Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7281534 | Crossbow with stock safety mechanism A crossbow includes a safety mechanism located on the stock of the crossbow that prevents the crossbow from firing until the safety mechanism is properly engaged. The safety mechanism includes a push button that requires the operator appendages to be securely below ... | 10/16/2007 |
| 7174884 | Trigger assembly A crossbow having an improved firing assembly. The improved assembly attaches to a bowstring at a single point and draws the string back to have the string retained between a first string retainer and a second string retainer. By allowing the string to be drawn util... | 02/13/2007 |
| 7086191 | Trigger assembly A trigger assembly comprises a trigger frame having a body with a cavity therein, a handle connected to the body, a trigger guard on the body defining a space with which a portion of the cavity is in communication, a connection member on the body, a slot member on t... | 08/08/2006 |
| 7014638 | Stapler handle An ergonomic and proprioceptive handle design for instruments is disclosed. The handle can be used with a wide variety of medical instruments, such as a rongeur, as well as other instruments, such as guns and staplers. ... | 03/21/2006 |
| 6973748 | Paintball guns A paintball gun trigger system includes a trigger, an emitter arranged to emit light and collector arranged to receive an amount of the light that varies with the position of the trigger and produce a signal that varies with the position of the trigger. A controller... | 12/13/2005 |
| 6874492 | Compressed gas-powered gun simulating the recoil of a conventional firearm A compressed gas powered gun provides recoil simulating the recoil of a gun firing gunpowder propelled projectiles. The valve assembly provides both consistent shot to shot pressure, and rearward gas pressure for generating recoil. Preferred embodiments of the compr... | 04/05/2005 |
| 6802304 | Trigger assembly with a safety device for a crossbow A trigger assembly has a housing, a trigger, an actuating lever, a string holder, a bowstring catch biasing member, a safety pin, a safety lock, a pushing arm, a block, a block biasing member and a string stop. The housing has a mouth. The actuating lever has a hook... | 10/12/2004 |
| 6612298 | Safety for sporting pellet or air guns A new safety that is incorporated to a sporting pellet or air gun by which the accidental firing of the gun is prevented even when the gun is loaded, making it necessary to remove it in order to fire the gun. This safety includes a square bulky button wit... | 09/02/2003 |
| 6578565 | Air or gas-powered guns A frame bearing a compressed air/gas reservoir connected to an assembly of a valve operated by a hammer striking the valve slide, a trigger operating the hammer, a tilting assembly on the frame including a barrel and a detachable, rotating, cylindric load... | 06/17/2003 |
| 6460529 | Archery bow trigger safety lock An archery bow trigger safety lock wherein an arm is pivotally connected to the exterior wall surface of the housing of an archery bow trigger mechanism including a trip lever having a portion extending outwardly of the housing. The arm overlies the trip ... | 10/08/2002 |
| 6352070 | Safety for sporting pellet or air rifles The present invention is a safety formed in a sporting pellet or air rifle which prevents the accidental firing of the rifle even when it is loaded. The safety utilizes a loading pull lever, a crescent-shaped portion positioned generally at the middle of ... | 03/05/2002 |
| 6205990 | Dry-fire prevention mechanism for crossbows A dry fire prevention safety mechanism for crossbows having a trigger mechanism which releases a bowstring to discharge an arrow. A spring-loaded catch arm is pivotally connected to the crossbow and has a hook at one end and a ramp portion at the opposite... | 03/27/2001 |
| 5962804 | Actuating device of a dynamite gun An actuating device for a dynamite gun includes a barrel member having a first tube slidably mounted to a second tube which is fixedly connected to the barrel member, a bar removably received in the second tube. The first tube has a first slot and a first... | 10/05/1999 |
| 5906191 | Compressed gas-operated shooting weapon The invention discloses a compressed gas-operated firearm (1), especially a pistol, which at the utilization of a drum (18) for multi-shot projectile receipt distinguishes itself through a linearly displaceable weapon barrel (3) to achieve a loading posit... | 05/25/1999 |
| 5649520 | Crossbow trigger mechanism The present invention is directed to a crossbow trigger mechanism providing improved bowstring retention and release characteristics. The invention further provides a safe and reliable trigger mechanism which enhances accurate shooting with the crossbow. ... | 07/22/1997 |
| 5642723 | Elastic band projectile slinger An elastic band projectile slinger has an elongated base forming an elongated projectile guide track along its length. A pivoted support plate on the front end of the base anchors a pair of elongated elastic bands which are stretchable to a releasable lat... | 07/01/1997 |
| 5619979 | Crossbow for the shooting of arrows, bolts, harpoons or for narcoticizing purposes The invention relates to a crossbow for the shooting of arrows, bolts, harpoons or for narcoticizing purposes with rigid propelling arms, wherein a spring assembly centrally arranged in the base frame is tensioned by tensioning members and wherein the tri... | 04/15/1997 |
| 5598829 | Crossbow dry fire prevention device The invention is directed to a dry-fire prevention device for use with a crossbow. The crossbow includes a trigger mechanism which may have a guide slot into which a bowstring is drawn and retained for firing. A pivotal string catch member is positioned r... | 02/04/1997 |
| 5596976 | Trigger device for crossbows, with automatically activated safely means A crossbow trigger device having an automatically activated safety includes a trigger, a catch and at least one safety lever or stem cooperating with a projectile pusher, such as a crossbow string, or with a catch. The catch is pivotally mounted in the tr... | 01/28/1997 |
| 5582392 | Wire stringing device A wire stringing device which comprises a barrel having a cylindrical bore which is closed at one end and open at the other end, a handle depending from said barrel, a compression spring disposed within the bore in proximity to the closed end, a projectil... | 12/10/1996 |
