Quotables
"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 8109142 | Inertial sensing system with a curved base and a diamagnetic mass An inertial sensing system includes a diamagnetic mass, a plurality of permanent magnets positioned to form a curved base, wherein the plurality of permanent magnets are configured to provide an inhomogeneous magnetic field upon which the diamagnetic mass becomes le... | 02/07/2012 |
| 7788974 | Gravity gradiometer A gravity gradiometer is disclosed which has a sensor in the form of bars (41 and 42) which are supported on a mounting (5) which has a first mount section (10) and a second mount section (20). A first flexure web (33) pivot... | 09/07/2010 |
| 7788975 | Accelerometer and rate sensor package for gravity gradiometer instruments An accelerometer and rate sensor package to aid gravity gradiometers is provided. The accelerometer and rate sensor package is mounted directly on or within a gravity gradiometer instrument (GGI). Outputs from the sensors can be used to reduce unwanted noise due to ... | 09/07/2010 |
| 7707883 | Apparatus and method for improved light source and light detector for gravimeter An instrument for measuring gravitational acceleration from within a borehole, the instrument including: a light source having a semiconductor that comprises a bandgap greater than about two electron volts (eV); and a gravimeter for receiving light from the light so... | 05/04/2010 |
| 7624635 | Gravity gradiometer A heat switch 570 is disclosed as well as a gradiometer having the heat switch. The heat switch is formed from a non-magnetic material such as a semi-conducting material. The semi-conducting material may be provided by way of a Hall effect device. The heat sw... | 12/01/2009 |
| 7469585 | Miniature freefall mechanism A system for measuring differential gravity at two points is disclosed. In the illustrative embodiment, the system uses a pair of graspers which each repeatedly grasp, raise, and drop a test mass. The accelerations of the two free-falling test masses are monitored u... | 12/30/2008 |
| 7444867 | Accelerometer and rate sensor package for gravity gradiometer instruments An accelerometer and rate sensor package to aid gravity gradiometers is provided. The accelerometer and rate sensor package is mounted directly on or within a gravity gradiometer instrument (GGI). Outputs from the sensors can be used to reduce unwanted noise due to ... | 11/04/2008 |
| 7360419 | Gravity gradiometer A gravity gradiometer having quadrupole responders in which a mass quadrupole is supported by a torsional spring forming a flexure allowing rotation of the mass quadrupole about its center of mass. The flexure can be a pair of spaced apart posts. The flexure can be ... | 04/22/2008 |
| 7305879 | Cross-component superconducting gravity gradiometer with improved linearity and sensitivity and method for gravity gradient sensing A cross-component superconducting gravity gradiometer sensitive to off-diagonal components of the gradient tensor includes, for each gradient axis, a pair of closely matched angular accelerometers coupled by superconducting circuitry, including sensing circuits desi... | 12/11/2007 |
| 7243719 | Control method for downhole steering tool A method for determining a rate of change of longitudinal direction of a subterranean borehole is provided. The method includes positioning a downhole tool in a borehole, the tool including first and second surveying devices disposed thereon. The method further incl... | 07/17/2007 |
| 7243526 | Device and method for measuring the impact properties of a sport field surface The tuft impact tester mounts a test probe in a suspended manner from a tripod arrangement via a gimbals mechanism so that the test probe is able to move along a vertical axis. The test probe is dropped from a predetermined height, the velocity of the test probe is ... | 07/17/2007 |
| 7240550 | Method and apparatus for material indentification by means of gravitational field analysis Described is a sensor for filling level measurement using a gravitational field analysis, comprising a first and a second gravimeter unit. The measurement is effected in a contactless manner, via the container wall and without input of energy into the filling good. ... | 07/10/2007 |
| 7236885 | Method and system for geophysical data acquisition on an airship A geophysical survey is conducted, using specialized instruments, to measure the gravity field by flying over a terrain of interest. A series of nominally parallel survey lines can be flown until a total region to be surveyed has been covered. The geophysical survey... | 06/26/2007 |
