Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 8011107 | Jig for selecting valve part number or joint part number A jig for selecting a valve part number or a joint part number representing respective selected conditions required for selecting a valve or a joint comprising: a substantially rectangular base plate defining an inner space, and several sliding gauges laterally arra... | 09/06/2011 |
| 7412770 | Device for adjusting the angle of a sighting unit to a target The invention relates to a device for adjusting the angle of a sighting unit towards a target, in particular for a geodesic-measuring instrument. The inventive device comprises a reference base, at least one bearing for mounting the sighting unit thereon in such a w... | 08/19/2008 |
| 7370530 | Package for MEMS devices A package for packaging one or more MEMS devices is disclosed. A package in accordance with an illustrative embodiment of the present invention can include a packaging structure having a base section, a top section, and an interior cavity adapted to contain a number... | 05/13/2008 |
| 7363717 | System and method for using rotation sensors within a borehole A system and method for using a survey tool within a borehole is provided. The survey tool includes a plurality of rotation sensors each having a sensing axis and a direction of least acceleration sensitivity. The sensing axes of the plurality of rotation sensors ar... | 04/29/2008 |
| 7251900 | Methods and systems utilizing intermediate frequencies to control multiple coriolis gyroscopes Apparatus, systems, and methods to control a plurality of gyroscopes utilizing intermediate frequencies are disclosed. The gyroscopes are configured to operate at the same pre-determined intermediate frequency. To accomplish this, the natural frequency of each gyros... | 08/07/2007 |
| 7234351 | Electronic measurement of the motion of a moving body of sports equipment An application of rate gyros and accelerometers allows electronic measurement of the motion of a rigid or semi-rigid body, such as a body associated with sporting equipment including a fly rod during casting, a baseball bat, a tennis racquet or a golf club during sw... | 06/26/2007 |
| 7225550 | System and method for using microgyros to measure the orientation of a survey tool within a borehole A system and method for determining an orientation of the survey tool within a borehole utilizes a survey tool including a plurality of rotation sensors each having a sensing axis and a direction of least acceleration sensitivity. The plurality of rotation sensors a... | 06/05/2007 |
| 7117605 | System and method for using microgyros to measure the orientation of a survey tool within a borehole A system and method for determining an orientation of the survey tool within a borehole utilizes a survey tool including a plurality of rotation sensors each having a sensing axis and a direction of least acceleration sensitivity. The plurality of rotation sensors a... | 10/10/2006 |
| 7093370 | Multi-gimbaled borehole navigation system An omnidirectional borehole navigation system is provided that includes a housing that can be placed within the smaller diameter drill pipes used towards the bottom of a borehole, an outer gimbal connected to the housing, and at least two or more stacked inner gimba... | 08/22/2006 |
| 7065888 | Gyroscopic system for boresighting equipment A gyroscopic system for translating parallel and non-parallel lines between a reference line and a device to be aligned with respect to the reference line is provided. The system includes a first inertial sensor configured to be substantially stationary, the first i... | 06/27/2006 |
| 7003386 | Device and method for determining the position of a working part The invention relates to a device and to a method for determining the position for a working part of a tool on a working machine with a position-determining apparatus (2, 4, 5, 6; 2, 4a, 4b, 5, 6′; 31, 33, 49, 50, 51, 1′,53). At least one de... | 02/21/2006 |
| 6964107 | System, method, device and computer code product for improving the readability of an electronic compass A system, method, device and computer code product is disclosed for stabilizing compass heading under tilt error conditions from an uncorrected electronic compass reading. Exemplary embodiments include a stabilizing filter configured to filter out tilt errors incorp... | 11/15/2005 |
| 6965397 | Measuring camera attitude A system is disclosed for using camera attitude sensors with a camera. A camera assembly includes a tripod base, a tripod head interface mounted on the tripod base, a tripod head mounted on the tripod head interface and a camera mounted on the tripod head. The tripo... | 11/15/2005 |
