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| Number | Title | Issue Date |
| 6121894 | Low cost time domain reflectometry system for bridge scour detection and monitoring An apparatus for detecting and monitoring scouring around a structural mer uses time-domain reflectometry (TDR) to measure the level of sediment around a submerged portion of the structural member such as a bridge pier, dock, utility crossing, or similar... | 09/19/2000 |
| 6116353 | Method and apparatus for installing a micro-well with a penetrometer A well assembly device comprises an outer tubular sleeve with a first end and second end. An inner tubular member has a first end and a second end, and the inner tubular member is disposed within the outer tubular sleeve. The inner tubular member includes... | 09/12/2000 |
| 6109486 | Dry sand pluviation device Dry sand is "rained" or pluviated into a receptor container used in the sy of soil mechanics. A supply vessel in the shape of an open-top rectangular box has four vertical side walls, a perforated bottom tray, and a slidable perforated tray in contact th... | 08/29/2000 |
| 6104298 | Roof moisture detection assembly A roof moisture detection assembly includes an imaging system for obtaining thermal and visible images of a roof surface, an imaging system support ructure for mounting the imaging system in a position elevated relative to the roof surface, a reference t... | 08/15/2000 |
| 6100700 | Bridge scour detection and monitoring apparatus using time domain reflectometry (TDR) An apparatus for detecting and monitoring scouring of a bed of sediment bath a body of water uses time-domain reflectometry (TDR) to measure the level of sediment adjacent to underwater sensors. The apparatus includes an electrical pulse generator which ... | 08/08/2000 |
| 6095178 | System for monitoring and controlling the level of a liquid in a closed container A system for monitoring and controlling the level of liquid in a closed cainer includes a block for mounting at an upper end of the container, a lower level electrode for extending from the block vertically into the container, an upper level electrode fo... | 08/01/2000 |
| 6095052 | Corrosion resistant metal body, bullet blank, and bullet and method for making same A bullet comprises a lead sheet and a zinc foil fixed to the lead sheet, the sheet and foil being rolled and pressure formed into a bullet having generally helical layers of the lead sheet and zinc foil. The bullet exhibits an improved environmental impac... | 08/01/2000 |
| 6084393 | Scour probe assembly A scour probe assembly comprises an elongated rigid tubular member of eleically insulative material, an anchoring structure fixed to a distal end of the tubular member, and a signal transmission device mounted on the tubular member. A pair of substantial... | 07/04/2000 |
| 6076395 | Constant stress diffusion cell with controllable moisture content A device for measuring the concentration changes of a vapor at various moisture contents ranging from saturation to dry and under different confining stress as it diffuses through a porous media which includes a porous central housing having a central spa... | 06/20/2000 |
| 6064760 | Method for rigorous reshaping of stereo imagery with digital photogrammetric workstation A method for rigorously reshaping a pair of overlapping digital images using a Digital Photogrammetric Workstation (DPW) is disclosed. The overlapping images are imported into the DPW as a pair of originally distorted images having an associated sensor mo... | 05/16/2000 |
| 6053479 | Self-aligning vortex snow fence The invention relates to a passive snow removal system which deliberately rms vortices from a passing airflow and directs the vortices into scouring contact with snow accumulation on a target surface. The apparatus includes a base and a vortex producing p... | 04/25/2000 |
| 6047782 | Assembly and method for extracting discrete soil samples An assembly for extracting discrete soil samples from subsurface soil at a lurality of selected depths includes an elongated outer tubular housing, and a soil sample tube for disposal in the outer tubular housing. The soil sample tube is movable axially in... | 04/11/2000 |
| 6032538 | Pressure sensor mounting device for high temperature environments A mounting device for pressure transducers comprises a housing with two cbers separated by an acoustic filter/heat sink. A blast shield having at least one opening allows communication between the measured environment and the first chamber and provides p... | 03/07/2000 |
