Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7434466 | Gyro sensor The electrostatically-driven/capacitance-detection type gyro sensor has a sensing element including a movable part, the sensitivity of the sensing element and accordingly the sensitivity of a sensor output signal thereof being kept unchanged by controlling the ampli... | 10/14/2008 |
| 7368861 | Piezoelectric resonator element and piezoelectric device A piezoelectric resonator element includes a base portion formed of a piezoelectric material, a plurality of resonating arms formed integrally with the base portion and extending parallel to each other, a longitudinal groove formed along a longitudinal direction of ... | 05/06/2008 |
| 7275433 | Micro-electro-mechanical sensor with force feedback loop A micro-electro-mechanical sensor includes a microstructure having a mass which is movable with respect to a rest position, according to a predetermined degree of freedom, and a displacement-detecting device for detecting a displacement of the mass according to the ... | 10/02/2007 |
| 7225524 | Method for fabricating a gyroscope Method for fabricating a gyroscope including: fabricating a SMS wafer where a first wafer, a metal film, and a second wafer are sequentially stacked; forming a cantilever or a bridge shaped-structure on the relevant portion of the first wafer through the photolithog... | 06/05/2007 |
| 7140251 | Devices for measuring physical values and vibrators A device for measuring a physical value, such as a vibratory gyroscope, is provided. The device comprises a vibrator; a driving means for exciting a driving vibration in the vibrator; a detecting means for obtaining an output signal based on a detection vibration ex... | 11/28/2006 |
| 6934665 | Electronic sensor with signal conditioning A method for extracting components from signals in an electronic sensor (50) having a sensing element (52). The sensing element (52) generates a first signal (60) and a second signal (62). The method comprises the steps of: receivi... | 08/23/2005 |
| 6842153 | Instrument alignment devices and methods An apparatus for determining an instrument boresight azimuth heading. A typical apparatus comprises a gyro having a first input and a first output and a rocking angle generator having a second output, wherein the second output is communicatively coupled to the first... | 01/11/2005 |
| 6789029 | Method and apparatus for signal extraction in an electronic sensor A method for extracting components from signals in an electronic sensor (50) having a sensing element (52). The sensing element (52) generates a first signal (60) and a second signal (62). The method comprises the steps of: receivi... | 09/07/2004 |
| 6742388 | Device for measuring the angular velocity of a pivotally mounted vehicle element A vehicle is provided, including a vehicle body; at least one vehicle element pivotally mounted to the vehicle, the vehicle element configured to pivot through an angle not more than 360 degrees; and a measuring arrangement configured to measure an angular velocity ... | 06/01/2004 |
| 6609037 | Gimbal pointing vector stabilization control system and method A hybrid stabilization system for isolating a pointing vector of a gimbal from the motion of a vehicle base is provided. The hybrid stabilization control system includes a rate feedback loop generating a rate feedback compensation value in response to a m... | 08/19/2003 |
| 6145378 | Aided inertial navigation system The invention relates particularly to sensing devices and techniques which may be used to provide measurement data to aid an inertial navigation system, or attitude and heading reference system, and so bound the growth of errors which increase with time i... | 11/14/2000 |
| 6147626 | Determination of zero-angular-velocity output level for angular velocity sensor A technique for determining a gyro zero voltage is provided. A gyroscope ("gyro") is installed in an automobile as a component of an on-board navigation system. The gyro outputs a voltage representing an angular velocity of the vehicle. The gyro output vo... | 11/14/2000 |
| 6107616 | Power failure interrupt recovery for the pendulous oscillating gyroscopic accelerometer (POGA) A system for protecting a pendulous oscillating gyroscopic accelerometer (POGA) from power failure interruption (PFI) events, the POGA having a servo driven member (SDM), rotor driven member (RDM), and torque summing member (TSM), wherein the POGA is a pa... | 08/22/2000 |
| 6089087 | Method for adjusting the temperature characteristic of a vibrating gyroscope A vibrating gyroscope includes a vibration member in which first and second piezoelectric substrates are joined together. On the outside main surface of the first piezoelectric substrate, a first external electrode divided into six electrode sections is f... | 07/18/2000 |
| 5795988 | Gyroscope noise reduction and drift compensation A low-cost gyroscope can provide an output approaching the accuracy of more precise instruments by processing the gyroscope output signal. First, a calibration algorithm develops a set of coefficients to predict drift. Second, an adaptive operational algo... | 08/18/1998 |
| 5329816 | Electrode pattern intended for tuning fork-controlled gyro A tuning fork-controlled gyro includes two legs and a base part, one end of each leg being connected with the base part and the legs being freely vibratable and provided with an electrode pattern comprising drive electrodes for generating a vibration in t... | 07/19/1994 |
| 4275605 | Acceleration sensitive gyroscope stabilized platform An inertial measuring unit which precesses about the direction of apparent acceleration as a consequence of the introduction of a mass unbalance to each of the gyroscopes in the inertial measuring unit. The mass unbalances and the rotational moments of in... | 06/30/1981 |
