Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7877887 | Method and system for heading indication with drift compensation An apparatus and method for compensation of the effects of various bias errors encountered by inertial rate gyroscopes, particularly vibrating element gyroscopes, configured to detect heading relative to true north. Certain embodiments are suitable for reducing rota... | 02/01/2011 |
| 7114263 | Gyrocompass A gyrocompass has a liquid tank containing a supporting liquid therein, a gyrosphere floating in the liquid tank by the supporting liquid and whose central portion is rotatably supported by a center pin provided in an upper portion of the liquid tank, a gyro rotor i... | 10/03/2006 |
| 6968281 | Method for calibrating an inertial measurement unit A method for testing inertial measurement devices on a multi-axis rate table without having to utilize slip rings to transfer signals between the inertial measurement devices and remote processors by incorporating a processor internal to the inertial measurement dev... | 11/22/2005 |
| 6131297 | Gyro compass To provide a gyro compass for the use of a high speed ship, in a gyro compass of the type having north-seeking means which is applied to support a gyro sphere or gyro case immersed in a liquid in a tank, a substantially first-order lag filter is provided ... | 10/17/2000 |
| 5699256 | Offset-drift correcting device for gyro-sensor An offset-drift correcting device is designed for a gyro-sensor mounted on an object and outputting a signal representing an angular speed of the object. The device includes a first section for detecting whether or not the object is rotating. A second sec... | 12/16/1997 |
| 5612687 | Process for regulating the orientation of a support structure such as that carrying a head-up control system on an aircraft On an aircraft it is proposed that the orientation (pitch and roll attitudes and heading) of a support structure (10), such as the structure supporting the optical head of a head-up control system, be regulated by means of an inertial unit (16). The said ... | 03/18/1997 |
| 5566461 | Method of determining the direction of north In a ribbon suspended meridian gyroscope in which the gyroscope restoring moment is compensated by a compensating moment, which compensating moment is measured, a North reference angle is determined from a number of different measurements taken in various... | 10/22/1996 |
| 5416976 | Gyro compass A gyro compass having a gyro case housing therein a gyro and supported with freedom of three axes, functions for outputting a signal corresponding to an inclined angle of the gyro spin axis relative to the horizontal plane, and a function for applying a t... | 05/23/1995 |
| 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 |
| 5355034 | Drift suppressing circuit of gyroscope An output signal of a gyroscope is input to two differential circuits having different characteristics in a high frequency band. Output signals of the differential circuits are compared in a comparison circuit, and the output signal of the gyroscope at th... | 10/11/1994 |
| 5272815 | Gyro compass A gyro compass having a gyro case housing therein a gyro and supported with freedom of three axes, functions for outputting a signal corresponding to an inclined angle of the gyro spin axis relative to the horizontal plane and a function for applying a to... | 12/28/1993 |
| 5247748 | Gyro compass A gyro compass having a gyro case housing therein a gyro whose spin axis is held substantially in the horizontal plane, a supporting device for supporting the gyro case with freedom of three axes and means for applying a torque proportional to an inclined... | 09/28/1993 |
| 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 |
| 4977679 | Azimuth signal generator In an azimuth signal generator for an automobile navigation system a change in the rotational rate of an inertia rotary member, which has its rotary shaft held vertically and is driven at substantially a constant speed, is detected as a direction changing... | 12/18/1990 |
| 4622646 | Arrangements for correcting compasses A marine gyro compass output is corrected to take account of accelerations cting upon the ship in which it is installed by calculating about once per second a correction capable of expression by differential equations which are solved by numerical methods ... | 11/11/1986 |
| 4458426 | Gyroscopic apparatus A gyrocompass has a gimbal (18;218) rotatable about an upright axis (22;222) and a gyro (10;210) rotatably mounted in this gimbal (18;218) about an inner axis (16;216) transverse to the upright axis (22;222). The gyrocompass also includes a level sensor (... | 07/10/1984 |
| 4399694 | Gravity gradiometer compass A gravity gradiometer disposed upon a gyroscopically stabilized platform in a vehicle can be modified, without impairment of its normal operation, to perform compassing functions.... | 08/23/1983 |
| 4379365 | Gyrocompass A gyrocompass including a first gimbal, a gyro motor mounted in the first gimbal and including a gyro rotor mounted to rotate about a horizontally alignable spin axis, a pendulous body in which the first gimbal is mounted to be rotatable about a verticall... | 04/12/1983 |
| 4336596 | Method and apparatus for electronically rotating a heading signal In a vehicle locating apparatus that utilizes Hall effect generators to determine the magnetic heading of the vehicle there is provided magnetic compensation by the placing of a coil around the Hall generators. A current source generator provides power to... | 06/22/1982 |
| 4283960 | Gyroscope indexing drive mechanism The gyrocompass includes an improved indexing mechanism whereby the mechanical position of the gyroscope casing with respect to two orthogonal components of input rate may be measured.... | 08/18/1981 |
| 4214482 | Inertial instrument Disclosed is apparatus and method for accurately determining the direction of true north or the change in drift of other gyroscopes. The apparatus comprises a single degree of freedom gyroscope driven by a permanent magnet electric motor. The gyroscope ro... | 07/29/1980 |
| 4179087 | Gyroscope rate range switching and control system An automatic rate range switching and control system adapts the full range of an analog output signal of a gyroscopic rate sensor to a range consistent with the precision conversion thereof into a digitally compatible signal. In a digital strapped down in... | 12/18/1979 |
| 4033045 | Portable surveying gyrocompass apparatus A miniature automatically self-aligning azimuth reference employs a floated pendulous gyrocompass device for the rapid determination of geographic north as required for surveying purposes. Fast alignment with north from an initially misaligned condition i... | 07/05/1977 |
| 3997975 | Calibration of a meridian seeking instrument A calibration system produces a calibrating signal having an adjustable amplitude, a torque force representative of that amplitude is directly applied to a meridian seeking gyroscope unit that hangs from a suspension band. Prior to each use of the instrum... | 12/21/1976 |
