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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7322244 | Interrogation system for active monitoring of structural conditions Systems for monitoring structural health conditions of objects. Each system includes patch sensors attached to an object, wherein each patch sensor is capable of generating a wave upon receipt of an actuator signal and developing a sensor signal in response to the w... | 01/29/2008 |
| 7230371 | Light source A light source has a rear glass substrate and a front glass substrate having a plate surface disposed in facing relation to a principal surface of the rear glass substrate. The plate surface of the front glass substrate is coated with a phosphor. A two-dimensional a... | 06/12/2007 |
| 7204129 | Real-time system for detecting foreign bodies in food containers using ultrasound An ultrasound system determines the presence of a foreign object in a container of fluid by measuring echo signals from the outer surface of the container and the inner surface of the container. The amplitude of the echo signals are compared to determine the presenc... | 04/17/2007 |
| 7204147 | Ultrasonic inspection method for weld zone An inspection method can easily determine welding condition by just comparing an echo height returned from the weld zone of a real product with a master data. An master data is made based on the data from prepared test pieces corresponding to the real product... | 04/17/2007 |
| 7197932 | Failure detecting system The present invention relates to a failure detecting system that enables the detection of a break in a rail and the like by a simple network configuration. Detecting units (20 and 50), relay units (30A, 30B, 60A through 60C)... | 04/03/2007 |
| 7171854 | Nondestructive inspection apparatus and nondestructive inspection method using elastic guided wave A nondestructive inspection apparatus using a guided wave having waveform forming part that form a transmission waveform; a transmitting element for generating a guided wave within an object under inspection; a receiving element for receiving a reflection wave of th... | 02/06/2007 |
| 7061163 | Ultrasonic transducer and ultrasonic flowmeter An ultrasonic transducer according to the present invention includes: a piezoelectric body 4 to set up ultrasonic vibrations; an acoustic matching layer 3 made of a material with a density of 50 kg/m3 to 1,000 kg/m3 and an acousti... | 06/13/2006 |
| 7055389 | Acoustic coupling with a fluid retainer An apparatus examines the internal structure of an object disposed substantially in a medium such as air, which essentially totally reflects acoustic signals in the 1-200 MHz frequency range. The apparatus has an acoustic transducer that emits and receives acoustic ... | 06/06/2006 |
| 6993972 | Real-time system for detecting foreign bodies in food containers using ultrasound An ultrasound system determines the presence of a foreign object in a container of fluid by measuring echo signals from the outer surface of the container and the inner surface of the container. The amplitude of the echo signals are compared to determine the presenc... | 02/07/2006 |
| 6981417 | Scanning acoustic micro imaging method and apparatus for non-rectangular bounded files Method and implementing apparatus useful in acquiring data on acoustic features within a sample provides a pulsed acoustic probe and a stage system for effecting relative movement between the sample and the probe. The stage system is commanded such that the probe in... | 01/03/2006 |
| 6968727 | Calibration method and device for long range guided wave inspection of piping The present invention is for a simple, reliable and inexpensive method to calibrate a defect signal to determine the size of a defect in a pipe. A first reflected signal is received from the test area of the pipe. After attaching a clamp, a second reflected signal i... | 11/29/2005 |
| 6956426 | Integrated high-voltage switching circuit for ultrasound transducer array An integrated high-voltage switching circuit includes a switch having ON and OFF states and having a parasitic gate capacitance. The switch consists of a pair of DMOS transistors integrated back to back and having a shared gate terminal, the drains of the DMOS trans... | 10/18/2005 |
| 6945113 | End-to-end ultrasonic inspection of tubular goods The present technique provides a system and method for ultrasonically testing a tubular good along the entire axial length of the material using a single ultrasonic test assembly. The ultrasonic test assembly has an ultrasonic tubular inspection unit movable lengthw... | 09/20/2005 |