| 6028270 | Noninvasive mass determination stockpiled materials The mass of stockpiled materials is determined from detailed measurements of the elevation of the pile surface at many points and the measurement of the gravitational field along several profile lines across the surface of the stockpiled material. The ele... | 02/22/2000 |
| 6020552 | Shielded thermocouple assembly A shielded thermocouple assembly includes a mounting pipe having a flange a first end thereof and extending outwardly therefrom, and a mounting plug having a first end connected to a second end of the mounting pipe, the mounting plug having a recess in a... | 02/01/2000 |
| 6003251 | Debris separator for dredge or slurry pump A debris separator for a dredge pump includes a body portion having a top ll, a bottom wall, first and second side walls, and an aft end wall, the aft end wall defining a separator outlet for connection to the pump, a funnel portion having an entry end de... | 12/21/1999 |
| 5995451 | Multiple sensor fish surrogate interface system for acoustic and hydraulic data collection and analysis The invention is a processor based analysis system with appropriate interface that includes multiple fish surrogates that each have a plurality of piezoelectric and triaxial accelerometer sensors for emulating sensory organs of a particular fish. The mult... | 11/30/1999 |
| 5942306 | Shock-absorbing block Shock-absorbing blocks for bullet stops at firing ranges and for traffic trol are made by encasing scrap rubber tires in concrete. To ensure firm attachment of the tires to the concrete, reinforcements such as wire loops are fastened to the tire. To prev... | 08/24/1999 |
| 5913179 | Method for spatial and temporal analysis of nested graphical data A computer implemented method for analyzing data utilizes a program and computer for processing input data in the form of a digitized map representing a physical structure. The microprocessor performs the steps and stores the results of the steps in an at... | 06/15/1999 |
| 5902939 | Penetrometer sampler system for subsurface spectral analysis of contaminated media The present invention pertains to a direct push small diameter fluorescence ased penetrometer system for performing in situ spectral analysis on subsurface liquid or gaseous samples. The invention is configured to collect liquid or gaseous analyte samples ... | 05/11/1999 |
| 5900820 | System and method for detection of frazil ice on underwater grating A system for detecting accretion of frazil ice on underwater gratings inces a housing for disposition beneath a water surface and spaced from but proximate an underwater intake grating. A pair of parallel electrically conductive bars are mounted side-by-... | 05/04/1999 |
| 5900556 | Helical optical fiber strain sensor Strain in concrete is sensed by a helical optical fiber embedded in the concrete and connected at one end to an external light source, and at the other end to a light detector, providing a signal output to an information processor, which provides a displa... | 05/04/1999 |
| 5890836 | Interlocking blocks for stream erosion control Interlocking blocks for the stabilization of stream and river banks and ct lines, road bed embankments, and boat ramps, are made of concrete, and have a high proportion of open area. Interlocking connections between adjacent blocks are made by radial pro... | 04/06/1999 |
| 5888559 | Press for compacting plastic explosive material A press for compacting plastic explosive materials comprises a base plate, support column upstanding from the base plate, a tubular housing mounted on an upper end of the column and extending widthwise of the column, a slide member slidably moveable in th... | 03/30/1999 |
| 5865439 | Pop-up target system The invention is a pop-up target system wherein a three-dimensional target is raised by a knee-like action. The target may take the form of a head and torso manufactured in two parts, a front half and a back half, which are hinged at the top of the head p... | 02/02/1999 |
| 5863483 | Shock-absorbing block Shock-absorbing blocks for bullet stops at firing ranges and for traffic trol are made by encasing scrap rubber tires in concrete. To ensure firm attachment of the tires to the concrete, reinforcements such as wire loops are fastened to the tire. To prev... | 01/26/1999 |
| 5864059 | Self-recording snow depth probe A snow probe device with a portable data logger that measures snow depths snow covered areas. The snow probe componets include: i) a linear displacement magnetostrictive transducer composed of a long probe shaft with an internal magnetostrictive transduc... | 01/26/1999 |
