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 |
| 7229255 | Fan with driving gear A ceiling fan suspended from a mounting rod and comprising a transverse support. A pair of hanging fans are distally mounted on the transverse support. A motor fixed to the mounting rod and spaced radially therefrom drives a gyro gear about an axis parallel to and s... | 06/12/2007 |
| 7183680 | Fan with driving gear A ceiling fan suspended from a mounting rod and comprising a transverse support. A pair of hanging fans are distally mounted on the transverse support. A motor fixed to the mounting rod and spaced radially therefrom drives a gyro gear about an axis parallel to and s... | 02/27/2007 |
| 7093788 | Rotating flying wing aircraft and control system A rotating wing aircraft has a rotating fuselage and wings. The aircraft is configured to rotate with the air passing over the wings because of the rotation providing the lift needed to keep the aircraft aloft. The wings have rudders coupled to them, such as at the ... | 08/22/2006 |
| 7077629 | Multi-fan assembly A multi-fan assembly whose revolution speed can be controlled by a member fan designed with a reverse rotating structure, which includes a housing in which is provided a rotatable member; a positive-rotation member fan is equipped with a positive-rotation motor, the... | 07/18/2006 |
| 7052242 | Multi-fan assembly comprising a servomotor driven vertical oscillation means for each fan A multi-fan assembly includes: a down rod assembly having a first end for fixing to a ceiling wall and having a second end provided with a canopy, a rotary assembly being fixed to a lower end of the down rod assembly and covered by the canopy. At both sides of the r... | 05/30/2006 |
| 7040244 | Watercraft having plural narrow hulls and having submerged passive flotation devices A watercraft has at least two narrow hulls with a shallow draft and has one or more passive flotation devices that are entirely submerged. The hulls enclose the power trains for the watercraft and are accessible from the compartments of the watercraft. The passive f... | 05/09/2006 |
| 6963802 | Method of coordinating and stabilizing the delivery of wind generated energy The invention relates to a method of coordinating and stabilizing the delivery of wind generated power, such as to a power grid, so as to avoid sudden surges and spikes, despite wind speed fluctuations and oscillations. The method preferably uses a plurality of wind... | 11/08/2005 |
| 6927503 | Method and apparatus for using wind turbines to generate and supply uninterrupted power to locations remote from the power grid The present invention relates to a wind energy generating and storing system comprising methods and apparatuses for providing energy dedicated for immediate use and energy storage, to provide electrical power on an uninterrupted and continous basis, to locations rem... | 08/09/2005 |
| 6913443 | Oscillating means for multi-fan assembly An oscillating arrangement for a multi-fan assembly includes a down rod assembly which is provided for connecting to a hanging assembly, on the hanging assembly is provided two sets of fixing arms which extend outwardly, two member fans are respectively mounted to t... | 07/05/2005 |
| 6832902 | Fan with driving gear A ceiling fan suspended from a mounting rod and comprising a transverse support. A pair of hanging fans are distally mounted on the transverse support. A motor fixed to the mounting rod and spaced radially therefrom drives a gyro gear about an axis parallel to and s... | 12/21/2004 |
| 6641367 | Wind energy conversion apparatus A wind energy conversion apparatus comprising a supporting structure including a number of spokes, which is rotatably journalled on a horizontal main shaft, wherein auxilliary rotors having an at least substantially circular plane of inflow are mounted on... | 11/04/2003 |
| 6602054 | Fluid motor apparatus for amplifying thrust An array of axially spaced rotating airfoils having funnel strips on the blades to increase the lift to drag ratio and generate thrust are rotatably driven by small motors with rotating airfoils, also having funnel strips to enhance thrust. The small moto... | 08/05/2003 |
| 6468036 | Adjustable crank of swinging mechanism An adjustable crank for adjusting the swinging-angle of a fan comprises a first and a second eccentric disks, the first disk is rotatablely inserted in the second disk, a ring-shape spring is disposed between the engaging surfaces of them to couple them w... | 10/22/2002 |
| 5037268 | Dual axis wind turbine The invention relates to our energy conversion system for converting the kinetic energy possessed by the wind into mechanical energy. The objective is to produce a controlled, tornado like, turbulence around a turbine. This is accomplished by using a defl... | 08/06/1991 |
| 4735552 | Space frame wind turbine A new design for large wind turbines permitting a substantial reduction in weight and cost. Lightweight airfoils comprising the turbine blades are supported within an extensive space frame system which eliminates the large bending moments to which the bla... | 04/05/1988 |
| 4702437 | Electric air-driven helicopter A helicopter has a low profile electric motor mounted in each of the rotor blades to drive a cross-flow fan which draws air in through a slot at the leading edge of the blade and forces it out through an opposing slot adjacent the trailing edge of the bla... | 10/27/1987 |
| 4585392 | Bladed rotor system and pitch controls therefor A rotor system for a helicopter having a power shaft carrying at least one pair of diametrically opposite frames for rocking motion about an axis radially of said shaft. Sets of lift blades carried by the frames, respectively, for rocking motion about rad... | 04/29/1986 |
| 4560321 | Ceiling fan A ceiling fan includes auxiliary vanes pivotally connected to the opposite ends of its main vanes, wherein each auxiliary vane is pivotally connected to a common bracket unit through a pull rod at its opposite end to the main vanes. The bracket unit is ca... | 12/24/1985 |
| 4525125 | Pressure responsive pump control system having an alarm lamp A pump control system has a vacuum pump driven by a DC motor to supply a negative pressure to a container first power and driving transistors which are interconnected to energize the DC motor, second power and driving transistors which are interconnected ... | 06/25/1985 |
| 4509899 | Traversing blade-rotary propeller A traversing blade rotary propeller useful as a propulsion system for various types of boats and aircraft or as a wind or water actuated turbine. A traversing blade rotary propeller of this type includes a stationary main shaft, a mount to which an end of... | 04/09/1985 |
| 4482110 | Cyclorotor composite aircraft A composite aircraft comprising a system of airfoils rotating about a horizontal axis providing lift and thrust in combination with a lighter-than-air gas containment bag providing bouyant lift; said aircraft being capable of lifting and transporting a lo... | 11/13/1984 |
| 4450364 | Lighter than air wind energy conversion system utilizing a rotating envelope A lighter-than-air (LTA) wind energy conversion system (WECS) wherein the LTA envelope carries a main rotor and electrical generator to take advantage of high wind speeds available at high altitudes. The LTA envelope is adapted to rotate with the main rot... | 05/22/1984 |
| 4311918 | Wind powered generator with gravity assisted mechanical advantage booseter The wind powered mechanical and electric power generator, is a process and apparatus which uses the mechanical advantage of a lever arm to multiply the energy of a moving or mobile weight which is wind powered from a propeller drive, and converts by gravi... | 01/19/1982 |
| 4302152 | Anti-moment gyro for windmill An improvement to rotating blades is disclosed in a device that will impose anti-moment forces and result in less stress in the said rotating member. The device consists of a rotating body or gyro which is attached to the said rotating blades, and due to ... | 11/24/1981 |
