Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 4766726 | Segmented case rocket motor A segmented rocket motor case includes wedge members for forcing the case segments into position to remove free play at the joint thereof which may otherwise interfere with or upset the missile's guidance system and throw it off target. A lap joint member... | 08/30/1988 |
| 4764907 | Underwater transducer An underwater sonar transducer includes a centrally located beam with a plurality of stacks of piezoelectric transducer elements extending from each side, with a rigid end beam at the opposite end of each stack. A plurality of bolts extending from one end... | 08/16/1988 |
| 4727670 | Electromechanical firing mechanism This invention concerns a unique firearm trigger, safety, and stock attachment mechanism and to an embodiment in a semi-automatic blowback rifle where the receiver is mounted in the buttstock, a style commonly referred to as a "bullpup". The trigger is a ... | 03/01/1988 |
| 4724532 | Vibrator response linearization circuit A method and apparatus for driving a seismic hydraulic vibrator in which a conventional sinusoidal drive signal in modified in such a manner as to improve vibrator response parameters. The sinusoidal drive signal is modified such that in the regions of th... | 02/09/1988 |
| 4720930 | Firearm with foreign matter receiving cavities Modifications are provided in the structure of firearms such as breech-loading revolver handguns. Traditionally, these firearms are constructed with mating surfaces in face to face contact, which surfaces must be separated for loading. Where foreign parti... | 01/26/1988 |
| 4711048 | Antipersonnel shotgun choke A shotgun choke for deforming the shot pattern to throw a very wide pattern with a narrow vertical band by maintaining a substantially constant width in the choke but narrowing the height of the interior of the choke in a parabolic fashion.... | 12/08/1987 |
| 4709637 | Temperature sensitive pyrotechnical train interruption device A unitary device for venting a rocket motor of an ordnance item having a warhead comprises a circumferential belt containing a cutting explosive charge and constructed for removable mounting around a housing of the rocket motor, and an activating device h... | 12/01/1987 |
| 4709497 | Handgun frame with fixed barrel bushing A handgun frame is provided for receiving a barrel and slide of the type operating on the Browning short recoil principle. The frame includes a magazine well defined within a grip formation. An elongated cantilever support extends forwardly from the grip ... | 12/01/1987 |
| 4706401 | Trigger mechanism for a weapon By providing the trigger mechanism in a pistol with a lever (8) which is mounted at its rearmost end on an axle (10), and by providing said axle (10) with a notch which can hold a superjacent hammer retainer (13) having a projection (20), it is possible t... | 11/17/1987 |
| 4702027 | Thermal liner for gun firing chamber A liner for the firing chamber of a gun, designed to prevent ammunition "cook-off". The liner minimizes flow of heat into the chamber wall, incident to the combustion process. The liner also retards the flow of heat in the reverse direction, i.e. from the... | 10/27/1987 |
| 4702030 | Revolver with firing order indicator notches Modifications are provded in the structure of firearms such as breech-loading revolver handguns. Traditionally, these firearms are constructed with mating surfaces in face to face contact, which surfaces must be separated for loading. Where foreign partic... | 10/27/1987 |
| 4702172 | Sabot arrangement for a sub-caliber projectile A sabot arrangement is produced in accordance with an improved manufacturing method. The sabot arrangement includes a rotational symmetrical sabot body having a central axial bore and radial separating grooves or slots. The radial grooves or slots divide ... | 10/27/1987 |
| 4701890 | Device for locking a set of gimbal-mounted detectors A logging sonde for evaluating underground formations traversed by a borehole is disclosed. The sonde contains a frame which is free to rotate relative to the cylindrical body of the sonde. The frame supports a plurality of detector means including at lea... | 10/20/1987 |
| 4699061 | Binary chemical warhead Hardware and method are disclosed for mixing at least two non-toxic chemical compounds in a warhead for missiles and artillery projectiles to form a toxic agent during their ballistic travel to a target. The inventive design avoids danger from spills of t... | 10/13/1987 |
| 4700333 | Hydrophone design to overcome reduction in leakage resistance between electrode surface of transducer element assembly and the water in which the hydrophone is immersed The insulation resistance between the electroded surfaces of an underwater transducer and the water within which the transducer is immersed is greatly improved by coating the electroded surface of the transducer with a layer of air-free, high-resistance w... | 10/13/1987 |
| 4697367 | Buttplate with sliding cover for buttstock storage chamber A buttplate is disclosed for a firearm buttstock of the type having a chamber therein for storing cartridges and the like. The buttplate has a plate member with an opening to permit access to the chamber and a channel in communication with the opening for... | 10/06/1987 |
| 4693182 | Ammunition unit An ammunition unit (1) comprising a shaped-charge warhead which can be ignited by means of direct impact on a target (15), by means of a proximity fuze (16,17) and/or an external signal (29). The warhead has preferably an inclined position so that its lon... | 09/15/1987 |
| 4691461 | Adjustable gun trigger mechanism A trigger mechanism permits the adjustment of trigger pull quickly and easily from the exterior of a handgun over a wide range of adjustment. A double trigger arrangement includes a means for moving a contact point between a front pivot trigger and the he... | 09/08/1987 |
| 4690059 | Method of maintaining an uninterrupted warning signal An emergency flare for road and railway use which changes so a different color during the final stage of illumination, thus warning that burnout is approaching, and thereby allowing time for replacement or other means to warn oncoming traffic.... | 09/01/1987 |
| 4689908 | Holster and handgrip extension for miniature handguns Holster-handgrip extension apparatus for miniature handguns of the type having a handgrip framework defining an opening therethrough. The apparatus includes a pair of pivot bolt support plates located within the framework opening and separated by a separa... | 09/01/1987 |