| 5861756 | Method of detecting accretion of frazil ice on water The spaced plates of a capacitor are immersed in water adjacent water intake grating so that water flowing toward the grating passes between and in contact with the plates so that frazil ice may accrete on the facing surfaces of the plates. As accretion o... | 01/19/1999 |
| 5858082 | Self-interlocking reinforcement fibers The invention's first embodiment uses shape memory alloy (SMA) fibers that are blended into a concrete composite material as straight fibers and are made to deform themselves and anchor and interlock themselves after dispersement in the composite material... | 01/12/1999 |
| 5849984 | Method and system for treating waste nitrocellulose A method for treating waste nitrocellulose, the method comprising the steps f treating nitrocellulose with acid in a hydrolysis process to break the nitrocellulose down to glucose, recovering a majority of the acid by electrodialysis, neutralizing a remain... | 12/15/1998 |
| 5841289 | System and method for detecting accretion of frazil ice on underwater gratings A system for detecting accretion of frazil ice on underwater gratings comses a pair of parallel electrically conductive bars mounted side-by-side, for disposition beneath a water surface and spaced from but proximate an underwater intake grating. The sys... | 11/24/1998 |
| 5841130 | System for monitoring strain in concrete structures A system for monitoring strain in concrete structures comprises a frame for mbedding in the structure with first and second ends of the frame proximate an edge of the structure, a fiber-optic cable mounted on the frame and extending substantially from the ... | 11/24/1998 |
| 5835025 | Portable battery operated power managed event recorder and interrogator system A data acquisition apparatus that includes a recorder device of an event's ime and date signified by the opening of an external trigger switching circuit in combination with a complimentary interrogator device for collecting data from the recorder device. ... | 11/10/1998 |
| 5831161 | Snow strength penetrometer The snow penetrometer apparatus with data acquisition hardware measure force required to push a small dimension tip member into a snow surface at constant speed that: i) is less than 5 mm in diameter or cross-sectional width, ii) has up to a 90° included... | 11/03/1998 |
| 5828220 | Method and system utilizing radio frequency for testing the electromagnetic shielding effectiveness of an electromagnetically shielded enclosure A system and method for continuously monitoring the shielding effectiveness f an electromagnetically shielded enclosure is disclosed including an RF transmitter positioned remote from the shielded enclosure. RF signals emitted from the remotely positioned ... | 10/27/1998 |
| 5819850 | Geotechnical grouting device and method The invention relates to a grout injection device and method for depositing a liquid grouting material in a hole formed by a cone penetrometer. The device is a modular design with a sliding sleeve member that replaces older grouting injection devices with... | 10/13/1998 |
| 5818340 | Roof moisture sensing system and method for determining presence of moisture in a roof stucture A roof moisture sensing system includes (1) a radio frequency pulse transter, (2) a moisture sensor disposed on a roof, and (3) a radio receiver adapted to monitor resonance of the moisture sensor activated by a pulse transmitted by the pulse transmitter... | 10/06/1998 |
| 5814731 | Ultrasonic scanning apparatus for nondestructive site characterization of structures using a planar based acoustic transmitter and receiver in a rolling pond The invention is a carriage type sonic or ultrasonic testing apparatus for flaw and deterioration detection testing in a structure, especially concrete. The apparatus detects both location and type of flaw in a structure. The carriage unit incorporates a ... | 09/29/1998 |
| 5815064 | Snow temperature and depth probe A temperature and depth probe for accurate temperature measurements in snow ontains a temperature sensing element such as thermistor placed in a protective cap affixed to the end of a hollow carbon fiber tubed. Wires connected to the ouput terminals of the... | 09/29/1998 |
| 5804721 | Capacitor for water leak detection in roofing structures A pair of metal plates having a space therebetween are surrounded by a flexible enclosure which is waterproof and which is filled with a dry gas. A pair of electrical conductors connected to the plates extend through and are water-tight sealed to the encl... | 09/08/1998 |
