Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8074920 | Helicopter having means for the aerodynamic support of the torque equalization A helicopter has at least one main rotor (2) situated on an airframe (1), on which a tail rotor (4) is additionally attached spaced apart from the airframe (1) via a tail boom (3) for torque equalization. The tail boom (3) i... | 12/13/2011 |
| 8074921 | Helicopter rotor A rotor for a helicopter, the rotor having a drive shaft rotating about a first axis; a hub connected functionally to the drive shaft in angularly fixed manner with respect to the first axis and in rotary manner with respect to a second axis crosswise to the first a... | 12/13/2011 |
| 8011614 | Bird vortex flying machine The present invention comprises, in one embodiment, an inexpensive, lightweight flying vehicle using fixed pitch helicopter blades powered by ramjet engines mounted to a power-ring which transfers torque to the lifting rotors. The use of fixed pitch blades eliminate... | 09/06/2011 |
| 7967239 | Rotor drive and control system for a high speed rotary wing aircraft A drive system for a high speed rotary-wing aircraft includes a combiner gearbox in meshing engagement with a main gearbox. The combiner gearbox is driven by one or more engines such that a main rotor system and a translational thrust system are driven thereby. The ... | 06/28/2011 |
| 7959105 | Aircraft provided with a silent shrouded rotor An aircraft has a streamlined structure (10) pierced by an air flow duct (20) having an axis of symmetry (AX) contained in a plane of symmetry (P) perpendicular to a longitudinal axis (AL) of the aircraft, the aircraft possessing a shrouded rotor (1... | 06/14/2011 |
| RE42446 | Emergency anti-torque thruster system An anti-torque thruster system implemented onboard an aircraft comprising a propulsion means coupled to the aircraft, wherein the propulsion means is capable of providing a measure of anti-torque thrust to the aircraft, a fuel storage container coupled to the propul... | 06/14/2011 |
| 7950603 | Integral powered wing aircraft Disclosed is a rotary winged aircraft. More specifically, this invention relates to an aircraft wherein lift is generated by two discs which rotate about a central axis. The discs generate equal and opposite forces such that the central axis remains fixed, thereby a... | 05/31/2011 |
| 7946526 | Rotary-wing vehicle system A rotary-wing apparatus that is aeronautically stable, easy to fly with a multidimensional control, small size, and safe to fly and low cost to produce. The rotary-wing apparatus includes a coaxial, counter rotating rotor drive providing lifting power with an inhere... | 05/24/2011 |
| 7823827 | Vectored thruster augmented aircraft The Invention is a rotary-wing aircraft having at least two vectored thrusters that may be tilted from a horizontal to a vertical position and to positions intermediate between the horizontal and vertical positions. The two vectored thrusters are equipped with prope... | 11/02/2010 |
| 7731121 | Propulsive anti-torque system for rotorcraft A rotorcraft having an enhanced configuration in which a simple wing and a propulsive anti-torque system are combined is disclosed. The propulsive anti-torque system includes an anti-torque thruster system in which a variable pitch fan is installed internal to the t... | 06/08/2010 |
| 7644887 | Yaw control system and method A yaw control system and a method of controlling yaw for an aircraft are provided. The yaw control system includes a first wing set and a second wing set which are rotatable in opposite directions. Each of the wing sets includes at least two wings each including a p... | 01/12/2010 |
| 7621480 | De-rotation system for a counter-rotating, coaxial rotor hub shaft fairing A rotor hub fairing system includes an upper hub fairing, a lower hub fairing and a shaft fairing therebetween. The rotor hub fairing system is attached to the counter-rotating, coaxial rotor system through a bearing arrangement such that the shaft fairing may be po... | 11/24/2009 |
| 7607607 | De-rotation system suitable for use with a shaft fairing system A de-rotation system includes a first ring gear defined about an axis of rotation, a second ring gear defined about the axis of rotation and a gear set in meshing engagement with the first ring gear and the second ring gear to control a position of a housing about t... | 10/27/2009 |