| 5253873 | Variable force projector and catcher A spring-operated plunger type ball shooter is disclosed having a ball catcher and holder at one end and a twist grip trigger at the other end. The shooter is designed for the playing of games and includes a gravity actuated elevation indicator and a spri... | 10/19/1993 |
| 5215069 | Cross bow having a safety device A cross bow including a string engaged to a bow prod of a stock, a pair of bars for drawing the string to a cocked position, a butt pivotally coupled to the rear end of the stock, a recess formed in the rear end of the stock, a member disposed on the rear... | 06/01/1993 |
| 5184596 | Bowstring release safety mechanism This invention provides a safety mechanism as an improvement to a bowstring release device and operative to prevent the accidental discharge of an arrow drawn in the bow. The safety mechanism disclosed comprises a slidable cam which is adapted to actuate ... | 02/09/1993 |
| 5165383 | Gun with pivoting barrel, projectile loader, and trigger interlock A gun includes a frame and a pivoting barrel assembly which is releasably latched in a firing position by a pair of flexible and resilient latches on the barrel assembly which engage shoulders on the frame. A trigger is slidably mounted on the frame for m... | 11/24/1992 |
| 5085200 | Self-actuating, dry-fire prevention safety device for a crossbow A self-actuating, dry-fire prevention device for a crossbow (10) includes a pivotable stop block (30) and a pivot pin (35) and a spring (41) to pivot said stop block into releasable locking engagement with the crossbow trigger mechanism (15) such that the... | 02/04/1992 |
| 5067472 | Bow string release A bow string release characterized by its ability to easily release the bow string and arrow smoothly and without deviation to improve accuracy. A body universally swivelly affixed to a wrist strap includes pivoted string retainers controlled by a pair of... | 11/26/1991 |
| 5025771 | Crossbow A crossbow incorporates a simplified trigger and bow string release assembly which includes a single piece trigger and bow string release member pivotally mounted within the stock. A spring urges the trigger and bow string release member about its pivot a... | 06/25/1991 |
| 4971019 | Shaft release spear gun A spear gun assembly for propelling a sharpened spear in an underwater hunting environment. The assembly includes a holding bar rigidly attached to the gun which engages a hole in the spear. A trigger assembly is actuatable to pivot a lifter for lifting t... | 11/20/1990 |
| 4962747 | Speargun trigger mechanism A trigger assembly for spearguns with a reversible safety and improved trigger pull. The safety has an operator that extends over the trigger area and is positioned so the fisherman's index finger can operate it while his hand is on the speargun grip.... | 10/16/1990 |
| 4887583 | Braking device for safety toy-gun A safety device for a toy gun has first and second firing pins which can block movement of a trigger. The firing pins are electro-magnetically operated. The first firing pin is normally in a position which blocks movement of the trigger and the second fir... | 12/19/1989 |
| 4834059 | Air gun with safety features A gun, which compresses a spring during cocking and uses the air accelerated by the spring to propel a projectile during firing, incorporates several safety features. The size of the handle makes it impossible for children to operate. The trigger cannot b... | 05/30/1989 |
| 4759336 | Double underwater speargun An underwater speargun consisting of two spears that are independent of each other. This underwater speargun is capable of 2 rapid discharges of spears or 2 simultaneous discharges of spears. Accidental firing is prevented due to the safety blocking the t... | 07/26/1988 |
| 4721092 | Trigger device for cross bows, with automatically activated safety means A cross bow trigger device having an automatically activated safety includes a trigger, a catch and at least one intermediate safety member cooperating with the catch. The catch is pivotally mounted in the trigger device and has an upper part extending ab... | 01/26/1988 |
| 4716880 | Hand held crossbow A hand held crossbow. The crossbow has a frame including a handle and a barrel. The crossbow holds an arrow by gripping the back end of the arrow against the top of the barrel. This gripping holds the arrow in place without any necessity of restraining th... | 01/05/1988 |
| 4693228 | Crossbow trigger mechanism A crossbow includes a trigger mechanism providing positive setting or cocking and release of a drawn bowstring. As the bowstring is drawn, it is pulled rearwardly into a trigger assembly slot to momentarily rearwardly deflect and ride over a spring-urged ... | 09/15/1987 |
| 4662345 | Semi-automatic crossbow apparatus and method Apparatus and method of providing for a semi-automatic crossbow embodying a new cocking device and a new magazine. The cocking device consists of a pulley system mounted to the frame of the crossbow and operated by a filament. The crossbow is cocked by ho... | 05/05/1987 |
| 4649893 | Compressed-air weapon with piston rod hook element and counter-hook engagement system In a compressed-air weapon, for the simplification of original production and repair and for the simplification of stockholding it is proposed that the trigger, the counter-hook-engagement system, the trigger return spring and the trigger safety catch sys... | 03/17/1987 |
| 4603676 | Bow drawback mechanism A crossbow having a bow prod with a string attached to its opposite ends, engageable by a releasable catch for holding the string at a cocked position spaced rearwardly from the bow prod. The releasable catch is mounted to a cocking mechanism that is slid... | 08/05/1986 |
| 4407260 | Archery bowstring release device A release device for aid in drawing and quickly releasing the string of a bow to facilitate accurate launching of an arrow. A manually shiftable member is carried by the housing of the device, and has a cam projection positioned between the legs of spring-urge... | 10/04/1983 |
| 4388914 | Crossbow with coil spring force developing means for projecting an article In a crossbow an elongated casing is connected at one end with a bowstring trigger release mechanism. A pair of bowstring interconnected wings are pivotally connected to the other end of the casing with the wings being normally biased forwardly in aligned... | 06/21/1983 |
