To Store Pressure In Valved Container Patents (Class 124/69)
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Patent number: 6170477Abstract: 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 retracted position. A retaining means (41) is provided for releasably retaining the piston (35) in the retracted position. A source of compressible fluid such as air is contained in a reservoir (59) and is arranged to undergo compression upon movement of the piston (35) into the retracted position and to propel the piston along the barrel (27) from the retracted position upon release of the piston thereby to propel the spear (13). A control means is provided for selectively increasing the pressure of the compressible fluid for varying the propulsive force applied to the piston (35). The control means includes a cylinder (43) forming part of the resevoir (59) and having a second piston (45) slidingly and sealingly mounted therein.Type: GrantFiled: February 25, 1999Date of Patent: January 9, 2001Inventor: Nicolas James Horlock
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Patent number: 6151824Abstract: A gun projects matter from a discharge port, such as a barrel or nozzle, that is movably carried, so that the direction of discharge is variable with respect to the body of the gun. A manual direction controlling mechanism may be implemented for the movable discharge port, whereby the variable direction of discharge is directly controlled by a user, or an automatic direction controlling mechanism may be implemented such that the direction of the movable discharge port is automatically varied in response to the operation of a discharge actuating mechanism of the gun. Multiple discharge ports, capable of aiming in multiple directions simultaneously, may be incorporated to facilitate the projection of liquid or solid projectiles toward multiple or moving targets.Type: GrantFiled: September 2, 1997Date of Patent: November 28, 2000Inventor: Richard A. Clayton
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Patent number: 6003503Abstract: A fluid pulsator for a compressed gun (10) or water gun (30) is provided having a housing (404) with a fluid inlet (409) and a fluid outlet (410), an internal tube (405) reciprocally mounted within the housing, and a sealing member (406) reciprocally mounted to the internal tube. The housing and internal tube define a rearward fluid pressure chamber (412) and a forward fluid pressure chamber (413). The pulsator also has a variable flow fluid control valve which varies the flow of fluid passing into the forward fluid pressure chamber to regulate the action of the pulsator. The sealing member has a sealing head (431) having a first portion (432) sized and shaped to overlap the housing about the fluid outlet and a second portion sized and shaped to be received within the fluid outlet.Type: GrantFiled: December 29, 1997Date of Patent: December 21, 1999Assignee: Johnson Research & Development Company, Inc.Inventors: Lonnie G. Johnson, John T. Applewhite
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Patent number: 6000386Abstract: A fluid pulsator for a compressed gun (10) or water gun (30) is provided having a housing (604) with a fluid inlet (607) and a fluid outlet (608), an internal tube (605) reciprocally coupled to the housing, and a sealing member (606) reciprocally mounted to the internal tube. The housing and internal tube define a rearward pressure chamber (632) and a forward fluid pressure chamber (631). The fluid pulsator also has means for actuating the movement of the sealing member that can be manually manipulated to vary the actuation rate of the pulsator.Type: GrantFiled: October 19, 1998Date of Patent: December 14, 1999Assignee: Johnson Research & Development Company, Inc.Inventors: Lonnie G. Johnson, John T. Applewhite
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Patent number: 5913304Abstract: An air compressed gun (10) is provided having a pressure chamber (35), a moveable magazine (18) and a conduit conveying pressurized air from the pressure chamber to the magazine. The conduit has a resilient sealing gasket (42) which is reconfigurable between a relaxed configuration and an expanded configuration with the presence of pressurized air.Type: GrantFiled: May 27, 1997Date of Patent: June 22, 1999Assignee: Johnson Research & Development Co., Inc.Inventor: Lonnie G. Johnson
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Patent number: 5881706Abstract: A toy rocket launcher for launching a common bottle such as a plastic two liter beverage bottle in the air with pneumatic pressure. The toy rocket launcher includes a support stand having a top member and a plurality of support legs downwardly depending from the top member. The top member has a hole through which the upper end of a conduit is upwardly extended. An end of a hose is coupled to a lower end of the conduit to fluidly connect the hose to the conduit. A pneumatic pump is attached to a second end of the hose for pumping air into the hose. The upper end of the conduit is inserted into an opening in the neck of an inverted beverage bottle.Type: GrantFiled: September 3, 1998Date of Patent: March 16, 1999Inventor: William C. Carson
