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 |
| 7321184 | Rake shaped fan In some embodiments, a piezoelectric actuator is coupled to a blade having a rake shape. The blade may include a base with two or more prongs extending therefrom. At least a portion of one or more prongs may be positioned between the fins of a heat sink. Other embod... | 01/22/2008 |
| 7248475 | Wireless device enclosure using piezoelectric cooling structures An enclosure for a wireless device includes a first compartment and a second compartment. The first compartment is to house some or all of the electronic circuitry of the wireless device and is sealed from an exterior environment. The second compartment is adjacent ... | 07/24/2007 |
| 7211986 | Inductive charging system An apparatus for inductive charging a battery. The apparatus includes a housing with a lower surface and a charging surface. A rechargeable device with a rechargeable battery may be placed on the charging surface. The apparatus further includes a controller for driv... | 05/01/2007 |
| 7195393 | Micro fluidic valves, agitators, and pumps and methods thereof A valve which has a structure with at least one opening and a member which has a fixed static charge and also has a first position exposing the opening and a second position sealing the opening. A method for making the valve includes providing a structure with at le... | 03/27/2007 |
| 7101159 | Valveless pump The invention relates to a pump which comprises a tube (4) through which a fluid is delivered, and a device (2) for producing transverse oscillations in the fluid. On the inlet side (5), the tube (4) has a first section (1) with an... | 09/05/2006 |
| 7023697 | Actuation membrane for application to a card slot of a system An apparatus including an actuation membrane unit to generate air movement in a direction of a heat generating device to reduce an ambient temperature of the device. ... | 04/04/2006 |
| 6948473 | 4-cycle, rotary, electromagnetic, internal combustion engines Four-cycle rotary engines, with an even number of hinged-hub impeller vanes, utilize dependently rotating, joined, hinged-hub impellers, with interdigitated, alternating hub sections, on a shared, power output shaft, and electromagnetic fields, and timing of impelle... | 09/27/2005 |
| 6938678 | Arrangement for liquid cooling an electrical assembly using assisted flow An arrangement for cooling an electronic assembly includes a circuit board, an enclosure member and at least one electromechanical actuator. The circuit board has a first surface, a second surface, and at least a first heat-generating element secured to the first su... | 09/06/2005 |
| 6669454 | Microfluidic actuation method and apparatus Control of fluid motion within microcavities is carried out using microstructures in the cavities having cantilever elements that are coupled to a substrate to receive vibrations therefrom. The cantilever elements can be excited into resonance at one or m... | 12/30/2003 |
| 6659740 | Vibrating membrane fluid circulator A fluid circulator made up of an admission orifice, a pump body and a delivery orifice, the pump body having two rigid walls defining therebetween a circulation space for fluid circulation from the admission to the delivery orifice. A deformable membrane ... | 12/09/2003 |
| 6485273 | Distributed MEMS electrostatic pumping devices A MEMS pumping device driven by electrostatic forces comprises a substrate having at least one substrate electrode disposed thereon. Affixed to the substrate is a moveable membrane that generally overlies the at least one substrate electrode. The moveable... | 11/26/2002 |
| 6247905 | Method and apparatus for actively controlling a micro-scale flexural plate wave device An actively controlled flexural plate wave device provides a micro-scale pump. A method of actively controlling a flexural plate wave device produces traveling waves in the device by coordinating the interaction of a magnetic field with actively controlle... | 06/19/2001 |
| 6050790 | Electric waving fan with oscillating multi-direction fan vane element An electric waving fan includes a single air moving fan vane element, a motor for generating power, a transmission apparatus for converting the power to motion, and a power output assembly for moving the single fan vane element simultaneously in two direc... | 04/18/2000 |
| 5921757 | Piezoelectric fan A piezoelectric fan comprises at least one piezoelectric element having a rectangular piezoelectric plate of large aspect ratio, made from a piezoelectric material, and conductive metal layers provided on both surfaces of the piezoelectric plate. At least... | 07/13/1999 |
