Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 8104458 | Projectile launcher A projectile launcher having a magnet based driver motor. The driver motor is constructed of a coil winding suspended within a magnetic field formed by the combination of a front plate, a magnet and a pole piece attached to a back plate. An electrical controller is ... | 01/31/2012 |
| 8079352 | Electromagnetic decoy launcher An electromagnetic rail gun launcher for launching an armature attached to a projectile includes a barrel, having a bore, and a body that includes a pair of main rails, a first pair of augmenting rails one of each lying outboard of and coextending with each of one o... | 12/20/2011 |
| 7832385 | Ripple reduction in electromagnetic launcher current from pulsed alternators Systems and methods for improving the current pulse from multiple pairs of pulsed alternators used for driving large loads such as an electromagnetic launcher (i.e., “rail gun”) load. Conventional current pulse ripples are reduced by interleaving pulses from mul... | 11/16/2010 |
| 7753040 | Helical field accelerator A helical field device that accelerates an object to high velocity by converting rotational kinetic energy in the device into linear kinetic energy in the object, and alternatively, that decelerates objects from high velocity by converting the linear kinetic energy ... | 07/13/2010 |
| 7634989 | Apparatus and method to pulverize rock using a superconducting electromagnetic linear motor A rock pulverizer device based on a superconducting linear motor. The superconducting electromagnetic rock pulverizer accelerates a projectile via a superconducting linear motor and directs the projectile at high speed toward a rock structure that is to be pulverize... | 12/22/2009 |
| 7614393 | Channel gun magnetic launcher An electromagnetic launcher comprising, an electric power supply, a conductive, stationary guide operatively connected to the power supply and forming a flowpath for current from the power supply, and a non-conductive projectile disposed adjacent to the guide and wh... | 11/10/2009 |
| 7409900 | Rails for electromagnetic hypervelocity launcher An electromagnetic launcher is provided for accelerating a projectile from a breech end to a muzzle end. The launcher includes a container, a rail contained therein and a support. The container includes an inner surface along an axial direction. The rail is containe... | 08/12/2008 |
| 7398722 | Multiple pole electromagnetic propulsion system with separated ballistic guidance and electrical current contact surfaces An electromagnetic propulsion system is disclosed having separate rails for ballistic guidance and for carrying current. In this system, one or more pairs of ballistic guidance rails are provided, with each ballistic guidance rail having a pair of current carrying r... | 07/15/2008 |
| 7357128 | Closed loop defined profile current controller for electromagnetic rail gun applications A closed loop current controller for an electromagnetic rail gun. It is necessary to control the muzzle velocity of a rail gun accurately for the gun to be a good artillery device. The present invention provides a closed loop control system to accurately regulate th... | 04/15/2008 |
| 7312540 | Linear motor armature and linear motor Connectors (25a), (25b), (25c), (25d), (25e), and (25f) for electrically connecting lead wires of armature windings (4) coiled around armature blocks (10), (11),... | 12/25/2007 |
| 7077046 | Resonance in electromagnetic launchers The present invention considers the problem of energizing large electric current, electromagnetic driving force and acceleration in coilguns by means of electromagnetic resonant oscillations, both in the armature, that represents the oscillatory contour consisting o... | 07/18/2006 |
| 7077047 | Electromagnetic propulsion devices Electromagnetic propulsion device as a gun or reversible electric motor having a barrel with a cavity extending its length, an armature in said cavity with a permanent magnetic or energized propulsion bus coil, a plurality of wall conductors orthogonal and circumscr... | 07/18/2006 |
| 7069922 | Paintball marker internal reset system An internal reset system for paint ball markers. A hammer body as modified rearwardly to include an axial opening to receivably retain the forward head of a reset rod. The forward portion of the reset rod is thus free to reciprocate within the axial opening, but res... | 07/04/2006 |