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Patent number: 5878734Abstract: An air compressed gun (210) is provided having a stock (211), multiple barrels (212), a trigger (213) and a manual air pump (214). A pressure chamber (216) and release valve (217) is coupled to each barrel which is controlled by the trigger.Type: GrantFiled: September 25, 1997Date of Patent: March 9, 1999Assignee: Johnson Research & Development Company, Inc.Inventors: Lonnie G. Johnson, John T. Applewhite, Jeffrey Shane Matthews
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Patent number: 5878735Abstract: An air compressed gun (10) is provided having a stock (11), a barrel (12), a trigger (13) and a manual air pump (14). The gun also has a mounting tube (201) configured to be received within the tail bore (203) of a projectile (P) and a barrel (200) in which the projectile is positioned for launching. The mounting tube has a tapered air exit end (210), a safety bar (211) and safety vents (220). The barrel has an elongated slot (217) for venting compressed air.Type: GrantFiled: September 29, 1997Date of Patent: March 9, 1999Assignee: Johnson Research & Development Company, Inc.Inventor: Lonnie G. Johnson
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Patent number: 5787869Abstract: An air compressed gun (10) is provided having a stock (11), a barrel (12), a trigger (13) and a manual air pump (14). The gun also has a mounting tube (201) configured to be received within the tail bore (203) of a projectile (P) and a barrel (200) in which the projectile is positioned for launching. The mounting tube has a tapered air exit end (210) and a safety bar (211). The barrel has an lelongated slot (217) for venting compressed air.Type: GrantFiled: February 11, 1997Date of Patent: August 4, 1998Assignee: Johnson Research & Development Corp., Inc.Inventors: Lonnie G. Johnson, John T. Applewhite, Shane Matthews
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Patent number: 5709199Abstract: An air compressed gun (10) is provided having a stock (11), a barrel (12), a trigger (13) and a manual air pump (14). The gun also has a magazine (18) having a series of barrels (26) for holding several projectiles (P). An actuator (50) indexes the magazine with each shot of the gun and automatically controls bursts of pressurized air. The magazine has a mounting plate (25) with two concentric annular arrays of opening (28). A sealing plate (38) is configured to seal one opening with each sequential indexing of the magazine.Type: GrantFiled: October 21, 1996Date of Patent: January 20, 1998Assignee: Johnson Research & Development Co., Inc.Inventors: Lonnie G. Johnson, John T. Applewhite
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Patent number: 5701879Abstract: An air compressed gun (10) is provided having a stock (11), a barrel (12), a pressure chamber (16), a pressure actuatable release valve (18) and a manual air pump (14). The pump has an elongated cylinder (25) having a port (38) in fluid communication with the release valve, and a plunger (26) telescopically mounted for reciprocal movement within the cylinder. The plunger has an O-ring type seal (31). The forward movement of the plunger seal towards the port pressurizes air within the cylinder which is transferred to the release valve and pressure chamber. The continued movement of the plunger seal past the port causes a portion of the pressurized air to be released so as to actuate the pressure actuatable release valve to release the pressurized air within the pressure chamber into the barrel.Type: GrantFiled: May 26, 1995Date of Patent: December 30, 1997Assignee: Johnson Research & Development Company, Inc.Inventors: Lonnie G. Johnson, John Applewhite
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Patent number: 5699780Abstract: A hydraulic speargun has an elongated elastomeric bladder for charging the gun. One end of the bladder selectively communicates with the breech chamber at the end of the gun barrel. The other end of the bladder is connected to a pump for inflating the bladder with water under pressure. A plug and dart assembly is breech loaded into the barrel. A trigger opens a valve to release the water pressure into the breech chamber. The pressure forces the spear ended dart portion of the plug and dart assembly to separate from the breech plug end and the dart portion is launched out the muzzle end of the barrel by the force of the water. A lanyard is attached between the breech plug end and the dart end and is coiled around the plug end. As the dart portion travels from the muzzle, the lanyard is deployed through the muzzle end of the barrel.Type: GrantFiled: June 17, 1996Date of Patent: December 23, 1997Inventor: Laurent C. Bissonnette
