Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 8127544 | Two-stroke HCCI compound free-piston/gas-turbine engine This invention provides a compact, fuel-efficient internal combustion engine that can be used to provide rotating shaft output power to a wide variety of mobile and stationary applications. It is based on a two-stroke free-piston gas generator that implements the ho... | 03/06/2012 |
| 7852479 | Apparatus and method for measuring the fluorescence of large multi-cellular organisms Apparatus and methods for measuring the fluorescence of large multi-cellular organisms in a sample of liquid includes a pumping mechanism, a fluorescence measuring device, a method of analyzing the measurements, and optionally, a sorting mechanism. The pumping mecha... | 12/14/2010 |
| 7830928 | Quasi-phase matching and quantum control of high harmonic generation in waveguides using counterpropagating beams All-optical quasi-phase matching (QPM) uses a train of counterpropagating pulses to enhance high-order harmonic generation (HHG) in a hollow waveguide. A pump pulse enters one end of the waveguide, and causes HHG in the waveguide. The counterpropagation pulses enter... | 11/09/2010 |
| D622527 | Shelf unit | 08/31/2010 |
| 7750229 | Sound synthesis by combining a slowly varying underlying spectrum, pitch and loudness with quicker varying spectral, pitch and loudness fluctuations The present synthesizer generates an underlying spectrum, pitch and loudness for a sound to be synthesized, and then combines the underlying spectrum, pitch and loudness with stored Spectral, Pitch, and Loudness Fluctuations and noise elements. The input to the synt... | 07/06/2010 |
| 7729403 | High-order harmonic generation in a capillary discharge A pre-ionized medium created by a capillary discharge results in more efficient use of laser energy in high-order harmonic generation (HHG) from ions. It extends the cutoff photon energy, and reduces the distortion of the laser pulse as it propagates down the wavegu... | 06/01/2010 |
| 7718885 | Expressive music synthesizer with control sequence look ahead capability The present synthesizer includes functionality for changing over from a current note to the following notes that results in natural and expressive combinations and transitions. The method of the present invention incorporates an delay (actual, functional, or look ah... | 05/18/2010 |
| 7664147 | Phase matching of high order harmonic generation using dynamic phase modulation caused by a non-collinear modulation pulse Phase matching high harmonic generation (HHG) uses a single, long duration non-collinear modulating pulse intersecting the driving pulse. A femtosecond driving pulse is focused into an HHG medium (such as a noble gas) to cause high-harmonic generation (HHG), for exa... | 02/16/2010 |
| D585356 | Headlight bracket | 01/27/2009 |
| 7469454 | Mounting system for optical frequency reference cavities A technique for reducing the vibration sensitivity of laser-stabilizing optical reference cavities is based upon an improved design and mounting method for the cavity, wherein the cavity is mounted vertically. It is suspended at one plane, around the spacer cylinder... | 12/30/2008 |
| 7452111 | Variable focusing parabolic reflective lighting system A lighting system includes a bright bulb installed in front of a variable reflector assembly comprising a plurality of leaves. The leaves have some overlap and are pivotally attached near the base of the bulb, so that they can be collapsed inward or expanded outward... | 11/18/2008 |
| 7296408 | Heat engine The heart of a heat engine is a reciprocating expansion chamber, which converts heat from a hot fluid into mechanical work. The expansion chamber utilizes a refrigerant in a liquid state as an input, and heats and expands the refrigerant to move pistons and generate... | 11/20/2007 |
| 7277053 | Apparatus and methods for detecting and locating signals A discrete three-dimensional receiving element has multiple sensors scattered over its surface to detect and locate a signal. The sensors facing the signal detect the signal, and a boundary line is drawn between the sensor which detect the signal and those which don... | 10/02/2007 |
| 7271331 | Musical synthesizer with expressive portamento based on pitch wheel control The present invention is a musical synthesizer that can respond to a pitch wheel control by generating realistic slide-step-slide and slide-step portamento pitch curves. The musical synthesizer responds to a pitch wheel control in a context sensitive manner. When a ... | 09/18/2007 |
