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| Number | Title | Issue Date |
| 7174270 | Rotation angle detecting apparatus and method of detecting rotation angle A rotation angle detecting apparatus having a reference signal-generating device that generated a reference signal; a rotation angle detecting section that generated an output signal in response to the reference signal; a feedback control section that determines a r... | 02/06/2007 |
| 7171853 | Magnetohydrodynamic (MHD) actuator sensor An MHD sensor/actuator is provided for generating torque as well as sensing angular displacements around a sense/torque axis. A column of conductive liquid which rotates within a circumferential channel having an inner circumferential surface and outer circumferenti... | 02/06/2007 |
| 7124656 | Gimbal mechanism Provided is a gimbal mechanism comprising a support stand, an outer frame and an inner frame. The support stand includes a spaced pair of L-shaped legs comprising a first member having at least one first slot formed therethrough. The outer frame is nested within the... | 10/24/2006 |
| 6173611 | MHD sensor for measuring microradian angular rates and displacements An angular rate sensor which measures submicroradian angular displacements. An MHD sensor is provided having a cylindrical column of conductive fluid, centered about a measurement axis. The magnetic field for the device is generated from permanent magnets... | 01/16/2001 |
| 5487304 | Superconducting dual junction gyroscope apparatus A gyroscope for detecting angular velocity includes a closed housing having a plurality of nested layers of superconducting material with the majority of these nested layers being divided so as to disrupt the path of superelectrons traveling within the su... | 01/30/1996 |
| 5176030 | Low frequency angular velocity sensor A magnetohydrodynmic angular rate sensor is described. A housing supports first and second coaxial proof masses in respective annular channels, permitting relative motion between the axis of the proof masses and the housings. First and second magnets asso... | 01/05/1993 |
| 4270387 | Drift compensated gyroscope A gyroscope which has a spinning fluid filled annulus as an inertial angle rate sensor is compensated for inertial drift by resolving an output signal from the sensor into acceleration proportional components related to the gimbal axes and the component r... | 06/02/1981 |
| 4213343 | Kinematic inertial sensor A kinematic inertial sensor is provided for measuring angular velocity and position relative to inertial space about one or more measurement axes. The kinematic inertial sensor includes an angular rate sensor having a ring of conducting fluid contained in... | 07/22/1980 |
| 4117729 | Inertial measurement device An inertial measurement device comprising a rotatable member having a fluid-filled chamber closed by a resilient member responsive to the forces acting on the fluid and a modulator coupled to the resilient member to alter the radiation from a light source... | 10/03/1978 |