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Patent number: 5699781Abstract: An air compressed gun (159) is provided having a stock (11), a barrel (12), a trigger (13) and a manual air pump (14). The gun also has a magazine (18) having a series of barrels (26) for holding several projectiles (P). An actuator (161) indexes the magazine with each shot of the gun and automatically controls bursts of pressurized air. The actuator has a manifold (162) having an inlet opening (163), an outlet opening (164) and a firing opening (166), and a piston (168) mounted within the manifold which directs the flow of air therethrough for sequential firing.Type: GrantFiled: August 19, 1996Date of Patent: December 23, 1997Assignee: Johnson Research & Development Company, Inc.Inventors: Lonnie G. Johnson, John T. Applewhite
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Patent number: 5690091Abstract: A projectile assembly for use in a breech loading hydraulic speargun. The assembly consists of a dart connected to a plug end. The assembly is inserted into the breech end of the speargun barrel with the plug end sealing the breech end of the barrel. A trigger mechanism on the speargun releases water under pressure into the barrel at the location of the connection between the dart and the plug. The dart separates from the plug and is ejected out the muzzle end of the barrel. A lanyard is attached between the plug remaining in the barrel and the dart and the lanyard is payed out through the barrel as the dart travels to its target. The plug end is removable from the barrel and is made buoyant for convenient retrieval of the dart.Type: GrantFiled: June 17, 1996Date of Patent: November 25, 1997Inventor: Laurent C. Bissonnette
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Patent number: 5653216Abstract: A toy rocket launcher (100) is disclosed for launching a rocket (125) having a fuselage (126) with an elongated tail bore (127) extending from a tail end thereof. The rocket launcher has a launch tube (108) adapted to hold and maintain a selected, elevated pressure level. The launch tube has an opening (109) therein and a valve for controlling the flow of pressurized air flowing from the launch tube through the opening. The launcher also includes a pump (103) for pressurizing the launch tube and a trigger (104) for controlling the launch tube valve.Type: GrantFiled: March 20, 1995Date of Patent: August 5, 1997Assignee: Johnson Research & Development Co, Inc.Inventor: Lonnie G. Johnson
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Patent number: 5626123Abstract: An air compressed gun (10) is provided having a stock (11), a barrel (12), a trigger (13) and a manual pump (14). The manual pump is coupled to a swivel joint (31) which provides pivotal movement of the pump relative to the barrel so as to allow for a variety of gun configurations and uses.Type: GrantFiled: April 27, 1995Date of Patent: May 6, 1997Assignee: Johnson Research & Development Co., Inc.Inventors: Lonnie G. Johnson, John Applewhite
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Patent number: 5617837Abstract: An air gun includes a pressure relief valve in the pump piston for relieving excess air pressure. The valve is movably mounted on the piston for movement between a closed position in which the valve seals the pressure release opening in the piston and an open position in which air can flow through the pressure relief opening in the piston. A biasing mechanism is also provided for resiliently biasing the valve towards the closed position.Type: GrantFiled: May 16, 1994Date of Patent: April 8, 1997Assignee: Crosman CorporationInventor: Franz Momirov
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Patent number: 5596978Abstract: An air compressed gun (10) is provided having a stock (11), a barrel (12), a trigger (13) and a manual air pump (14). The gun also has a magazine (18) having a series of barrels (26) for holding several projectiles (P). An actuator (50) indexes the magazine with each shot of the gun and automatically actuates a release valve (36) which controls the firing of the gun.Type: GrantFiled: May 15, 1995Date of Patent: January 28, 1997Assignee: Johnson Research & Development Co, Inc.Inventors: Lonnie G. Johnson, John Applewhite
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Patent number: 5592931Abstract: An air compressed gun (70) is provided having a housing (71), a magazine (75) having multiple barrels (89) for holding projectiles, and a manual air pump (76). The gun also has a pneumatic indexer (82) which indexes the magazine for firing with each shot of the gun and a harness (77) which enables the magazine to be supported adjacent the head of a person.Type: GrantFiled: June 26, 1995Date of Patent: January 14, 1997Assignee: Johnson Research & Development Co, Inc.Inventors: Lonnie G. Johnson, John Applewhite
