Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8181904 | Apparatus for facilitating tire valve stem access in self propelled aircraft undercarriage A self-propelled aircraft undercarriage is disclosed, comprising: an axle; a strut supporting said axle; at least one wheel rotatably mounted on said axle; a pneumatic tire mounted on said wheel; a valve stem connected to said tire for enabling measurement of the pr... | 05/22/2012 |
| 8109463 | Self-propelled undercarriage wheel having a low profile tire An undercarriage wheel is disclosed comprising an axle member that supports a drive member, for example but not limited to a compact high torque electric motor, a wheel member driven by said drive member, and a tire attached to the wheel member, wherein the tire bul... | 02/07/2012 |
| 7983804 | System for minimization of aircraft damage on collision A system for minimizing damage on collision to a vehicle having at least one self-propelled wheel is disclosed. The system comprises a motor in a wheel of said vehicle which drives the vehicle, means for measuring the speed of said wheel, means for measuring the tor... | 07/19/2011 |
| 7975960 | Nosewheel control apparatus An apparatus for driving a taxiing aircraft is disclosed, comprising, in an aircraft, two self-propelled nosewheels, each having an electric motor; equipment for flight; dual-function controlling means for controlling said equipment for flight and said nosewheels, s... | 07/12/2011 |
| 7935954 | Artificial band gap A method is disclosed for the induction of a suitable band gap and electron emissive properties into a substance, in which the substrate is provided with a surface structure corresponding to the interference of electron waves. Lithographic or similar techniques are ... | 05/03/2011 |
| 7928683 | High phase order AC machine with short pitch winding A high phase order alternating current rotating machine is disclosed having an inverter drive that provides more than three phases of drive waveform of harmonic order H, and characterized in that the windings of the machine have a pitch of less than 180 rotational d... | 04/19/2011 |
| 7928630 | Monolithic thermionic converter A thermionic converter is disclosed comprising a single or multiple hot (emitter) and cold (collector) electrodes mounted side-by-side on a single substrate and a static electrostatic field for guiding electron from the emitter to the collector. The thermal path bet... | 04/19/2011 |
| 7905813 | Electronically controlled engine generator set An apparatus for controlling the power output of an unthrottled engine has a variable gear ratio transmission connected between a mechanical load and the engine, and it has a controller for controlling the torque load on the engine, according to the power output req... | 03/15/2011 |
| 7893422 | Transistor on the basis of new quantum interference effect A quantum interference transistor comprising a thin metal film having a protrusion and a thin insulating layer between the metal film and protrusion. A potential barrier is formed in the region beneath the protrusion as a result of quantum interference caused by the... | 02/22/2011 |
| 7891609 | Turnaround methods A method for reducing the turnaround time of an aircraft having at least one self-propelled undercarriage wheel comprising the step of: moving the aircraft to a required location using at least one self-propelled undercarriage wheel; wherein thrust equipment, (e.g. ... | 02/22/2011 |
| 7658772 | Process for making electrode pairs The present invention is a process for making a matching pair of surfaces, which involves creating a network of channels on one surface of two substrate. The substrates are then coated with one or more layers of materials, the coating extending over the regions betw... | 02/09/2010 |
| 7651875 | Catalysts Nanostructured surface materials having patterned indents are disclosed and there use for catalytic, therapeutic, herbicidal, pesticidal, antiviral, antibacterial and antifungal applications is disclosed. ... | 01/26/2010 |
| 7642467 | Method for fabrication of separators for electrode pairs in diodes An improved method for manufacturing a matching pair of electrodes comprises the steps of: fabricating a first electrode with a substantially flat surface; depositing islands of an oxidizable material over regions of the surface; depositing a layer of a third materi... | 01/05/2010 |
| 7566897 | Quantum interference device A quantum interference transistor comprising an source region for emitting electron waves into a vacuum, a drain region for collecting the electron waves, a repeating nanostructure in a region between the source and drain regions for introducing a constant phase shi... | 07/28/2009 |
| 7469858 | Geared wheel motor design The present invention is a compound planetary gear system which has a moveable sun gear and a lockable sun gear to change the gear ratio between a high gear ratio and a pseudo 1:1 slipping ratio. The system makes use of a ratchet and pawl mechanism to provide a safe... | 12/30/2008 |
| 7464549 | Polyphase hydraulic drive system The present invention comprises an input drive system, which provides a plurality of phases of oscillating fluid flow, and an output drive system connected directly to the input drive system that is powered by the plurality of phases of oscillating fluid flow. The i... | 12/16/2008 |
| 7375483 | Mesh connected brake array for electrical rotating machines In the present invention, several polyphase devices are connected together: an inverter, and electrical rotating machine, and a resistive load or braking resistor. The purpose of the resistive load is to dissipate excess electrical power which may be produced when t... | 05/20/2008 |
| 7351996 | Method of increasing efficiency of thermotunnel devices The present invention comprises a tunneling device in which the collector electrode is modified so that tunneling of higher energy electrons from the emitter electrode to the collector electrode is enhanced. In one embodiment, the collector electrode is contacted wi... | 04/01/2008 |
| 7327105 | Mesh connected electrical rotating machine with span changing An electrical rotating apparatus is provided that has variable impedance. This is achieved by connecting one of the polyphase components of the apparatus in a mesh connection. The spanning value, L, of such a mesh connection may be varied by changing the harmonic co... | 02/05/2008 |
| 7323709 | Method for increasing efficiency of thermotunnel devices The present invention comprises a tunneling device in which the collector electrode is modified so that tunneling of higher energy electrons from the emitter electrode to the collector electrode is enhanced. In one embodiment, the collector electrode is contacted wi... | 01/29/2008 |