| 7041203 | Apparatus and method for generating and using multi-direction DC and AC electrical currents Multi-directional currents are generated in a medium by cyclically reversing the direction of a conventional current applied to at least one of at least two electrodes so that an electromotive force (EMF) pulse travels from side of the electrode to the other, changi... | 05/09/2006 |
| 6997173 | Method for shipboard operation of electromagnetic gun and rotating pulse forming network An electromagnetic gun and rotating pulsed network system that includes a gun barrel coupled to a gun mount coupled on a rotating platform on one deck of a naval ship. A pulse forming network which is cylindrical in shape provides pulsed energy to the electromagneti... | 02/14/2006 |
| 6923106 | Rotating pulse forming network for shipboard operation of electromagnetic gun and capacitor module An electromagnetic gun and rotating pulsed network system that includes a gun barrel coupled to a gun mount coupled on a rotating platform on one deck of a naval ship. A pulse forming network which is generally cylindrical in shape provides pulsed energy to the elec... | 08/02/2005 |
| 6766793 | Electromagnetic gun and rotating pulse forming network An electromagnetic gun and rotating pulsed network system that includes a gun barrel coupled to a gun mount coupled on a rotating deck of a naval ship. A pulse forming network provides pulsed energy to the electromagnetic gun, and the pulse forming network is cylind... | 07/27/2004 |
| 6725759 | Integral containment electromagnetic gun Methods and apparatus related to design and construction of lightweight and mobile rail gun barrels. The barrels comprise a pair of elongated, generally parallel conductive rails extending along opposite sides of the bore and being symmetrical about a longitudinal a... | 04/27/2004 |
| 6696775 | Apparatus for commutation of a helical coil launcher Apparatus for commutating turns of a stator coil for a helical coil launcher. An annular brush assembly includes an annular support and a plurality of electrical contacts disposed circumferentially about the annular support for contacting the stator coil.... | 02/24/2004 |
| 6622713 | Rail gun A rail gun uses magnetic forces to accelerate a round held within the firing chamber of the gun. A pair of rails extend along a length of the firing chamber and each has at least one wire passing therethrough. At least one toroid magnet encompasses the ra... | 09/23/2003 |
| 6237581 | Low energy track A track useful for guiding a projectile having no wheels along a launching trajectory. The track comprises: an elongate track base extending parallel to the trajectory and a plurality of spaced supporting members, each rotatably carried by the elongate tr... | 05/29/2001 |
| 6231452 | Magnetic putter A golf club shaft is provided with a pressure actuated switch on the handle and is operatively connected by an electrical circuit to a training head that has electromagnets mounted in both its forward and backward faces. When the golfer presses down on th... | 05/15/2001 |
| 6142131 | Electromagnetic launcher with pulse-shaping armature and divided rails An electromagnetic launcher includes a single or multi-polar, multi-phase electrical generator powered by an external source; electrical conductors leading from output coils of the generator and from a center point joining the output coils; a plurality of... | 11/07/2000 |
| 6074360 | Electromagnetic transdermal injection device and methods related thereto Featured is a method for injection of a payload into the tissues of an organism or a body, including the steps of generating forces by electromagnetic repulsion and accelerating the payload to be injected, using the generated electromagnetic forces. The p... | 06/13/2000 |
| 5915291 | Reactive ballistic protection device The protection device according to the invention comprises a primary and a secondary coil facing each other. Current flow through the primary coil induces magnetic fields which repel each other, so that the two coils are jerked apart and a missile is proj... | 06/22/1999 |
| 5869911 | Method and apparatus for accelerating flying bodies Disclosed is a method and an apparatus for accelerating and shooting a flying body at superhigh speed, consisting of a capacitor in which a high electric charge can be stored; a primary coil connected to the capacitor via a switching means; a conductive c... | 02/09/1999 |
| 5856630 | High velocity electromagnetic mass launcher having an ablation resistant insulator A railgun having a composite insulator of laminated materials positioned between the rails. The composite insulator is comprised of a series of conducting layers oriented with the edges toward the bore, or barrel, of the railgun and their wide edges away ... | 01/05/1999 |