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Patent number: 5553598Abstract: A plunger (34) directs pumped fluid through a conduit (40) into a piston sleeve (60) having a piston (66) that is reciprocally translatable within the piston sleeve (60). The conduit (40) terminates in a nozzle (49) which projects into one end, a posterior end, of the piston sleeve (60). The piston sleeve (60) also has a fluid passageway (62) connected with a fluid reservoir (50). A second nozzle (58) at the opposite end, an anterior end, of the piston sleeve (60) leads to a fluid passageway upon which a toy projectile (11) or similar object may be mounted. The piston (66) which is slidable within the piston sleeve (60) has a head (68, 69) at each end formed of compressible material such as soft rubber. A turret (70) enables several mounts (72) for toy projectiles (11) to be consecutively aligned for launching.Type: GrantFiled: April 6, 1994Date of Patent: September 10, 1996Assignee: Johnson Research and Development Co., Inc.Inventors: Lonnie G. Johnson, John T. Applewhite
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Patent number: 5515837Abstract: The present invention relates to a safety mechanism for multi-shot air guns having a main housing, a barrel, a launch port located at the barrel of the main housing and adapted for air pressure connection to an aligned nozzle and having a pressurization mechanism and a release for releasing pressure from the launch port to an aligned nozzle and having a multi-shot projectile magazine capable of having one nozzle aligned with the launch port and being advanceable to provide sequential alignments of nozzles for firings of a plurality of projectiles. Each nozzle includes an impediment member contained therein. The safety mechanism includes one or more valves connected to either the launch port or each of the nozzles, to prevent flow of pressurized air into the nozzles when closed and to allow flow of pressurized air when opened; a biasing device for biasing the valve to a closed position; an opening device movably located within the nozzle.Type: GrantFiled: June 20, 1994Date of Patent: May 14, 1996Assignee: Larami CorporationInventors: Ku I. Nin, Bruce M. D'Andrade
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Patent number: 5448984Abstract: A toy that selectively shoots (1) a compressible ball, (2) a compressible ball and a water spray, (3) a water spray and (4) a water stream comprises a tank adapted to contain air and water under pressure, a pump for pumping air into the tank, a discharge valve having an inlet and an outlet, a water supply conduit leading from the tank to the discharge valve inlet and an air supply conduit leading from the tank to the discharge valve inlet. A cap or other device is provided for selectively opening and closing the air supply conduit so as to permit or prevent, respectively, air from flowing from the tank to the discharge valve. A ball magazine defines an air pressure chamber that receives a compressible ball and has an opening that is smaller than the ball so that the ball is discharged through the opening only when a predetermined force due to air pressure in the chamber is applied to it, whereupon the ball is deformed and is discharged from the magazine.Type: GrantFiled: August 19, 1993Date of Patent: September 12, 1995Assignee: Lanard Toys LimitedInventor: Virginio Brovelli
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Patent number: 5381778Abstract: The present invention involves a pressurized air propelled rocket and rocket launcher toy device. The launcher has a housing which includes a vessel for holding pressurized air therein, an inlet to the vessel and an outlet from the vessel. Also, the housing has a jet tube extending from the outlet and adapted to connect with a rocket. A pump is connected to the vessel inlet of the housing, the pump is connected for and capable of pumping air into the vessel at a pressure sufficient to launch the rocket assembly. A one way valve is connected to the pump and permits the flow of air only from the pump to the vessel. There is a rocket double action, rapid fire release mechanism located in the housing with a first valve which, when released, causes a decrease in pressure to cause a second valve to open. The opening of the second valve releases pressurized air into the rocket to launch it. In preferred embodiments, there is also included a safety mechanism to prevent horizontal or lateral launching.Type: GrantFiled: July 2, 1993Date of Patent: January 17, 1995Inventors: Bruce M. D'Andrade, Lonnie G. Johnson
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Patent number: 5373833Abstract: The present invention is a projectile-shooting air gun. It includes a main housing having a barrel adapted for receiving a projectile, a handle and a trigger, as well as a high pressure, inflatable bladder connected to the main housing, the bladder having an inlet and an outlet. There is also a pressurizing mechanism for providing air pressure to the bladder to inflate it. The pressurizing mechanism is physically connected to the housing and functionally connected to the bladder inlet. There is a bladder deflation valve having an upstream side and a downstream side, and it is connected to the bladder outlet at the valve's upstream side, and is connected to the trigger for opening and closing thereof, and is connected to a projectile launch tube at the valve's downstream side for launching a projectile upon deflation of at least a portion of the bladder when it has been inflated.Type: GrantFiled: July 12, 1993Date of Patent: December 20, 1994Inventor: Bruce M. D'Andrade