| 7264370 | Light emitting diode roadway lighting system A system for lighting roadways utilizes LED lighting systems recessed into roadside barriers. The LED lighting element includes a number of LEDs fixed in an elongated formation. The LED lighting element is inserted into the barrier's recessed area in a generally ver... | 09/04/2007 |
| 7252127 | Reflecting bicycle tires Bicycle wheels have integral reflective areas to increase visibility of the bicycle. These areas show through portions of the wheel tread, so that the tread protects the reflector material from wear. The reflecting areas are scattered over the wheel and situated at ... | 08/07/2007 |
| 7242520 | Method for optimizing output in ultrashort-pulse multipass laser amplifiers with selective use of a spectral filter A method for optimizing multipass laser amplifier output utilizes a spectral filter in early passes but not in later passes. The pulses shift position slightly for each pass through the amplifier, and the filter is placed such that early passes intersect the filter ... | 07/10/2007 |
| 7228699 | Plate heat and mass exchanger with edge extension Heat exchanger plates for indirect evaporative coolers, of the type having a dry side having low permeability to an evaporative liquid and formed to allow a product fluid to flow over a heat transfer area of its surface, a wet side designed to have its surface wet b... | 06/12/2007 |
| 7210487 | Three dimensional nail stencils and method of use A three dimensional stencil for use in applying raised acrylic designs to nails comprises a generally flat, flexible portion adapted for contact with a portion of a fingernail or toenail, and a cut-out portion formed within the confines of the flexible portion. The ... | 05/01/2007 |
| 7197887 | Method and plate apparatus for dew point evaporative cooler An improved method and apparatus for indirect evaporative cooling of a fluid stream to substantially its dew point temperature. Plate heat exchanger has perforations 11 and channels 3, 4 and 5 for gas or a low temperature for liquids on a dry si... | 04/03/2007 |
| 7161665 | High resolution imaging fountain flow cytometry An imaging fountain flow cytometer allows high resolution microscopic imaging of a flowing sample in real time. Cells of interest are in a vertical stream of liquid flowing toward one or more illuminating elements at wavelengths which illuminate fluorescent dyes and... | 01/09/2007 |
| 7152467 | Parallel seismic depth testing using a cone penetrometer A parallel seismic tester utilizing a cone penetrometer to test the depth of a foundation or the like comprises three important elements: the cone penetrometer which houses a receiver, an impactor to impact the structure, and data gathering and analyzing equipment. ... | 12/26/2006 |
| 7125160 | Led light collection and uniform transmission system using a conical reflector with a roughed up inner surface Apparatus for collecting light from an LED and transmitting it in a near-uniform column incudes a conical reflector having a roughed up inner surface about the base of the LED for collecting light emitted to the sides of the LED, and a lens specially designed to foc... | 10/24/2006 |
| 7072101 | Downchirped pulse amplification An ultrashort pulse amplifier produces high-power ultrafast laser pulses. Pulses first have net negative (i.e. blue to red) chirp applied, and are then amplified in a laser amplifier. After amplification, the pulses are compressed using propagation through a block o... | 07/04/2006 |
| 7058182 | Apparatus and methods for hearing aid performance measurement, fitting, and initialization A digital hearing aid according to the present invention is capable of measuring its own performance. The measurement and initialization capability may be entirely integral to the hearing aid, or an external processor may be used to download the measurement program ... | 06/06/2006 |
| 6888976 | Hitless tuning apparatus and methods for add/drop filters Switch devices for hitless tuning or reconfiguring an add or drop WDM filter. The input light is switched from the filter (where the desired channel is passed and the express channels are reflected) to a mirror where all channels are reflected. The switching is done... | 05/03/2005 |
| 6831935 | Multistage synchronization of pulsed radiation sources Accurate and efficient synchronization of two pulsed radiation sources (e.g. iwo mode locked lasers) is accomplished in stages. Rough synchronization is accomplished by synchronizing (for example) the fundamental repetition rate of the two lasers. Fine synchronizati... | 12/14/2004 |
