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| Number | Title | Issue Date |
| 7771176 | Micropump and method for the production thereof The invention relates to a micropump comprising a pump membrane (5) which can be moved by modifying the volume of a pump chamber which is adjacent to the pump membrane (5) and a base part (1), also comprising two valves which are arranged in rec... | 08/10/2010 |
| 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 |
| 7258464 | Integral ballast lamp thermal management method and apparatus A lamp having a lighting source, integral electronics, and a thermal distribution mechanism disposed in a housing. The thermal distribution mechanism may include a For example, the lamp may include a thermal shield between the lighting source and the integral electr... | 08/21/2007 |
| 7243549 | Acoustic wave lubricity sensor A lubricity sensor includes a flexural plate wave device and a face shear mode bulk acoustic wave device, which is associated with and located proximate to the flexural plate wave device. The face shear mode bulk acoustic wave device and the flexural plate wave devi... | 07/17/2007 |
| 7211923 | Rotational motion based, electrostatic power source and methods thereof A power system includes a member with two or more sections and at least one pair of electrodes. Each of the two or more sections has a stored static charge. Each of the pair of electrodes is spaced from and on substantially opposing sides of the member from the othe... | 05/01/2007 |
| 7204615 | LED light with active cooling An LED light assembly includes a housing, an LED disposed in the housing, a heat dissipating structure and a fluid current generator. The LED is in thermal communication with the heat dissipating structure and includes a flow path surface. The fluid current generato... | 04/17/2007 |
| 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 |
| 7118356 | Fluid pump with a tubular driver body capable of selective axial expansion and contraction A fluid pump for pumping fluid. The fluid pump includes a driver having a substantially tubular shaped body defining a body axis and, a number of elements circumferentially spaced around the body. Each element is responsive to a signal to so as cause a corresponding... | 10/10/2006 |
| 7108197 | Droplet ejector with oscillating tapered aperture A fluid injection device for ejecting fluid droplets in response to electrical signals comprises an oscillating surface that has one or more tapered apertures, each aperture having a first and second opening. The first opening of each aperture is larger than the sec... | 09/19/2006 |
| 7031155 | Electronic thermal management Piezoelectric fan assemblies are provided to provide a conduction path and forced convection for space-limited electronic devices in accordance with embodiments of the present invention. The fan blade of a piezoelectric fan is thermally coupled to the heat source, s... | 04/18/2006 |
| 7023065 | Capacitive resonators and methods of fabrication A micro-electro-mechanical system (MEMS) capacitive resonator and methods for manufacturing the same are invented and disclosed. In one embodiment, a method comprises forming trenches in a substrate, conformally coating the substrate with an oxide, filling the coate... | 04/04/2006 |
| 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 |
| 6937472 | Apparatus for cooling heat generating components within a computer system enclosure An apparatus including a heat pipe having an evaporator portion and a condenser portion, the evaporator portion to be thermally coupled to a heat generating component; and an actuation membrane unit to generate air movement in a direction of the condenser portion of... | 08/30/2005 |
| 6909221 | Piezoelectric on semiconductor-on-insulator microelectromechanical resonators A piezoelectric resonator is disclosed. In one embodiment the piezoelectric resonator includes a resonating member having a bi-directionally adjustable resonance frequency, the resonating member including a semiconductor material of a semiconductor-on-insulator wafe... | 06/21/2005 |
| 6886509 | Hydraulic actuator for actuating a gas exchange valve of an internal combustion engine The invention relates to a hydraulic actuator for actuating a gas exchange valve (1) of an internal combustion engine, which valve is especially closed by the effect of a spring. The actuator is configured by a feed pump (6) with intermittent and thus ... | 05/03/2005 |
| 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 |
| 6116517 | Droplet mist generator In a pump chamber connected to a liquid supply, an overlapping piezoelectric flexural transducer is disposed so that when voltage pulses are applied to produce an excursion, a number of droplets can be expelled from a nozzle array in the housing wall of t... | 09/12/2000 |
| 5941694 | Fluid conveying apparatus having multiple piezoelectric driven blades In a fluid conveying apparatus in which there is provided, in a flow passage of a fluid, a platelike oscillator which is vibrated with an upstream end thereof, as seen in a flow direction of the fluid, as a fixed end and a downstream end thereof as a free... | 08/24/1999 |
| 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 |
| 5381950 | Zone sensor or thermostat with forced air A wall mounted thermostat or zone sensor designed for sensing the temperature in the zone in which the thermostat is mounted. The thermostat is in communication with and controls a heating, ventilation and air conditioning system. The thermostat includes ... | 01/17/1995 |
| 5277556 | Valve and micropump incorporating said valve A valve is formed by machining a silicon wafer 18 bonded to a glass wafer 2. This machining forms a membrane 44 and a sealing ring. Part of the surface of the membrane 44 and optionally the sealing ring are oxidized in order to impart a mechanical pre-ten... | 01/11/1994 |
| 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 |
| 4753579 | Ultrasonic resonant device An ultrasonic wave generator includes a resonant member tapered to a thin edge, the member having a Q of about 300 or more.... | 06/28/1988 |
| 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 |
| 4595338 | Non-vibrational oscillating blade piezoelectric blower A non-vibrational oscillating blade piezoelectric blower is disclosed, including: a piezoelectric bender and means for supporting the piezoelectric bender at its inertial nodes. Weights may be attached to the bender to control the location of the inertial... | 06/17/1986 |
| 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 |