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Patent number: 5373832Abstract: The present invention is a multiple projectile-shooting air gun. It includes a main housing having a barrel adapted for receiving a projectile, a handle and a trigger, as well as a high pressure, inflatable bladder connected to the main housing, the bladder having an inlet and an outlet. There is also a pressurizing mechanism for providing air pressure to the bladder to inflate it. The pressurizing mechanism is physically connected to the housing and functionally connected to the bladder inlet. There is a bladder deflation valve having an upstream side and a downstream side, and it is connected to the bladder outlet at the valve's upstream side, and is connected to the trigger for opening and closing thereof, and is connected to a projectile launch port at the valve's downstream side for launching a projectile upon deflation of at least a portion of the bladder when it has been inflated.Type: GrantFiled: July 12, 1993Date of Patent: December 20, 1994Inventor: Bruce M. D'Andrade
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Patent number: 5363834Abstract: A gun having a first mode of operation for propelling the projectile by compressed gas contained within a cartridge and a second mode of operation for propelling the projectile by air compressed by a self contained pumping mechanism. A switching system is provided for switching between the first and second modes. The switching system includes a valve having a first position corresponding to the first mode of operation and a second position corresponding to the second mode of operation. The first position allows compressed gas from the cartridge to propel the projectile and the second position prevents compressed gas from the cartridge from propelling the projectile and allows the projectile to be propelled by compressed air from the pumping mechanism. A switch member is provided for positioning the valve in the first and second positions. The switch member is capable of being actuated by the gun operator to switch the gun between the first and second modes.Type: GrantFiled: March 30, 1993Date of Patent: November 15, 1994Assignee: Daisy Manufacturing Company, Inc.Inventor: William R. Stuchlik
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Patent number: 5343849Abstract: A rapid fire ball gun includes a hollow body supporting a pressurizable air vessel and an air pump coupled thereto through a check valve. An elongated cylindrical barrel is supported by the body and defines a cylindrical ball chamber having a plurality of spaced intermediate fields forming ball spaces therebetween and a final seal at the extending end of the cylindrical barrel. A plurality of compressible foam balls are received within the ball spaces between the intermediate seals with the outermost ball being received in a ball spaced defined between the final seal and the most forward intermediate seal. The cylindrical barrel is coupled to the pressurizable air vessel by a trigger valve mechanism which responds to trigger pressure by coupling the pressurized air within the air vessel to the barrel thereby expelling one or more of the compressible foam balls from the barrel.Type: GrantFiled: August 17, 1992Date of Patent: September 6, 1994Inventor: Michael Steer
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Patent number: 5341790Abstract: A gun can be powered by a cartridge of pressurized gas or by pressurized air. The gun includes a valve body which provides a pressure reservoir for storing pressurized gas or air. When the gun is fired, pressurized gas or air is discharged from the pressure reservoir and propels a projectile out of the barrel of the gun. An air pump is mounted on the gun for supplying pressurized air to the pressure reservoir. An adapter assembly is mounted on the gun for holding a cartridge of compressed gas. The adapter assembly includes an adapter housing and a plunger which is slidably mounted in the adapter housing. The plunger is movable between a sealing position in which the plunger sealingly engages the adapter housing and an exhaust position in which pressurized gas or air from the pressure reservoir can flow out of the adapter housing. The plunger is maintained in the sealing position by a gas cartridge or by a plug which can be screwed into the adapter housing.Type: GrantFiled: January 27, 1992Date of Patent: August 30, 1994Assignee: Crosman CorporationInventor: Gary F. Ebert
