Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8164348 | Method and apparatus for tuning delay Aspects of the disclosure can provide an integrated circuit (IC) chip. The IC chip may adjust delays at its interface to compensate for outside transmission line delays. The interface of the IC chip can include a plurality of input/output (IO) modules coupled to a p... | 04/24/2012 |
| 8093912 | Microwave device for controlling material The invention relates to a device for controlling a material, the device including at least one transmitter for transmitting an electromagnetic signal at a carrier frequency Fp to illuminate the material and one receiver for receiving the electromagnetic signal, whe... | 01/10/2012 |
| 8049517 | Sensor and method for detecting a substance A sensor for detecting a substance in a physical space, having an RF energy emitter fed by a signal source on one side of the space and an RF energy receiving element coupled to a detector at an opposite side of the channel, spaced apart by a distance (r) selected s... | 11/01/2011 |
| 8049516 | Apparatus and method for detecting a discontinuity within a non-biological element located within a biological structure Apparatus for detecting a discontinuity within a non-biological element located within a biological structure, the apparatus comprising: a microwave energy source; a first antenna coupled to the microwave energy source and arranged to transmit the microwave energy i... | 11/01/2011 |
| 8030948 | Device for analyzing the composition of the contents of a container comprising means for obtaining at least one additional physical datum relating to the container A device for analyzing the contents of a container includes electromagnetic field emitting/receiving means (40) at least several frequencies in a determined range of frequencies, means (22) supporting a container (R), the contents of which have to be a... | 10/04/2011 |
| 7982470 | Microwave probe device A probe for obtaining a measure of one or more properties in a sample wherein the probe including a support member (2), a transmit antenna (4), a receive antenna (5) and a signal barrier (6). The signal barrier (6) is located betwe... | 07/19/2011 |
| 7906975 | Methods and apparatus for the non-destructive detection of variations in a sample Non-invasive THz spectroscopic apparatus and methods are provided for detecting and/or identifying constituents such as variations in a structural entity where chemical or biological entities can reside. Position dependent scattering of THz radiation is employed to ... | 03/15/2011 |
| 7812617 | System and method for detecting and locating faults in electronic communication bus systems System and method for detecting a fault in a faulty network element of a bus network comprising two or more transmitters. The method comprises transmitting from one of the transmitter a signal of predetermined parameters to the bus network; receiving the signal; and... | 10/12/2010 |
| 7759946 | Waveguide, and device and detection method using the same A waveguide includes a single line formed by a conductive material for propagating an electromagnetic wave including at least a part of a frequency band of 30 GHz or more and 30 THz or less, a first dielectric member covering the single line, and a second dielectric... | 07/20/2010 |
| 7679375 | System and method for detecting foreign objects in a product A system for detecting a change in material composition in a product including a microwave transmitter emitting a microwave signal at a predetermined microwave frequency composition, and an ultrasonic transmitter emitting an ultrasound signal at a predetermined ultr... | 03/16/2010 |
| 7633299 | Inspection apparatus using terahertz wave An inspection apparatus has a configuration which can suppress attenuation of an electromagnetic wave caused by an environment surrounding the inspection apparatus and can readily prevent an unwanted substance from being contaminated into a propagation path of the e... | 12/15/2009 |
| 7482818 | Systems and methods for detecting the presence and/or absence of a solid liquid or gas Systems and methods are described for detecting the presence and/or absence of a solid, liquid or gas which utilize an RF energy emitter and RF energy detector for determining whether a solid, liquid or gas is present within a defined physical space. More specifical... | 01/27/2009 |
| 7442935 | Device for analyzing the composition of the contents of a container The present invention relates to a device for analyzing the composition of the contents of a receiver comprising: means (40) for emitting/receiving an electromagnetic field at a variable frequency over a determined frequency range, means (22) for suppo... | 10/28/2008 |
| 7439748 | Method and apparatus for measuring high-frequency electrical characteristics of electronic device, and method for calibrating apparatus for measuring high-frequency electrical characteristics A signal conductor whose first end is an open end, and a ground conductor are connected to associated measurement ports of a network analyzer. A short standard is connected between the signal conductor and the ground conductor at least three points in the longitudin... | 10/21/2008 |
| 7417440 | Methods and systems for the rapid detection of concealed objects The present invention provides for an improved scanning process having microwave arrays comprised of microwave transmitters in radiographic alignment with microwave receivers. The microwave array emits controllably directed microwave radiation toward an object under... | 08/26/2008 |
| 7394262 | Device for analyzing the composition of the contents of a container The present invention relates to a device for analyzing the composition of the contents of a receiver comprising: means (40) for emitting/receiving an electromagnetic field at a variable frequency over a determined frequency range, means (22) for suppo... | 07/01/2008 |
| 7378855 | Bi-directional three-Dimensional microwave scanning and volumetric mapping of a whole roll or pallet of paper Bi-directional (longitudinal and angular) three-dimensional volumetric microwave scanning of a whole roll or pallet of paper (FIGS. 3, 4), including three-dimensional volumetric mapping of internal properties and characteristics (moisture content, density, ma... | 05/27/2008 |
| 7367226 | Interface detection apparatus and method for detecting hidden interface using microwave An interface detection apparatus detects a position of a hidden interface between first and second materials, the first material having a different physical property from the second material. The apparatus encompasses (a) an irradiation mechanism configured to irrad... | 05/06/2008 |
| 7358888 | System and method for intrusion detection using a time domain radar array A system and method for highly selective intrusion detection using a sparse array of time modulated ultra wideband (TM-UWB) radars. Two or more TM-UWB radars are arranged in a sparse array around the perimeter of a building. Each TM-UWB radar transmits ultra wideban... | 04/15/2008 |