| 7222534 | Optical accelerometer, optical inclinometer and seismic sensor system using such accelerometer and inclinometer An optical accelerometer includes a beam and at least one optical fiber affixed to one side of the beam such that deflection of the beam changes a length of the optical fiber. A device for sensing the change in length of the optical fiber is functionally coupled to ... | 05/29/2007 |
| 7222020 | System and method for determining oil or mineral deposits A system and method determines the probability of oil or mineral deposits. At least one data collection device collects elevation slope, magnetic and gravity data sets for a predetermined area of the earth's surface. A processor receives the elevation slope, magneti... | 05/22/2007 |
| 7185541 | MEMS magnetic device and method A MEMS device and method of manufacturing comprises a magnetic sensor attached to a frame; at least one magnet adjacent to the magnetic sensor; a proof mass attached to the magnet; a cantilever beam attached to the proof mass; and a rod attached to the cantilever be... | 03/06/2007 |
| 7181967 | Enhancement of sensors for airborne operation Gravity gradiometers (or gravity gradient instrument, GGI) measure one or more components of the gradient of gravity which is expressed as the gradient of a gravity vector. One or more feedback loops extend from the instrument output to one or more of the accelerome... | 02/27/2007 |
| 7151659 | Gapped-plate capacitor In a semiconductor device, a capacitor is provided which has a gap in at least one of its plates. The gap is small enough so that fringe capacitance between the sides of this gap and the opposing plate at least compensates, if not overcompensates, for the missing co... | 12/19/2006 |
| 7113868 | Method and system for processing geophysical survey data A method and system for processing geophysical survey data is provided. Gravity gradiometry data is processed by approximating density values of terrain signals to remove contributions of the terrain from the gravity gradiometry data. Initially, a predicted gravity ... | 09/26/2006 |
| 7069780 | Gravity techniques for drilling and logging Techniques for using gravity in applications such as drilling and logging. Techniques are present for (1) gravity well logging using gravity sensors arrays; (2) creating density pseudosections using gravity measurements; (3) performing Gravity Measurement While Dril... | 07/04/2006 |
| 7035936 | Method for establishing a communication network based on topographic network devices and for transmitting a message through same A network for communicating a message is established by providing a network that includes topographic network devices and communication links interconnecting the topographic network devices. The topographic network devices each have a physical location represented b... | 04/25/2006 |
| 6999863 | Variation manager for crash sensing algorithms A method is disclosed for managing variation in acceleration values obtained from a vehicle acceleration sensor for use in on-board computer based crash evaluation algorithm. Sources contributing to the variation are identified and a determination is made of the mag... | 02/14/2006 |
| 6987460 | Orientation device Disclosed is an orientation device that may be deployed in a mechanical assembly such as a surveillance camera or enclosure to positively determine the physical orientation and/or attitude (tilt), or any change in such physical orientation and/or attitude, of either... | 01/17/2006 |
| 6958901 | Gapped-plate capacitor In a semiconductor device, a capacitor is provided which has a gap in at least one of its plates. The gap is small enough so that fringe capacitance between the sides of this gap and the opposing plate at least compensates, if not overcompensates, for the missing co... | 10/25/2005 |
| 6898970 | Inertial navigation device for ion propulsion driven spacecraft An extremely sensitive accelerometer suitable for use in extreme temperatures such as those encountered during space travel is formed by levitating a magnet in a box or sphere composed of diamagnetic material such as pyrolytic carbon, and a means for measuring the p... | 05/31/2005 |
| 6776035 | Method and device for calibration of dual-axis tilt meter The invention is directed toward a subsurface gravity measurement device and a method for calibrating the same that includes a tilt meter and a gravity sensor. The method includes associating tilt information produced by the gravity sensor as a function of a relatio... | 08/17/2004 |