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Patent number: 5224465Abstract: An air gun includes a valve assembly with a sliding baffle for limiting the maximum velocity and energy which can be provided by the gun. The valve assembly includes a valve body which has a pressure reservoir, an air passage, and a valve seat between the pressure reservoir and the air passage. A valve normally closes the valve seat to hold pressure in the pressure reservoir and is moved away from the valve seat when the gun is fired. A bleed opening in the valve body connects the air passage to the outside of the valve body, and an exhaust opening connects the air passage to the barrel of the gun. The baffle is slidably mounted in the air passage and is movable between a first position in which the bleed opening is restricted and the exhaust opening is unobstructed and a second position is which the exhaust opening is restricted and the bleed opening is substantially unobstructed.Type: GrantFiled: March 6, 1992Date of Patent: July 6, 1993Assignee: Crosman CorporationInventor: Keith L. Milliman
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Patent number: 5197452Abstract: The present invention involves a liquid jet propelled transporter and launcher toy. The launcher has a housing with a reservoir for holding a predetermined amount of liquid therein less than the volume of a transporter container and related to that volume. There is a reservoir fill port and cap to enable a user to fill the reservoir and close it. The launcher has a jet tube receiver adapted to receive a jet tube of a transporter. A pump is connected to the housing with a manually actuated pump and a one way valve from the pump to the reservoir. There is a transporter latch mechanism located on the housing and a release for releasing the latch mechanism so as to launch a transporter. The transporter includes a container for receiving liquid from the reservoir of the housing and a jet tube extending from the container which is adapted to fit onto the jet tube located in the housing.Type: GrantFiled: February 3, 1992Date of Patent: March 30, 1993Inventors: Lonnie G. Johnson, Bruce M. D'Andrade
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Patent number: 5154157Abstract: A compressed air gun comprises a plastic casing, in which a low-pressure cylinder is arranged beneath the gun barrel and a high-pressure cylinder is arranged behind the barrel, with a pressure release system between the cylinders. Two pistons are contained within the respective cylinders and are connected to a cocking lever each by a separate hinge rod. A series of catches and releases requires all operative steps to be completed in the correct sequence before firing to prevent overloading of the air pressure system and also to prevent accidents.Type: GrantFiled: October 19, 1989Date of Patent: October 13, 1992Assignee: Sony CorporationInventor: Peter Goepfert
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Patent number: 4951644Abstract: A pneumatic launcher for instrumented objects includes a barrel, a breech mber having a compressed gas reservoir, a pneumatic piston operated valve for discharging gas from the reservoir into the barrel and is characterized by a fail-safe venting feature and a throttling valve for automatically limiting acceleration of the launched object.Type: GrantFiled: April 30, 1984Date of Patent: August 28, 1990Assignee: The United State of America as represented by the Secretary of the NavyInventor: David R. Bon
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Patent number: 4928661Abstract: A cocking device for a compressed air weapon employing pre-compressed air, wherein a cocking member acts on a compression piston via an articulated linkage, wherewith the articulated linkage is in the form of a six-point articulated linkage configured such that the cocking member is swingably mounted to the firing system via the first articulation point, and has a link member swingably connected to it at a second articulation point borne on said cocking member, wherewith the other end of the link member engages one end of a rod (which is a piston rod or piston plunger) which rod bears a fourth articulation point via which it engages a toggle arm the other end of which toggle arm is connected to the said firing system via a fifth articulation point, and wherewith the sixth articulation point is provided either on the other end of the piston-rod or piston-plunger rod or on the bottom of the cylinder of the pressure-producing piston-and-cylinder device.Type: GrantFiled: March 17, 1989Date of Patent: May 29, 1990Assignee: J. G. Anschuetz GmbHInventors: Wolfgang Bordt, Friedrich Gerstenberger
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Patent number: 4844046Abstract: An improved operating mechanism for an air gun is disclosed which features an attenuation element interposed between the operating level and the other elements of the gun. The attenuation element may comprise a single acting gas spring, such that the operating lever is prevented from violent motion returning it to the open position upon release during the closing movement from the open to the closed position, but in which movement of the lever from the open to the closed position is not impeded by the attenuation element.Type: GrantFiled: February 22, 1988Date of Patent: July 4, 1989Assignee: J. G. Anschutz GmbHInventor: Dieter Straub