| 7434764 | Variable speed gearbox with an independently variable speed tail rotor system for a rotary wing aircraft A gearbox of a rotary-wing aircraft includes at least one variable speed system which optimizes the main rotor speed for different flight regimes such as a hover flight profile and a high speed cruise flight profile for any rotary wing aircraft while maintaining an ... | 10/14/2008 |
| 7395988 | Rotor wing aircraft having an adjustable tail nozzle Aircraft including an airframe having a fuselage extending between a forward end and an aft end and a fixed wing extending laterally from the fuselage. The aircraft includes a power plant mounted on the airframe producing exhaust during operation. The aircraft inclu... | 07/08/2008 |
| 7338011 | Method making it possible to prevent vibration of a rudder of an aircraft and aircraft using this method A method for preventing vibration of a rudder of an aircraft may have, on a lateral aerodynamic surface of the aircraft's rudder, a protruding aerodynamic element capable of generating an aerodynamic effect tending to rotate the rudder about its articulation axis. A... | 03/04/2008 |
| 7278606 | Helicopter having a fusilage section and a tail section coupled thereto A helicopter having: a flow control device provided at one of a lower portion of a side surface of a fuselage and a portion on a lower surface of the fuselage near the side surface and extending downward. ... | 10/09/2007 |
| 7275711 | Gas-powered tip-jet-driven compound VTOL aircraft A compound Vertical TakeOff and Landing (VTOL) aircraft. In a specific embodiment, the VTOL aircraft includes a gas-powered tip-jet driven rotary-wing and a fixed-wing that is capable of providing necessary lift to the aircraft during certain forward-flight regimes ... | 10/02/2007 |
| 7249732 | Aerodynamically stable, VTOL aircraft A hover aircraft employs an air impeller engine having an air channel duct and a rotor with outer ends of its blades fixed to an annular impeller disk that is driven by magnetic induction elements arrayed in the air channel duct. The air-impeller engine is arranged ... | 07/31/2007 |
| 7231997 | Hybrid drive powered lift platform An air-based thrust recovery system for use in a powered lift platform utilizing fixed-pitch propellers is provided. The system utilizes an air compressor coupled to the drive motor of the platform and an on-board, high pressure tank for air storage. The fixed-pitch... | 06/19/2007 |
| 7219855 | Rising and moving apparatus and manufacturing method thereof A fluid-structure interactive analysis is performed while n types of wing structure models are caused to flap in accordance with a prescribed model of flapping manner. Based on an analysis, data 1, data 2, . . . data n of physical values related to flu... | 05/22/2007 |
| 7198223 | Ultralight coaxial rotor aircraft An ultralight coaxial dual rotor helicopter having a substantially L shaped frame. Attached to the back of the frame is a vertical shaft engine, and a pair of yaw paddles for controlling yaw of the craft. The drive shaft connects to a belt drive at the top of the fr... | 04/03/2007 |
| 7178757 | Motorcycle rider autogyro An autogyro, or aircraft with a rotating wing, has an airframe providing a motorcycle-like configuration for the rider. The motorcycle-like straddle-type seat locates the rider in front of the rotating wing, behind a teardrop shaped simulated fuel tank, and above th... | 02/20/2007 |
| 7147438 | Electric turbine An electric turbine includes a fan with a plurality of blades each with a tip having a permanent magnet positioned in the tip. The fan is mounted for rotation about an axis with the blades extending radially outwardly from the axis of rotation and with the tips adja... | 12/12/2006 |
| 7137591 | Tilting mast in a rotorcraft A rotorcraft includes a fuselage, a rotor assembly, a tail section connected to the fuselage, a propulsion system including an engine mounted to the fuselage, and a wing mounted to the fuselage. The rotor assembly includes a rotor having either a single or a plurali... | 11/21/2006 |
| 7121506 | Remotely controlled model airplane having deflectable centrally biased control surface A remotely controlled model airplane includes a receiver responsive to signals from a transmitter to control the direction of flight of the model airplane. The receiver, powered by a battery, demodulates the signal transmitted by the transmitter to selectively energ... | 10/17/2006 |