| 5844161 | High velocity electromagnetic mass launcher having an ablation resistant insulator A railgun having a composite insulator of laminated materials positioned between the rails. The composite insulator is comprised of a series of conducting layers oriented with the edges toward the bore, or barrel, of the railgun and their wide edges away ... | 12/01/1998 |
| 5763812 | Compact personal rail gun A compact bearing ball, or rail, gun to magnetically accelerate ferro-magnetic BBs is disclosed. The gun comprises a main board containing a channel sized to allow smooth passage of a BB, a straight portion of that channel forming a barrel terminating at ... | 06/09/1998 |
| 5574240 | Propellants useful in electrothermal-chemical guns The present invention provides a propellant for electrothermal-chemical guns comprising a dispersion of one or more energetic solids in an energetic liquid phase. The energetic solid is preferably a nitramine such as cyclotrimethylenetrinitramine (RDX) an... | 11/12/1996 |
| 5540134 | Alternator driven electromagnetic launching system A superconducting single phase alternator is connected by a circuit breaker across the breech ends of a pair of conductive launching rails. At a predetermined point on the alternator voltage wave a projectile establishes a current path between the rails t... | 07/30/1996 |
| 5483863 | Electromagnetic launcher with advanced rail and barrel design An improved electromagnetic launcher (10; 98; 150) has a barrel (20; 100) formed by at least one pair of bus-bars (30, 32; 102, 104; 156, 158; 184, 184, 188, 190) to transport current longitudinally along the barrel. The barrel includes a bore (36; 108) w... | 01/16/1996 |
| 5458043 | Battery charging capacitors electromagnetic launcher A rapid fire electromagnetic launcher system (EML) employs a plurality of capacitor modules which are charged by an equal number of modules of lead acid batteries. The invention comprises the combination of standard automotive lead acid batteries for char... | 10/17/1995 |
| 5454289 | Lightweight high L' electromagnetic launcher Methods and apparatus related to design and construction of lightweight and mobile railgun barrels having high L' (inductance per unit length). The barrels comprise stacked metallic annular laminations in combination with prestressed tension elements to a... | 10/03/1995 |
| 5435225 | Omni-directional railguns A device for electromagnetically accelerating projectiles. The invention features two parallel conducting circular plates, a plurality of electrode connections to both upper and lower plates, a support base, and a projectile magazine. A projectile is spri... | 07/25/1995 |
| 5431083 | Segmented electromagnetic launcher A segmented electromagnetic launcher, comprising a solid rail (20) and a segmented rail (21), formed from segments (22a to 22z) with number of segments greater than one, isolated from one another. These two rails are positioned parallel to and spaced apar... | 07/11/1995 |
| 5417140 | Flying object acceleration method by means of a rail-gun type two-stage accelerating apparatus In a two-stage railgun accelerating apparatus, a flying object is initially accelerated by acceleration gas produced by a gas gun. The initially accelerated flying object is led through an introducing pipe to an inlet of a railgun section of the two-stage... | 05/23/1995 |
| 5386759 | Flying object acceleration method by means of a rail-gun type two-stage accelerating apparatus In a two-stage railgun accelerating apparatus, a flying object is initially accelerated by acceleration gas produced by a gas gun. The initially accelerated flying object is led through an introducing pipe to an inlet of a railgun section of the two-stage... | 02/07/1995 |
| 5385078 | Conducting phase change material armature for an electromagnetic launcher system Electromagnetic launcher apparatus which includes a set of conductive rails and a projectile having an armature which comprises both primary conductive material and phase changeable conductive material. This conducting, phase change material armature comp... | 01/31/1995 |
| 5360999 | Explosively actuated thermal opening switch An apparatus and method are provided for controlling the switching characteristics of an explosively actuated switch. The switch comprises a conductor that is only partially severed by explosive forces. A bridge region, the conductive portion of the condu... | 11/01/1994 |