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Patent number: 4807586Abstract: A jet water gun comprises a hollow gun handle connected to a gun body having a cleanser chamber and a water passage. An expandable envelope in the chamber is connected to a valve through which water flows into the envelope to cause it to expand. Upon expansion, the envelope pressurizes the cleanser to make it flow out of the chamber. The cleanser flowing from the chamber is forced out of the gun together with a jet of water.Type: GrantFiled: June 9, 1987Date of Patent: February 28, 1989Assignee: Hung Mei Brush Co., Ltd.Inventor: Aqee Kao
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Patent number: 4572152Abstract: An air-gun in which the main cylinder and piston assembly providing the compression of the air for the projection of the shot is associated with another compensating assembly of cylinder and piston, this compensating assembly of piston and cylinder being located in the body of the main piston itself or in a chamber communicating with the main cylinder and comprising a piston free to move within the corresponding cylinder which latter is in communication at one end with the main cylinder and is closed at the other end.Type: GrantFiled: October 6, 1982Date of Patent: February 25, 1986Inventors: Sigfrid M. Olofsson, Chester H. Wickenberg
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Patent number: 4429677Abstract: A mouth-blown pneumatic system for launching disks used to play games, and the like, which includes a hollow housing having an air reservoir therein, a hose with one end connected to the air reservoir and the other end connected to a mouthpiece for blowing air thereinto, a disk launching chamber, a disk launching ramp within the disk launching chamber, a baffle inside the housing separating the air reservoir and the disk launching chamber, and a manually-operable valve for controlling the flow of air from the air reservoir to the disk launching chamber.Type: GrantFiled: November 2, 1981Date of Patent: February 7, 1984Inventor: Ernest C. Moore
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Patent number: 4336787Abstract: The present invention provides an improved weapon such as a rifle or a pistol including a system of levers that are displaceable laterally towards the front part of the weapon for operating structure for the intake and compression of the compression air used in the weapon. The barrel for the weapon is axially displaceable on a slide by utilizing the displacement of the piston for the intake and compression of air. Sealing structure is provided on the breach of the barrel in the form of a tablet-shaped packing that also insures the correct insertion of the ammunition.Type: GrantFiled: July 21, 1980Date of Patent: June 29, 1982Inventor: Giacomo Cagnoni
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Patent number: 4304213Abstract: A pressure relief valve for an air gun limits the maximum muzzle velocity of the gun without losing an excessive amount of pressure. The valve includes a valve housing which is provided with an intake orifice, a chamber, and a discharge orifice. A check valve in the chamber normally closes the intake orifice. The intake orifice communicates with the pressure reservoir of the gun, and, when excessive pressure builds up within the pressure reservoir, the check valve opens to relieve the excess pressure.Type: GrantFiled: March 14, 1980Date of Patent: December 8, 1981Assignee: The Coleman Company, Inc.Inventor: James R. Jereckos
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Patent number: 4038961Abstract: A pneumatic rifle and hand gun for discharging a projectile under the influence of a source of compressed gas such as air. The pressurization of the source is achieved by with pressure increasing mechanisms which compress atmospheric air in two separate stages using a single cocking or pumping action of the rifle or hand gun. The rifle and hand gun are provided with a recoil compensation device to eliminate recoil of the rifle and hand gun during discharge of the projectile. The compression of the atmospheric air to provide the source of high pressure is achieved through a novel piston and cylinder arrangement which pressurizes the gas during pumping or cocking action of the rifle or hand gun. A further mechanism provides for a projectile discharged from the rifle or hand gun to be subjected to constant pressure during discharge thereof.Type: GrantFiled: August 22, 1975Date of Patent: August 2, 1977Assignee: Dahltron CorporationInventor: Sigfrid M. Olofsson
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Patent number: 3999533Abstract: A novel adapter handle is attached to the existing pumping handle of an air rifle to increase the pumping leverage. The adapter handle has a forward portion which is disposed beneath and is attached to the existing pumping handle and a rear portion disposed to one side of the existing trigger guard. The rear portion includes cut-outs around the trigger guard providing finger clearance to the trigger and safety. The rear portion terminates in a hand grip which is grasped by the user to pump the rifle.Type: GrantFiled: December 29, 1975Date of Patent: December 28, 1976Inventor: Harry F. Buckner