| 5820342 | Fluid forcing device with a fluted roller drive A fluid forcing device comprising many rotatable slender elements that converts mechanical energy into fluid energy by mechanically arranging and maintaining, at all time, the rotatable slender elements in a predetermined wave form and by mechanically mov... | 10/13/1998 |
| 5611666 | Fluid forcing device A fluid forcing device comprising many rotatable slender elements that converts mechanical energy into fluid energy by mechanically arranging and maintaining, at all times, the rotatable slender elements in a pre-determined wave form and by mechanically m... | 03/18/1997 |
| 5302092 | Fluid transferring apparatus imitating flapping movement of bees A fluid transferring apparatus achieves a two-dimensional flow of fluid with high efficiency and at low noise by imitating a Weis-Fogh mechanism with use of a simple mechanism. In the fluid transferring apparatus, a wing assembly X comprised of a predeter... | 04/12/1994 |
| 5104626 | Vibrating diffusion type aromatic device A vibrating diffusion type aromatic device is disclosed. The device includes a vibrating unit including a magnetic reed. An aromatic plaque having an aroma is mounted on the reed. A magnetic device including a coil for attracting the magnetic reed for spr... | 04/14/1992 |
| 5008582 | Electronic device having a cooling element In an electric device having a package included an electric circuit element therein, a cooling fan is fixed on the package directly. The fan is formed of piezoelectric elements and a flexible cooling fin. The fan generates the cooling air flow due to vibr... | 04/16/1991 |
| 4923000 | Heat exchanger having piezoelectric fan means A fluid heat exchanger for cooling an electronic component including a housing having a fluid inlet and fluid outlet. Piezoelectric means are connected to a plurality of flexible blades for pumping fluid from the inlet to the outlet. A heat conductive str... | 05/08/1990 |
| 4834619 | Ducted oscillatory blade fan A duct for use with an oscillating fan blade has a preferred height which is a function of the blade height and a preferred width which is related to the maximum excursion of the blade leading edge. The duct is positioned at a preferred gap distance which... | 05/30/1989 |
| 4780062 | Piezoelectric fan A piezoelectric fan includes a tuning-fork type vibrator having two sides. A first piezoelectric element is formed on each of the two sides of the vibrator. Further, an exciting electrode is formed on each of these first piezoelectric elements. Also, a fe... | 10/25/1988 |
| 4768714 | Portable sprayer with leak control and agitator A pressure vessel for a backpack agricultural sprayer is mounted within a container of the sprayer and connected to the sprayer pump so that liquid from the container is forced under pressure into the pressure vessel for a spraying discharge therefrom. Le... | 09/06/1988 |
| 4684328 | Acoustic pump An acoustic pump including a resonant member having low internal damping and asymmetrically tapered to a thin edge; a piezoelectric driver mounted on the resonant member; and means for applying an alternating voltage to the piezoelectric driver in the res... | 08/04/1987 |
| 4498851 | Solid state blower A pumping device comprising: a housing; piezoelectric element having one end mounted to the housing and one end free; a generally planar impeller blade connected to the free end of the piezoelectric element and having its distal end unconstrained by the h... | 02/12/1985 |
| 4435131 | Linear fluid handling, rotary drive, mechanism Fluid handling mechanism has a vane with parallel side edges coupled to a crank at one end and to an obliquely transverse guide track at the other end. The vane is closely runningly fitted, between parallel side walls and curved top and bottom walls, exec... | 03/06/1984 |
| 4384830 | Methods of and/or apparatus for displacing fluids A method of and apparatus for displacing fluids in which a housing is provided which has an end wall and an opening opposite the end wall. A blade is positioned in the housing and rectilinear motion is imparted to the blade so that one end of the blade is... | 05/24/1983 |
| 4063826 | Flexible, oscillating blade liquid pump A pump for conveying liquid, especially resonance pump, which comprises an alternating current operable oscillating armature which is supported by a leaf spring, and also comprises an elastically flexible thin-walled plate which is likewise supported by t... | 12/20/1977 |