| 6925413 | Method and system for detecting a spatial movement state of moving objects A method and a system for detecting the spatial movement state of moving objects, e.g., vehicles. Due to a, for example, non-cartesian arrangement of four rotational rate sensors and/or acceleration sensors, it is also possible to obtain a redundant signal in additi... | 08/02/2005 |
| 6895678 | Borehole navigation system An omnidirectional borehole navigation system is provided which features a housing for traversing a borehole; a gimbal system including at least one outer gimbal connected to the housing and at least one inner gimbal nested in and connected to the outer gimbal; a so... | 05/24/2005 |
| 6621245 | System for the stabilization of an object mounted on a moving platform A calculation system for calculating the control signals which are designed to perform a frequency-dependent weighting of the angular velocity signals and the angular position signals. The angular velocity indicators are preferably used for stabilization ... | 09/16/2003 |
| 6594911 | Long-term navigation method and device Using an inertial master box mounted on a carrier for measuring its movements with respect to a geographic frame of reference of fixed directions along three axes Xg, Yg, Zg, a measuring method provides for continuously measuring an orientation of a frame... | 07/22/2003 |
| 6396235 | Stabilized common gimbal A two axis (azimuth and elevation) stabilized common gimbal (SGC) for use on a wide variety of commercial vehicles and military vehicles which are employed in combat situations capable of stabilizing a payload of primary sensors and of mounting a secondar... | 05/28/2002 |
| 6377906 | Attitude estimation in tiltable body using modified quaternion data representation The attitude of a tiltable body is tracked and controlled on the basis of signals outputted from gyros and tilt sensors. The signals outputted from the gyros are transformed and integrated to produce estimated position information in the form of a modifie... | 04/23/2002 |
| 6354011 | Orientation measuring device An orientation measuring device with a plurality of precision tooled grooves, indentations or the like. Two precision tooled adaptor bodies, preferably of cylindrical shape, are removably mountable in the indentations, where appropriate, for a given measu... | 03/12/2002 |
| 6351092 | System for the stabilization of an object mounted on a moving platform A calculation system for calculating the control signals which are designed to perform a frequency-dependent weighting of the angular velocity signals and the angular position signals. The angular velocity indicators are preferably used for stabilization ... | 02/26/2002 |
| 6338199 | Sensor A sensor includes a plurality of weight portions which swivel, support parts each of which supports at one end a corresponding one of the plurality of weight portions in the same direction, and a driving part which supplies driving power to the support pa... | 01/15/2002 |
| 6131068 | Accuracy of an inertial measurement unit A missile guidance system employs a strap down inertial measurement unit with a separate accelerometer and star sensor that are moved for preflight accelerometer initialization. During flight, light is directed on the accelerometer and inertial measuremen... | 10/10/2000 |
| 5606414 | Interferometric ship's heading reference system Two Sagnac interferometers are mounted on board a ship with their axes in a horizontal plane. The axis of one interferometer is aligned in a fore-aft direction whereas the axis of the other interferometer is aligned athwartship. The output signals of the ... | 02/25/1997 |
| 5396326 | Two gimbal error averaging astro-inertial navigator A strapped down astro-inertial navigator includes a roll outer gimbal, a pitch inner gimbal and a platform coupled to the inner gimbal. An instrument cluster which includes X-axis, Y-axis and Z-axis ring laser gyros (RLGs) and associated accelerometers is... | 03/07/1995 |
| 5369889 | Single gyro northfinder Disclosed is a northfinding apparatus having a single rotation rate sensor secured to a platform. The output of the rotation rate sensor is corrected for tilt and tilt rate of the platform. Measurements of the tilt and tilt rate and the rotation rate are ... | 12/06/1994 |
| 5331578 | Procedure for measuring angles and trajectories by means of gyros and inertial systems The calibration of time-depending measurement uncertainties of gyros and inertial systems by the differences of angular and/or velocity and/or positional measurements which are carried out and repetitiously executed with a view to undetermined reference d... | 07/19/1994 |