| 7169006 | Thermionic vacuum diode device with adjustable electrodes In accordance with one embodiment of the present invention, a Gap Diode is disclosed in which a tubular actuating element serves as both a housing for a pair of electrodes (92) and as a means for controlling the separation between the electrode pair. In a pre... | 01/30/2007 |
| 7140102 | Electrode sandwich separation Materials bonded together are separated using electrical current, thermal stresses, mechanical force, any combination of the above methods, or any other application or removal of energy until the bonds disappear and the materials are separated. In one embodiment the... | 11/28/2006 |
| 7124583 | Geothermal power generator A Geothermal Power Generator which includes apparatus and method for the in-situ recovery of geothermal energy using thermionic or thermotunnelling converters. These are diode devices which produce electricity when a temperature gradient is applied across them. The ... | 10/24/2006 |
| 7126298 | Mesh connected brake array for electrical rotating machines In the present invention, several polyphase devices are connected together: an inverter (420), and electrical rotating machine (440), and a resistive load or braking resistor (430). The purpose of the resistive load is to dissipate excess electr... | 10/24/2006 |
| 7105938 | Electronically controlled engine generator set An electronically controlled electrical power generator comprises a generator driven by a heat engine, operated by control means, and carrying an electrical load. Operation of the heat engine is at wide open throttle. Control over engine operation and electrical out... | 09/12/2006 |
| 7074498 | Influence of surface geometry on metal properties The influence of surface geometry on metal properties is studied within the limit of the quantum theory of free electrons. It is shown that a metal surface can be modified with patterned indents to increase the Fermi energy level inside the metal, leading to decreas... | 07/11/2006 |
| 7075265 | High phase order electrical rotating machine with distributed windings A rotating induction machine, containing five or more different phases, having windings distributed according to a sinc function with a cutoff frequency allowing low-order spatial harmonics but preventing higher order spatial harmonics from flowing. In a preferred e... | 07/11/2006 |
| 7005381 | Method for flat electrodes The present invention is a method for reducing nanoscale surface roughness. The method involves exposing the surface to an environment that preferentially promotes evaporation of material from the region of nanoscale roughness. The methods involve either heating the... | 02/28/2006 |
| 6971165 | Method for fabrication of separators for electrode pairs in diodes An improved method for manufacturing a matching pair of electrodes comprises the steps of: fabricating a first electrode with a substantially flat surface; depositing islands of an oxidizable material over regions of the surface; depositing a layer of a third materi... | 12/06/2005 |
| 6876123 | Thermotunnel converter with spacers between the electrodes A thermotunneling converter is disclosed comprising a pair of electrodes having inner surfaces substantially facing one another, and a spacer or plurality of spacers positioned between the two electrodes, having a height substantially equal to the distance between t... | 04/05/2005 |
| 6864661 | Rotating induction apparatus An electrical rotating apparatus comprises an inverter system that outputs more than three phases. The apparatus further includes a stator comprising a plurality of slots and full span concentrated windings, with the windings being electrically coupled to the invert... | 03/08/2005 |
| 6838791 | Mesh connected electrical rotating machine with span changing An electrical rotating apparatus is provided that has variable impedance. This is achieved by connecting one of the polyphase components of the apparatus in a mesh connection. The spanning value, L, of such a mesh connection may be varied by changing the harmonic co... | 01/04/2005 |
| 6774003 | Method for making a diode device A method for manufacturing a pair of electrodes comprises fabricating a first electrode with a substantially flat surface and placing a sacrificial layer over a surface of the first electrode, wherein the sacrificial layer comprises a first material. A second materi... | 08/10/2004 |
| 6720704 | Thermionic vacuum diode device with adjustable electrodes Diode devices are disclosed in which the separation of the electrodes is set and controlled using piezo-electric, electrostrictive or magnetostrictive actuators. This avoids problems associated with electrode spacing changing or distorting as a result of heat stress... | 04/13/2004 |
| 6531703 | Method for increasing emission through a potential barrier A method for promoting the passage of elementary particles at or through a potential barrier comprising providing a potential barrier having a geometrical shape for causing de Broglie interference between said elementary particles is disclosed. In another... | 03/11/2003 |
| 6495843 | Method for increasing emission through a potential barrier A method for promoting the passage of elementary particles at or through a potential barrier comprising providing a potential barrier having a geometrical shape for causing de Broglie interference between said elementary particles is disclosed. In another... | 12/17/2002 |
| 6285769 | Force balance microphone The present invention is a microphone that applies the principle of negative feedback directly to the diaphragm, greatly reducing the non-linearity of the diaphragm. In a further embodiment, digital negative feedback is used, incorporating the diaphragm i... | 09/04/2001 |
| 6281514 | Method for increasing of tunneling through a potential barrier A method for promoting the passage of elementary particles at or through a potential barrier comprising providing a potential barrier having a geometrical shape for causing de Broglie interference between said elementary particles is disclosed. In another... | 08/28/2001 |
| 6281139 | Wafer having smooth surface A method for preparing a wafer having a smooth surface is disclosed. The present invention includes the step of preparing a wafer base and a first material on the wafer base. The wafer base and first material have a surface and a plurality of holes. The p... | 08/28/2001 |
| 6229083 | Thermionic generator A method for building a thermionic converter comprises providing an electrode and creating a central depression of substantially uniform depth on a face of the electrode. A surface of the central depression is coated with a layer comprising a thermionic m... | 05/08/2001 |