| 7104499 | Rechargeable compressed air system and method for supplemental aircraft thrust A system for providing aircraft thrust includes a compressor, operable to take in a quantity of air, reduce the volume of the air to generate compressed air, and to deliver the compressed air to a tank. The tank is coupled to the compressor and is operable to receiv... | 09/12/2006 |
| 7077358 | Helicopter with torque-correcting thruster device A helicopter having a torque-correcting thruster device. The helicopter has an aerodynamic body which has opposite side portions, a top portion and a bottom portion. The aerodynamic body has a cockpit and a pilot seat in the cockpit. The helicopter includes landing ... | 07/18/2006 |
| 7070145 | Tailboom-stabilized VTOL aircraft A disclosed flying craft includes a suspension structure having a first end and a second end, a lift unit, and a payload unit. The lift unit includes a nacelle and a tailboom, and pivotally couples to the first end of the suspension structure, and a payload unit cou... | 07/04/2006 |
| 7068210 | Low-cost position-adaptive UAV radar design with state-of-the-art cots technology A position-adaptive radar method and device for small UAV platforms capable of detecting “leakage signals” that, for example, propagate between two buildings or “leak through” penetrable surfaces such as walls or layers of the ground. The position-adaptive r... | 06/27/2006 |
| 7059562 | Vertical lift flying craft A disclosed vertical lift flying craft includes a lift unit that, during operation, develops a force including an upward component. A payload unit suspends from the lift unit. The payload unit suspends from the lift unit in such a way as to impart lateral stability ... | 06/13/2006 |
| 7058556 | Adaptive aero-thermodynamic engine model An adaptive aero-thermodynamic engine model is disclosed which incorporates a plurality of model engine operating parameters, a plurality of nominal component efficiencies and corresponding efficiency modifier functions. The engine model is adapted by measuring a pl... | 06/06/2006 |
| 7045702 | Solar-paneled windmill A solar-paneled windmill is provided having aerodynamic fan blades provided with solar panels. The windmill produces electricity using wind energy and solar energy. In another embodiment, magnets are provided to the solar-paneled windmill fan blades to generate magn... | 05/16/2006 |
| 7032860 | Emergency anti-torque thruster system An anti-torque thruster system implemented onboard an aircraft comprising a propulsion means coupled to the aircraft, wherein the propulsion means is capable of providing a measure of anti-torque thrust to the aircraft, a fuel storage container coupled to the propul... | 04/25/2006 |
| 7014142 | Low-drag rotor/wing flap Rotor/wing aircraft having a low-drag flap are disclosed. In one embodiment, a rotor/wing aircraft includes an elongated blade having a body portion and a flap portion. The body portion has first and second edges and includes a non-symmetric portion proximate the se... | 03/21/2006 |
| 7004427 | Retractable lifting blades for aircraft A rotor blade assembly for providing vertical lift to an aircraft, having a rotor head and a plurality of blades, with each blade attached to a mechanism such as a cam surface, whereby movement of the mechanism causes the radial distance between the distal tip of th... | 02/28/2006 |
| 6976654 | Vertical takeoff and landing aircraft A flight capable mobile platform adapted for covert deployment is provided. The mobile platform is additionally adapted to have a reduced vulnerability to hostile detection and aggression. The mobile platform includes a fuselage having a pair of sidewalls and a bott... | 12/20/2005 |
| 6929215 | Rotor system for helicopters A tail rotor system for a helicopter includes a gear box housing retainer (66) coupled to the tail boom (16) of the helicopter. The tail rotor system also includes a power-limiting device (50) configured to disconnect the tail rotor from a power... | 08/16/2005 |
| 6926231 | Vertical takeoff and landing aircraft A method is provided for reducing vulnerability to hostile detection of and aggression towards an aircraft. The method includes adapting an aircraft fuselage to form an armored payload bay, wherein the armored payload bay includes a pair of sidewalls and a bottom. T... | 08/09/2005 |
| 6869045 | Helicopter tail section and retrofit method A vertical stabilizer (38) is supported by and projects upwardly and rearwardly from the tail portion (14) of a helicopter fuselage (12). A tail rotor (TSR) is mounted on the vertical stabilizer (38) for rotation about a horizontal axis (... | 03/22/2005 |