| 4690061 | Land mine for use in a simulated war game A weapon for use in a simulated war game which has the characteristics of a land mine and therefore does not require the user to be in proximity to a target when the weapon is activated. The weapon includes a housing having a first chamber adapted to cont... | 09/01/1987 |
| 4686905 | Cartridge for frangible projectile A cartridge with a frangible projectile, usable in an automatic or semi-automatic fire-arm, for instance a pistol, wherein the propellant gases are initially expanded to recoil the breech block and then further expanded to propel the frangible projectile ... | 08/18/1987 |
| 4685236 | Graphite/metal matrix gun barrel A gun barrel is constructed of an inner tubular liner of hard material forming the bore of the barrel and an outer jacket of carbon-fiber reinforced metal matrix material in which the fibers are helically wound about the liner. In a preferred construction... | 08/11/1987 |
| 4685235 | Barrel alignment device in automatic weapon An improvement alignment device in an automatic weapon comprises a boss on the weapon barrel and an aligned entry slot, crossover slot and retention slot in the barrel support.... | 08/11/1987 |
| 4683671 | Recoil shock pad A recoil shock absorbing cushion for attachment to a gun stock makes use of a jacket of yieldable material having a chamber in which is lodged a shock absorbing filler. The chamber has an opening which faces the gun stock. A plate covers the opening and h... | 08/04/1987 |
| 4682309 | Device for generating acoustic pulses by implosion, inside a well A device for generating acoustic pulses by driving suddenly into a body lowered in a well a piston having a face in contact with the liquid contained in the well and adapted for sliding inside said body. The device comprises a valve securely fixed to the ... | 07/21/1987 |
| 4677781 | Retrofit firearm A proven sporting type shotgun with the stock removed therefrom converted to a military combat type weapon by addition of a retrofit assembly which includes a retrofit housing containing the trigger of the basic sporting shotgun and at least a portion of ... | 07/07/1987 |
| 4674391 | Device for supporting warhead case during a charge pressing step A ring (9) serves to support a case (1) during pressing of a charge (4) of a warhead. On the side, ring (9) is arranged around the case (1), against which a pressing force is exerted. The inside diameter (d) of ring (9) is smaller than the outside diamete... | 06/23/1987 |
| 4674217 | Firearm with reversible barrel For firing bullets or cartridges of different lengths but the same caliber, there is provided a barrel which is threaded at both ends and reversible, with different-length bores in each end. There is desirably also a protective cap for the threads at the ... | 06/23/1987 |
| 4674216 | Synthetic material rifle stock with panel inserts A rifle stock having its forearm, mid-stock and butt section comprised of a one piece plastic structural framework together with attached insert panels. The plastic framework is a lightweight readily moldable structure consisting of web walls having thick... | 06/23/1987 |
| 4672763 | Safety device for preventing the unauthorized firing of a weapon by releasing the hammer spring A safety device for preventing the unauthorized firing of a weapon, such as a pistol. The device has a hammer, a handle, and a leaf spring inside of the handle. The leaf spring places tension on the hammer, when the weapon is enabled. The leaf spring is h... | 06/16/1987 |
| 4671005 | Trigger mechanism A trigger assembly for firearms which is externally adjustable to change trigger pull forces for both hunting and competition shooting, and which includes safety features for preventing inadvertant discharge. The trigger assembly is particularly adaptable... | 06/09/1987 |
| 4669212 | Gun barrel for use at high temperature The present invention provides a gun capable of operating at relatively higher temperatures. The barrel of the gun is made up of at least two layers. The inner layer is of a refractory material which may be a metal refractory or a non-metal refractory. Th... | 06/02/1987 |
| 4669386 | Spreadable telescopic head for appliances, projectiles, bombs or missiles A telescopic warhead for a submunition ejectable from a carrier projectile the explosive charge of which is made up of submunitions scatterable and housed in the front portion of the carrier projectile, characterized in that the telescopic head includes a... | 06/02/1987 |
| 4667429 | Adjustable trigger means for rifles and the like Disclosed is a trigger for rifles and similar firearms, which trigger is provided with an arresting element that permits the easy positioning of the trigger into the desired arresting notch of the trigger support provided in the body of the rifle. Three e... | 05/26/1987 |
| 4665794 | Armor and a method of manufacturing it An armour plate (1) comprises cavities (2), which are arranged with a plurality of packing bodies (3) in an irregular or regular shape relative to each other. The packing bodies are hollow-bodied, preferably spherical or tubular, and consist of a non-meta... | 05/19/1987 |
| 4665795 | Gun muzzle reference system A muzzle reference system is provided for correcting errors in aiming signals produced by a fire-control system of an artillery gun having a gun muzzle pivotable about a first axis and movable about a second axis extending perpendicularly of the first axi... | 05/19/1987 |
| 4664035 | Missile warheads An improved anti-ballistic missile warhead in which the missile structure and warhead projectiles are combined into a single entity. The structure, which may be formed of superalloy to resist heat, requires no heat shield, the outer surface being aerodyna... | 05/12/1987 |
| 4663877 | Shoulder firearm recoil absorbing mechanism A firearm employs a gun recoil apparatus wherein the comb portion of the stock is fixed relative to a butt end plate. The stock includes a base portion movable with respect to the comb portion. The base portion has at least one guide bore therein which ex... | 05/12/1987 |
| 4663876 | Stock assembly kit and rifle embodying the same A carbine comprising an improved stock assembly kit combined with a barrel and action assembly of preselected generic style or configuration, preferably that of a U.S. M1 carbine. The improved stock assembly includes a buttstock comprised of opposed conca... | 05/12/1987 |
