formed therein. A sealing means joins the projectile conveying ...	05/05/1998
5687501	Sealing apparatus for exclusion of water from underwater gun barrels A sealing apparatus which may be mounted on multi or single barreled guns disclosed to provide a watertight seal on an underwater gun. The sealing apparatus comprises a sealing plate connected to a gun barrel and a muzzle seal which fit on the muzzle of ...	11/18/1997
5639982	Means to fire a fully automatic gun underwater using a special barrel clearance blank round A method of firing an automatic weapon in an underwater environment is diosed. The automatic weapon includes a barrel having a muzzle end and a chamber within the barrel. The method includes the steps of loading a blank round of ammunition into the chamb...	06/17/1997
5566858	Underwater tool element kit A compressed air safety gun for use underwater, having a handle and an elongate barrel extending therefrom, the handle including a valve therein being operable between open and closed position, by a trigger on the handle. A substantially flexible pneumati...	10/22/1996
5465517	Safety catch for underwater guns A safety catch in particular for underwater guns or the like, comprises movable means for locking the travel of a trigger for activation of means of firing a projectile element. In oder to avoid direct, visual checking of the condition of the safety catch...	11/14/1995
5212343	Water reactive method with delayed explosion Devices and methods are disclosed for contacting a hot reaction mass with water to initiate an explosive reaction. The reaction mass comprises a ceramic or intermetallic material that is produced by exothermically reacting a mixture of reactive elements. ...	05/18/1993
4894940	Light projecting speargun An improvement in spearguns. A light is incorporated inside the speargun barrel to improve the field of sight for the spearfisherman. The light focuses on the area the spear is aiming at without interferring with the shot or increasing the drag through th...	01/23/1990
4854238	Shark projectile A projectile having a tubular projectile body and provided with pointed fins pivotally mounted at the front end of the projectile body. The head fins expand when the projectile strikes a target shark to prevent the projectile from passing clear through th...	08/08/1989
4848209	Sealing or driving apparatus for work underwater The apparatus, provided for undersea work, includes a barrel holder, a barrel for guiding a fastener intended to be driven by the gases of a propulsive charge and a percussion system for setting off the charge. The percussion system includes a striker, a ...	07/18/1989
4823492	Expendable explosive head for spear gun An expendable explosive accessory device to be placed on the forward tip of a spear for underwater fishing which includes a molded plastic outer tubular receiver having a forward closed end, a rearward open end, and an interior cavity to receive an explos...	04/25/1989
4821441	Multishot underwater survival gun An underwater gun comprises a multi-chambered head attached to a long handle. The handle includes a rotatable section connected to the head to manually index the cylinder, sequentially chamber by chamber, into the firing position. Spring urged arms retain...	04/18/1989
4774887	Underwater powerhead An underwater powerhead which consists of an outer barrel which houses an explosive cartridge. This powerhead slips over a pointed spear tip and is ready to use immediately. The point of the spear tip acts as a firing pin to activate or "fire" the cartrid...	10/04/1988
4757628	Shark saber A trigger fired underwater firearm particularly adapted to defense against sharks is described. The firearm has an elongated tubular handle with a cartridge receiving head at one end, a trigger mechanism in the middle, and a safety mechanism at the other ...	07/19/1988
4742775	Power load for underwater spear gun A power load for use with an underwater spear gun including a casing, explosive material within the casing, the casing having one closed end adapted to open when the explosive material explodes. The closed end is sealed with a sealing compound to prevent ...	05/10/1988
4651454	Spear gun having gas sealing means A spear gun and a power load for use therewith, the spear gun including a breech, a barrel fixed to the breech, and a spear adapted to be received by a bore within the barrel. The breech includes a chamber for receiving an explosive power load, the chambe...	03/24/1987
4644930	Gun for firing a variety of projectiles A gun is provided which is capable of firing a variety of projectiles driven by a variety of propellants. The barrel may be readily disconnected from the stock of the gun. The breech is designed to receive a standard gauge shotgun shell. Inserts are also ...	02/24/1987
4324310	Seismic apparatus A high resolution seismic data acquisition system is made up of an electronically-fired shotgun source integrally connected to a detector-recording means displaced from the shotgun source....	04/13/1982
4266358	Underwater firearm An underwater firearm for discharging self-propelled projectiles incorporates a swing arm for simultaneously loading a projectile from a magazine into the firing chamber and cocking the firing pin. Guide means in the firing chamber automatically engages a...	05/12/1981
4122621	Underwater repeating spear gun A repeating spear gun for firing self-propelled spears, the spear gun having a magazine comprising a plurality of spear firing chambers disposed as radial sets of firing chambers, and a bolt having a plurality of firing pins, each firing pin aligned with ...	10/31/1978
4100855	Underwater power head A Power head for a fishing spear comprising a chamber to house an explosive cartridge open at one end, and a firing mechanism detachably secured to the other end of the chamber, said mechanism comprising a cylinder having two pistons slidably mounted ther...	07/18/1978
4100692	Underwater protection device An open ended, cylindrical barrel which carries a shell, is pushed into a housing until a single cam passes the position of a shoulder, whereupon the barrel may be twisted to lock it in position. A firing pin is spring pressed and presses slightly against...	07/18/1978
4077147	Underwater side arm 1. A device including an expendable cartridge-barrel assembly comprising a cartridge casing forming a barrel, the wall thickness of said barrel being at least equal to about the diameter of the bore therein, a retainer affixed to and rearwardly of said ca...	03/07/1978

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Class 42/1.14 - UNDERWATER TYPE