| 6831875 | Apparatus for ultrasonically detecting position of web edge and method of doing the same An apparatus for ultrasonically detecting an edge of a web, includes a ultrasonic-wave transmitter transmitting ultrasonic-wave pulse train, a ultrasonic-wave receiver receiving the ultrasonic-wave pulse train and converting the received ultrasonic-wave pulse train ... | 12/14/2004 |
| 6543287 | Method for acoustic imaging by angle beam A method for acoustic imaging by angle beam, which includes generating a sound wave, coupling the wave at an angle to a first surface of a test piece via a physically continuous path. The test piece also has a second surface. The angle being such that the... | 04/08/2003 |
| 6189383 | Method and apparatus for acoustic logging of fluid density and wet cement plugs in boreholes A method of determining the acoustic impedance of a fluid in a borehole, by gating a reflected acoustic signal into a plurality of time slots, and comparing received energies of the signal for the time slots to obtain a value indicative of the acoustic im... | 02/20/2001 |
| 5943641 | Method and device for recovering a wanted acoustic signal from a composite acoustic signal including interference components The device for extracting a useful acoustic signal from a composite acoustic signal including nuisance components includes: first sensor component for picking up the composite acoustic signal; second sensor component for picking up, in real-time, the refe... | 08/24/1999 |
| 5922962 | Sparse two-dimensional transducer array with compound lens A two-dimensional ultrasonic transducer for forming images. The transducer has a plurality of transducer elements for producing ultrasonic bursts in a predetermined manner, and receiving reflected ultrasound from the subject under examination due to the u... | 07/13/1999 |
| 5837899 | Ultrasonic testing (UT) system having improved signal processing An ultrasonic testing system can receive data from at least two ultrasonic transducers and process the data in parallel to each other. The testing system can compress the data by a fixed ratio by storing the value of the sample having the highest-amplitud... | 11/17/1998 |
| 5437178 | Controller for ultrasonic sensors An ultrasonic transducer for measuring a property of a material within a defined space has a function of a velocity at which ultrasonic signals travel through the defined space includes a controller. The controller is adapted for coupling to a plurality o... | 08/01/1995 |
| 5431054 | Ultrasonic flaw detection device An ultrasonic flaw detection device including a transmitting ultrasonic transducer for producing multiple shear wave skips between inner and outer surfaces of a test object, a plurality of receiving transducers positioned ahead of and parallel to at gener... | 07/11/1995 |
| 5349860 | Apparatus for measuring the thickness of clad material An apparatus for measuring the thickness of a clad material having an outer mother metal and an inner clad metal. The apparatus includes a transmitter crystal and a receiver crystal of a double crystal angle-type probe which contact the outer surface of t... | 09/27/1994 |
| 5291786 | Ultrasonic microscope An ultrasonic microscope of this invention generates a transmission signal from a transmission timing circuit, converts this transmission signal into an ultrasonic pulse, radiates the ultrasonic pulse on a sample, receives an echo from the sample, and gen... | 03/08/1994 |
| 5154080 | Integrated check valve testing system Integrated check valve testing system includes a method and apparatus for non-intrusively testing a check valve which includes using an ultrasonic transducer externally connected to the check valve to direct ultrasonic sound waves through the check valve ... | 10/13/1992 |
| 4991440 | Method of ultrasonically measuring thickness and characteristics of zirconium liner coextruded with zirconium tube A coextruded zirconium tube and tube liner are monitored along their lengths by well known ultrasonic measurement techniques that are modified by the blocking out of extraneous signals at opposite sides of a timing gate that varies in width according to v... | 02/12/1991 |
| 4799167 | Ultrasonic 64 channel inspection system with multigate/multimode selection software configurability Nondestructive ultrasonic testing systems and methods include data processing capabilities which allow time division multiplexing of several transducer channels by a smaller number of gates for signal processing, and time division multiplexing the outputs... | 01/17/1989 |
