Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 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 |
| 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 |