| 6772630 | Micro-distance toss-up type absolute gravimeter A micro-distance toss-up type absolute gravimeter comprises a vacuum container mounted on the ground, a reference mirror supported in the vacuum container, a drop mirror to be dropped within the vacuum container, a toss-up device that tosses up the drop mirror by a ... | 08/10/2004 |
| 6671057 | Gravity and differential gravity sensor, and system and method for monitoring reservoirs using same A gravity sensor is disclosed which includes a first mass adapted to free fall when selectively released from an initial position. The mass has optical elements adapted to change a length of an optical path in response to movement of the mass. The sensor ... | 12/30/2003 |
| 6668646 | Gravity meter A gravity meter comprises a casing, a vacuum tube mounted in the casing in a vibration-free manner, a sensor mechanism mounted within the vacuum tube, the sensor mechanism comprising two masses of different size acting on the respective arms of a beam bal... | 12/30/2003 |
| 6615660 | Real-time self-compensating gravity gradiometer instrument A real-time self-compensating gravity gradiometer (GGI) of the type having an input plane (IP) includes a mass concentration (MC) that is moved along an orbital path (16) in the input plane (IP) to cause a positionally varying gravity perturbation in the ... | 09/09/2003 |
| 6612171 | Gravity measuring apparatus A gravity measuring apparatus is provided comprising a gravitational force detector including a test mass and which produces measurements related to gravitational force exerted on the test mass, characterized in that the gravitational force detector is ad... | 09/02/2003 |
| 6575029 | Gravity gradiometer accelerometers This invention concerns improvements to gravity gradient instruments (GGI) and in particular to the accelerometers that are paired within these instruments. Accelerometers have a proof mass suspended by a spring within a magnetic field. An internal feedba... | 06/10/2003 |
| 6526825 | Gravity device A gravity measuring instrument comprises a housing, a float, and proximity sensing means between the housing and the float. The housing defines a vertically oriented elongated chamber for containing a liquid. The chamber has an upper end and a lower end. ... | 03/04/2003 |
| 6494091 | Apparatus for measuring a gravitational attraction of the earth Apparatus for measuring gravitational attraction of the Earth comprising a loop formed from a superconductor material. The loop being divided into a first portion and a second portion having a predetermined length and configuration. The loop being positio... | 12/17/2002 |
| 6353311 | Universal particle flux pressure converter The design of Shaded Rotor devices to demonstrate the existence of a hypothetical Universal Particle Flux Field is presented. These devices should extract a measurable amount of energy from this Field. We believe the Universal Particle Flux Field can expl... | 03/05/2002 |
| 6314809 | Gravity measurement using bose-einstein condensed vapors and atom interferometry The invention uses coherent outputs from two or more Bose-Einstein condensates (BECs) to characterize the acceleration due to gravity. The condensates are created at two or more different heights in the gravitational potential. de Broglie waves are extrac... | 11/13/2001 |
| 6298722 | Rotary cam driven free fall dropping chamber mechanism An improved gravimeter mechanism includes a mass balanced cam having mutually opposed camming surfaces for controlling the free fall of a measuring mass. The cam is attached to a camshaft which turns at a constant rate, the rate being selected so that the... | 10/09/2001 |
| 6240779 | Gravity-type horizontal shift sensing apparatus A gravity-type horizontal shift sensing apparatus being mounted on and moved along with an object for efficiently sensing and measuring any difference in angle of inclination of the object when the object moves. The apparatus includes two intersected rock... | 06/05/2001 |
| 6079267 | Method and apparatus for measuring gravitational acceleration utilizing a high temperature superconducting bearing Gravitational acceleration is measured in all spatial dimensions with improved sensitivity by utilizing a high temperature superconducting (HTS) gravimeter. The HTS gravimeter is comprised of a permanent magnet suspended in a spaced relationship from a hi... | 06/27/2000 |
| 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 |