| 6827475 | LED light collection and uniform transmission system Apparatus for collecting light from an LED and transmitting it in a near-uniform column incudes a conical reflector about the base of the LED for collecting light emitted to the sides of the LED, and a lens specially designed to focus the collected light into a near... | 12/07/2004 |
| 6804287 | Ultrashort pulse amplification in cryogenically cooled amplifiers A laser amplifier system amplifies pulses in a single “stage” from ˜10−9 joules to more than 10−3 joules, with average power of 1-10 watts, and beam quality M2 | 10/12/2004 |
| 6795654 | Tunable add/drop filter A precise, tunable, low loss add/drop filter for use in fiber optic communication systems utilizes a cascaded system of Mach Zender-like stages, along with reflective elements to return passed channels to the output pass+add signal while transmitted signal(s) appear... | 09/21/2004 |
| 6792114 | Integrated hearing aid performance measurement and initialization system A digital hearing aid according to the present invention is capable of measuring its own performance. The hearing aid includes a test signal generator for feeding a test signal into the hearing aid amplifier. The response to the test signal is acquired at a specific... | 09/14/2004 |
| 6779351 | Fuel cell systems with evaporative cooling and methods for humidifying and adjusting the temperature of the reactant streams A fuel cell using fuel and oxidant resulting in the production of water and heat in addition to electrical power. The fuel cell employs an evaporative cooler and has methods to adjust the moisture and temperature for the fuel and oxidant flows to improve the fuel ce... | 08/24/2004 |
| 6781757 | Polarization insensitive tunable optical filters A polarization insensitive tunable optical filter system combines an interference filter or the like with a quarter wave plate and a retro-reflector. The retro-reflector is situated and aligned to intercept light reflected from the filter, and the quarter wave plate... | 08/24/2004 |
| 6776001 | Method and apparatus for dew point evaporative product cooling The present invention relates to a method and an apparatus for providing enhanced indirect evaporative cooling of air, water, fuel, or other fluids while controlling the humidity. The design makes cooling down to the dew point possible without energy input other tha... | 08/17/2004 |
| 6765656 | Apparatus and methods for high throughput analysis of samples in a translucent flowing liquid Apparatus and methods for imaging multiple fluorescent sample particles in a flow channel. A flow channel defines a flow direction for samples in a flow stream and has a viewing plane perpendicular to the flow direction. A clear volume between the illuminated flow v... | 07/20/2004 |
| 6734681 | Apparatus and methods for testing circuit boards Methods and apparatus are disclosed for detecting manufacturing defects on unpopulated printed circuit boards under test (BUT) utilizing reliable single point current measurement. In a first set of preferred embodiments, an AC signal generator is connected to a sign... | 05/11/2004 |
| 6727712 | Apparatus and methods for testing circuit boards Methods and apparatus are disclosed for detecting manufacturing defects on unpopulated printed circuit boards under test (BUT) utilizing reliable single point current measurement. In a first set of preferred embodiments, an AC signal generator is connected to a sign... | 04/27/2004 |
| 6705096 | Method and plate apparatus for dew point evaporative cooler using a trough wetting system An improved method and apparatus for indirect evaporative cooling of a fluid stream to substantially its dew point temperature. Plate heat exchanger has perforations (11) and channels (3, 4 and 5) for gas on a dry side and wet side. There is a t... | 03/16/2004 |
| 6672373 | Method of action of the pulsating heat pipe, its construction and the devices on its base By construction of heat pipes with two phase heat carrying fluid, an efficient heat transfer system is available. The heating section is used to create, within the heat pipe, build up of vapor pressure which causes the heat carrying fluid to move which th... | 01/06/2004 |
| 6597829 | 1xN optical fiber switch A 1×N optical switch according to the present invention switches between output fibers without the need for active alignment by utilizing two beam deflecting stages, for example first passing the input beam through a translating element and then through ... | 07/22/2003 |
