British merchant Peter Durand invented the tin can in 1810.
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| Number | Title | Issue Date |
| 7318428 | Paint ball gun having paint ball dispenser with threaded connector A paint ball gun is disclosed including a dispenser having a locking connector designed to lockingly engage a locking connector on a gun feed tube or one end of a hollow connecting member. ... | 01/15/2008 |
| 7275530 | Paintball gun A removable air bleed assembly for use with between a paintball gun and an auxiliary system includes a pin having an elongated pin channel extending through a majority of the pin to bleed pressurized air from the paintball gun. An air conduit is coupled between and ... | 10/02/2007 |
| 7121272 | Paintball gun having an in-line pneumatic assembly A paintball gun preferably includes a compressed gas storage chamber, a bolt, and a firing valve all arranged in a longitudinal chamber of the paintball gun. The bolt preferably includes a first and a second surface area. One of the two bolt surface areas is prefera... | 10/17/2006 |
| 6923170 | Paint ball gun having a combined hopper/feeder A paint ball gun magazine or a combined hopper/feeder apparatus is disclosed, where the magazine includes a closing assembly designed to allow the magazine to transition between a closed state and an open state and to a paint ball including a closable magazine. A pa... | 08/02/2005 |
| 5839422 | Automatic feeder for projectile gun using compressed gas A portable automatic projectile loading device for use with a gun-like apparatus typically utilizing compressed gas to fire projectiles. The device being capable of storing up to 1000 projectiles which are conveniently carried by the user in a coiled flex... | 11/24/1998 |
| 5832911 | Less lethal weapon attachable to lethal weapon A weapon comprising a combination lethal weapon and less lethal gas-powered weapon mounted below the lethal weapon. The less lethal weapon which fires projectiles is independently operable when dismounted and includes a bolt, gas supply and magazine featu... | 11/10/1998 |
| 5724955 | Voice activated compressed air toy gun 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 magazi... | 03/10/1998 |
| 5709199 | Rapid fire compressed air gun 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 magazi... | 01/20/1998 |
| 5673679 | Paint ball gun feed tube The feed tube for the gun has an inlet with an outlet transverse to the inlet and which is adapted to be coupled to the ball inlet of the gun barrel. The feed robe wall opposite the outlet effectively is closed. The feed tube also has a gas outlet in the ... | 10/07/1997 |
| 5596978 | Rapid fire compressed air gun 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 magazi... | 01/28/1997 |
| 5592931 | Compressed air gun with magazine indexer 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 ... | 01/14/1997 |
| 4765618 | Table tennis robot A table tennis robot with right and left servers, oscillatory motion, top spin and bottom spin, right and left side spin, combination of spins, or no-spin modes, variable ball speeds, and continuous recycling of balls, to provide a human player with chall... | 08/23/1988 |
| 4741537 | Teeing device An apparatus for semiautomatically teeing up golf balls utilizing very low air pressure as an operating medium. Balls are loaded onto a contoured dish at the upper end of an open ended upright cylinder and pass from the dish into a flexible tube wrapped h... | 05/03/1988 |
| 4735405 | Table tennis practice aid A table tennis training apparatus adapted to be attached to a table tennis table and which apparatus ejects balls towards a user. The apparatus has a plurality of ball projection tubes, each communicating with a source of compressed air. The tubes include... | 04/05/1988 |
| 4559918 | Ball-throwing device with ball throwing heads and ball conveying system including Y-junction Balls such as table tennis balls or tennis balls are continuously fed to two pairs of adjacent flanged rollers of a ball-throwing head by a blower and two transfer ducts. Balls hit by the player are collected by a net and a trough, then fed back to the he... | 12/24/1985 |
| 4325351 | Coacting wheel ball emitting device of tennis training system A tennis ball emitting or serving device includes a ball emitting cylinder having controllable horizontal and vertical angles. The ball is driven by contact with the peripheral surfaces of rotating ball emitting wheels or pulleys. To impart various direct... | 04/20/1982 |