| 5297052 | Integrated fault-tolerant air data inertial reference system A fault-tolerant air data and inertial navigation reference system utilizes skewed axis inertial sensors and fault-tolerant redundant electronics to provide higher redundancy with fewer parts. Parallelly operating processor circuits each receive the indiv... | 03/22/1994 |
| 5184304 | Fault-tolerant inertial navigation system Disclosed herein is a Fault-Tolerant Inertial Navigation System comprising, in a preferred embodiment, a Redundant Set of at least two Inertial Navigation Systems, from which one may identify and isolate at least one instrument within an Inertial Navigati... | 02/02/1993 |
| 5115570 | Method for eliminating gyro errors In order to eliminate gyro errors of electrically caged, two-axis gyros, which have a pick-off (52,54) and a torquer (46,48) on each input axis, and each pick-off (52,54) arranged on one input axis energizes the torquer (48,46) on the other input axis, a ... | 05/26/1992 |
| 5060392 | North finding system A gyrocompassing system intended for land based equipment requiring north reference information includes a novel gyrocompass implementation which enables utilization of high grade inertial sensors while achieving the desired goal of moderate cost. The nor... | 10/29/1991 |
| 5042156 | Method and apparatus for reducing measurement errors in a navigation triad A navigation method and apparatus for reducing substantially the measurement errors such as accelerometer bias, gyro drift rate, gyro scale factor errors, and gyro sensing axis orientation uncertainty. The navigation apparatus includes a first gimbal for ... | 08/27/1991 |
| 4973144 | Inertial device for stabilizing the inclination of an orientable body and vehicle-mounted telescope mirror fitted with a device of this kind A device for stabilizing the inclination of an orientable member mobile in rotation relative to a support which is itself mobile. The device includes, the member, a gyroscope the input shaft of which is rotated on itself by an aiming motor having a casing... | 11/27/1990 |
| 4945647 | North finding system A gyrocompassing system intended for land based equipment requiring north reference information includes a novel gyrocompass implementation which enables utilization of high grade inertial sensors while achieving the desired goal of moderate cost. The nor... | 08/07/1990 |
| 4914598 | Integrated redundant reference system for the flight control and for generating heading and attitude informations A plurality of two-axis rate gyros are arranged in relation to an aircraft-fixed coordinate system such that they redundantly supply angular rate information. A plurality of accelerometers supply correspondingly redundant acceleration information. First s... | 04/03/1990 |
| 4596989 | Stabilized antenna system having an acceleration displaceable mass A stabilized antenna system is disclosed. The stabilized antenna platform includes an acceleration displaceable mass which compensates for linear acceleration forces to inhibit tipping of the antenna platform. The stabilized antenna system may include in ... | 06/24/1986 |
| 4582291 | Mechanically stabilized platform system A compositely statically balanced mechanically stabilized platform system including a stabilizing platform having at least one pivotal axis, an equipment platform, a supporting structure, a pendulum, non-rigid means for orienting the platform with respect... | 04/15/1986 |
| 4483080 | Alignment detection system Apparatuses and processes for detecting misalignments between various portions of a deformable body, such as an aircraft, are disclosed. Orientation detection devices, such as potentiometric vertical indicators and gyros, are provided at a master module d... | 11/20/1984 |
| 4472978 | Stabilized gyrocompass In a stabilized gyrocompass having meridian seeking gyroscopic means and slaved horizontal gryoscopic means disposed upon a common platform, a signal representative of the angle which develops between the meridian seeking gyro and the platform in response... | 09/25/1984 |
| 4471533 | Well mapping system and method with sensor output compensation Bore-hole mapping, or surveying, or tool steering in a bore-hole is accomplished using selected combinations of sensors, with sensor signal compensation being provided, in the hole or at the surface. Typical sensors include an angular rate sensor or senso... | 09/18/1984 |