| 4700711 | Ultrasonic detector with integral confidence tests An ultrasonic sounding apparatus is described for measuring backfat and determining pregnancy in animals, having a plurality of self-test features to ensure integrity of the measurements. In the preferred embodiment, a hand-held ultrasonic device is descr... | 10/20/1987 |
| 4655084 | Ultrasonic test instrument The invention relates to an ultrasonic test instrument for the nondestructive testing of materials. The instrument includes a transit time measuring circuit and an amplitude and time gate circuit. According to the invention, to measure the amplitudes and ... | 04/07/1987 |
| 4651568 | Glass bottle inspection In glass bottle inspection, a pulse of acoustic wave is injected into a portion of the glass bottle forming a closed path for the propagation of the acoustic wave pulse so that the injected acoustic wave pulse travels round the closed plath, and acoustic ... | 03/24/1987 |
| 4598714 | Apparatus for measuring the thickness of corneas An apparatus is disclosed for measuring the thickness of the corneas. Corneal thickness is measured by first directing ultrasonic pulses towards the cornea and timing the interval between reflected pulses. The apparatus also includes a pulse stretcher for... | 07/08/1986 |
| 4581937 | Method of suppressing unwanted indications in automated ultrasonic testing The invention relates to a method of suppressing unwanted indications in automated ultrasonic testing of a test piece. In order to improve the suppression of unwanted indications, in particular in the case of extended statistical suppression, a variable discri... | 04/15/1986 |
| 4492118 | Nondestructive testing of structural material by means of ultrasonics Plate stock of uneven and variable thickness is tested for defects by means of ultrasonics whereby the zone adjacent the front surface and up to a depth of the minimum plate thickness is detected conventionally, but under utilization of a novel method the... | 01/08/1985 |
| 4487071 | Flaw detection system for railroad rails and the like Rail testing apparatus, particularly useful at the point of manufacture, for detecting flaws in railroad rails. A number of transducers transmit ultrasonic sound waves into a rail under test and receive the associated echo signals. The apparatus advantage... | 12/11/1984 |
| 4478083 | Plane reconstruction ultrasound tomography device An ultrasound tomography device for scanning an object under examination from a plurality of directions. Coronal slice images of the plane areas near or at the female breast wall are obtained. Ultrasound lobes from ultrasound transducers are electronicall... | 10/23/1984 |
| 4478084 | Ultrasound tomography device An ultrasound tomography device for scanning an object under examination from a plurality of directions. Coronal slice images of the plane or planes near or at the female breast wall are obtained. A sagittal scanner is used to obtain numerous small sectio... | 10/23/1984 |
| 4354388 | Method for nondestructive material testing with ultrasound pulses A method for ultrasonic fault localization, in which the fault is determined from the travel time of the ultrasound pulses and the echo pulses, in which an echo pulse reflected in the workpiece at a fault is received at three different points on the surfa... | 10/19/1982 |
| 4309906 | Apparatus for providing an ultrasonic sectional view The present invention relates to an apparatus for providing an ultrasonic sectional view by exciting elements in a plane ultrasonic transducer to form focusing waves. The reflected waves are received and time-coordinated by means of a circuit for each ele... | 01/12/1982 |
| 4285010 | Ultrasonic interrogating system and exciter-detector circuit therefor In order to obviate the necessity for providing a complete channel of electronics for each transducer of an array incorporated into a real-time ultrasonic imaging system, all system transducers are disposed in apparent series with a single inductor as to ... | 08/18/1981 |
| 4270389 | Method and apparatus for the automatic ultrasonic flaw detection Method and apparatus for automatic ultrasonic flaw detection of pipe welding zones wherein the width of the weld zone is divided into a plurality of subdivisions. The ultrasonic energy received from each of the subdivisions is displayed by employing multi... | 06/02/1981 |
| 4265119 | Ultrasonic method of inspecting spot welds To obtain a measure of the size of a spot weld nugget, the weld is scanned with an ultrasonic beam of about 20 megahertz frequency. The ultrasonic signal transmitted through the part is analyzed to determine the presence of the part and the presence of a ... | 05/05/1981 |