| 4299383 | Tennis training device A tennis training device having ball emitting cylinder for cylically emitting tennis balls to a player's side, a ball collecting device for collecting tennis balls hit by a player, a ball control device for controlling horizontal and vertical angles of th... | 11/10/1981 |
| 4288074 | Apparatus for conveying tennis balls to a ball-throwing machine The apparatus comprises a wall (7) from which tennis balls (13) fall into a chute (8) fitted with lateral ramp sections (15, 16). The balls are carried along the chute by an endless conveyor (14) fitted with ball-entrainment (14). The balls are guided dow... | 09/08/1981 |
| 4280697 | Tennis training device A tennis training device having a ball emitter including a ball emitting cylinder is disclosed. In this case, a device is provided for controlling horizontally and vertically inclined angles of the ball emitting cylinder. This controlling device is compos... | 07/28/1981 |
| 4185824 | Ball launcher with finger spin loading An arcade amusement gun for pneumatically shooting rubber balls toward a hollow target from which the balls are automatically returned to the gun, including apparatus for automatically loading one ball at a time from beneath the gun into the gun breech an... | 01/29/1980 |
| 4137893 | Riot control weapon A riot control weapon using air pressure to eject inexpensive projectiles om its muzzle. Its velocity, range and impact is adjustable by an air regulator between the compressed air supply and the trigger actuated air valve to suit the needs of the situati... | 02/06/1979 |
| 4116438 | Table tennis robot Table tennis balls are pushed by a rotated, notched, feed disc from a hopper to a pair of rotated throwing discs which move each ball along either an adjustable, spin producing, bottom guide or an adjustable, spin producing, upper guide. Thrown balls hit ... | 09/26/1978 |
| 4112911 | Ball collector and projector apparatus Apparatus that collects and transports generally spherical objects, such as tennis balls, and recycles them to a practice device that propels the balls to a tennis player for practice or recreation. Balls are fed one at a time to a chamber from whence the... | 09/12/1978 |
| 4108432 | Tennis ball collection, pick-up and propelling system A tennis ball retrieving and propelling device for placement on a surface having a ball delivery tube and a carrousel type ball retriever positioned below the ball delivery tube for receiving balls to be pneumatically transported to the ball delivery tube... | 08/22/1978 |
| 4083349 | Rapid-fire, fluid actuated B.B. gun A rapid-fire B.B. pellet-type machine gun operated from a source of gas propellant preferably a canister of liquefield gas, has a trigger-operated valve releasing propellant gas from the source to a pellet containing magazine for projecting the pellets in... | 04/11/1978 |
| 4077386 | Ball projecting apparatus Table tennis balls are pushed by a rotated, notched, feed disc from a hopper to a pair of rotated throwing discs which move each ball along either an adjustable, spin producing, bottom guide or an adjustable, spin producing, upper guide. Thrown balls hit ... | 03/07/1978 |
| 4046131 | Tennis ball collection, pick-up and propelling system A tennis ball retrieving and propelling device for placement on a surface having a ball delivery tube and a carrousel type ball retriever positioned below the ball delivery tube for receiving balls to be pneumatically transported to the ball delivery tube... | 09/06/1977 |
| 4021037 | Tennis practice machine Apparatus for collecting a projectile such as a tennis ball and launching it through the air is disclosed. The apparatus includes a conduit having an upstream end adapted to receive the projectile and a downstream end at which the projectile is expelled. ... | 05/03/1977 |
| 3996916 | Rapid fire gun A gun for rapidly firing projectiles from a package inserted into a magazine as a cartridge and which are automatically fed into a propelling chamber and barrel connected thereto by a continuous stream of high pressure gas, a portion or all of which flows... | 12/14/1976 |
| 3989245 | Tennis practice device having pneumatic ball projector An instant tennis game simulating a real game of tennis is presented. A pneumatic tennis ball delivery machine replaces the normal opponent. The court is slightly crowned and has sloping gutters so that all balls are automatically, gravity-returned to the... | 11/02/1976 |
| 3989246 | Tennis practice system A tennis practice apparatus consisting of an enclosure providing a playing area and having a regulation-height net member at one end located in front of a cage-like structure forming the end of the apparatus. This cage-like structure is arranged to cause ... | 11/02/1976 |