| 7353695 | Methods and apparatus for determining properties of a fluid A method and system for determining properties of a fluid involves interacting the fluid with a standing wave in a first state to establish the standing wave in a second state, analyzing an electric signal associated with the standing wave to determine a characteris... | 04/08/2008 |
| 7340292 | Breast cancer detection system A method for detecting breast cancer can include the step of positioning a transmitting antenna and a receiving antenna about a breast so that the transmitting antenna is positioned to transmit microwave energy into the breast and the receiving antenna is positioned... | 03/04/2008 |
| 7329039 | Systems and methods for determining a state of fluidization and/or a state of mixing Apparatus and methods are disclosed for treating a sample by selectively controlling sonic energy and/or selectively controlling the location of the sample relative to the sonic energy. ... | 02/12/2008 |
| 7309995 | Noncontact conductivity measuring instrument The present invention relates to measurement of conductivity. A microwave oscillated by an oscillator using a Gunn diode is applied through an isolator, a circulator, and a horn antenna to a silicon wafer. The isolator is used for reducing the standing wave influenc... | 12/18/2007 |
| 7310586 | Metal detector with data transfer A metal detector adapted to generate a transmit search signal and to receive a receive search signal, and to analyse such received search signal, wherein the detector is adapted to allow a selection of operating parameters for each of these functions, said selection... | 12/18/2007 |
| 7307431 | System and method for microwave non-destructive inspection A system and method for inspecting a composite structure, such as to assess thermal degradation or resin curing, are provided in which the dielectric constant of the composite structure is determined using a microwave inverse scattering technique. The dielectric con... | 12/11/2007 |
| 7302844 | Measurement element for determining a flow rate The flow rate of a fluid flowing around a measuring element is measured using a guide for guiding an electromagnetic wave along the longitudinal extension thereof and at least one electric heating element that is placed adjacent to the guide. The guide can be heated... | 12/04/2007 |
| 7298152 | Damage detection system A damage detection system includes a processor and a transmitter communicatively connected to the processor. The transmitter sends a signal to the processor and the processor is programmed to assign a spatial coordinate to the transmitter. The processor is further p... | 11/20/2007 |
| 7288944 | Evanescent waveguide apparatus and method for measurement of dielectric constant A dielectric constant waveguide measuring apparatus preferably comprises a rectangular waveguide aperture on each end with a width a and height b. The waveguide frame is preferably split to permit the waveguide to be opened for insertion of the unknown material into... | 10/30/2007 |
| 7281412 | In-situ seal integrity monitoring A high-temperature seal having in-situ integrity monitoring capability includes a quantity of dielectric material sealing an interface between adjacent structures and an electrical transmission line embedded within the dielectric material. A signal injection port is... | 10/16/2007 |
| 7274326 | System for digital multi-bandwidth intermediate frequency processing and tracking Signal processing systems for radar installations are provided for simultaneous processing of one or more IF signals of dynamically varying frequency and bandwidth with a single analog signal path. The signal processing system includes, but is not limited to, a conv... | 09/25/2007 |
| 7263874 | Methods and apparatus for determining properties of a fluid A method and system for determining properties of a fluid involves interacting the fluid with a standing wave in a first state to establish the standing wave in a second state, analyzing an electric signal associated with the standing wave to determine a characteris... | 09/04/2007 |
| 7262607 | Characterizing substances with multistatic probes The disclosed technology can be used in the development and operation of multistatic probes that can characterize substances and relationships between substances. A multistatic probe can include transmitting and receiving conductive elements that are electrically di... | 08/28/2007 |
| 7259571 | Detector of objects by microwave frequency echo analysis The field of the invention is that of devices for detecting non-metallic objects concealed on human subjects. These devices are more particularly dedicated to the surveillance and protection of reserved access areas, such as airport areas. The device according to th... | 08/21/2007 |
| 7253641 | Radio frequency particulate sensing system A particulate sensing system for a particulate trap including a radio frequency transmit circuit and a radio frequency receive circuit is disclosed. The transmit circuit may include a wideband signal generator configured to produce a wideband radio frequency signal ... | 08/07/2007 |
| 7242176 | Systems and methods for evaluating electromagnetic interference Systems and methods for evaluating electromagnetic interference that may be employed, for among other things, to evaluate electronic system immunity to radiated electromagnetic fields and/or to identify particular electronic system areas that are susceptible to elec... | 07/10/2007 |
| 7239267 | Microwave sealing for radar level gauges A radar level gauge system is disclosed, having a transmitter for transmitting measuring signals towards the surface of the filling material, a receiver for receiving echo signals from said surface and a fastening structure adapted to secure said transmitter and rec... | 07/03/2007 |
| 7239122 | Multi-channel radiometer imaging system A radiometer system includes a housing and an RF board contained within the housing. Balanced radiometer channels receive an unknown signal and known reference. Each balanced radiometer channel includes at least one quadrature hybrid and amplifier circuit to provide... | 07/03/2007 |
| 7236120 | Ultra-wideband detector systems for detecting moisture in building walls A non-destructive detection method and system enables detecting a moisture patch located inside a building wall or the like. A transmitter generates a series of ultra-wideband pulses while an ultra-wideband antenna unit, preferably in the form of an antenna array in... | 06/26/2007 |
| 7235982 | Re-calculating S-parameter error terms after modification of a calibrated port A two-port S-parameter calibration between a first port and a second port of a test system having a multi-port vector network analyzer is performed to provide a first S-parameter calibration of the test system. A transfer device is connected between the first and se... | 06/26/2007 |
| 7224905 | Remotely-interrogated high data rate free space laser communications link A system and method of remotely extracting information from a communications station by interrogation with a low power beam. Nonlinear phase conjugation of the low power beam results in a high power encoded return beam that automatically tracks the input beam and is... | 05/29/2007 |
