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7412775 |
Gyroscope north seeker system and method
A sensor system and method for determining a relative direction to true north is provided. The system comprises at least one angular rate sensor, such as a MEMS sensor, which has an input axis and...
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7194813 |
Gyrocompass
A gyrocompass has a gyrosphere which incorporates a rotor and floats in a liquid tank filled with an electrolyte, and a plurality of electrodes which are disposed in the gyrosphere and the liquid...
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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...
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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...
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6915584 |
Compass with electromagnetic half-shell transformer energy transmission and optoelectronic data signal transmission
The invention concerns a compass having an electro magnetic half-shell transformer energy transmission and opto electronic data transmission. To avoid a slipring connection during the transfer of...
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6892118 |
Pictographic mode awareness display for aircraft
A device, method and computer program for generating and displaying graphical displays symbolic of current and available operational modes of instrument systems, such as navigation and autopilot...
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6842991 |
Gyro aided magnetic compass
An improved method, system, and device for a compass combining an electronic magnetic compass and an angular velocity sensing gyroscope. One aspect of the invention integrates an angular velocity...
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6816064 |
Escape apparatus detecting an emergency situation and providing illumination
A survival device for use in an emergency situation includes a battery, a lamp, and a detection circuit for detecting an occurrence of the emergency situation and for switching the lamp to be...
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6631563 |
Survey apparatus and methods for directional wellbore surveying
Wellbore survey methods and apparatus for wireline and measurement-while-drilling operations are disclosed which include a gyroscope, wherein the gyroscope has a spin axis, aligned with the...
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6615501 |
Angle detection device with a data transmission path on an n.360° bearing assembly of a gyro compass
An angle detection device with a data transmission path on an n·360° bearing assembly with at least one scanning disk ( 21 ) arranged on one of two components at right angles to the axis of...
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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...
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6453570 |
Electrically driven floating gyrocompass
A gyrocompass having a capsule, mounted to float in an air-tight fashion, for at least one electrically driven gyro. The capsule is produced from two mutually adapted shells which are sealed with...
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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...
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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...
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6047237 |
Compass precalibration method
A method of installing a compass system includes the steps of mounting the electronic compass in a vehicle, coupling the electronic compass to a power source of the vehicle, downloading...
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5982487 |
Inertial sensor arrangement with a heat insulated rigid sensor block
An inertial sensor arrangement comprises a fiber gyro which responds to the horizontal component of the angular rate of the earth. A fiber coil of the fiber gyro is arranged at a positioning frame...
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5974675 |
Navigation unit
A navigation unit having a gyro sensor mounted thereon. The unit includes a mounting mechanism for changing the mounting direction of the gyro sensor so that the rotation detecting axis of the gyro...
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5789671 |
Azimuth misalignment determination in an inertial navigator
A process and algorithms to determine and correct for the error in azimuth alignment and the errors in "North" and "East" Gyro Drift Rates in an inertial navigator which has been aligned via...
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5778543 |
Inertial sensor unit
An inertial sensor unit for determining north, has a housing and a positioning gimbal rotatably mounted in this housing about a substantially vertical axis. A releasable, cooperating detent...
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5771596 |
Container for liquids including a level control and a gyro compass
A first liquid container has therein a level control including a float valve, a storage tank or second container and a third container having therein a liquid which is maintained at a fixed liquid...
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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...
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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...
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5375336 |
Gyro-compass
A support base of an angular velocity sensor is supported rotatably at one end, and the support base is vibrated by a piezoelectric element. By this vibration, a known rotational angular velocity...
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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....
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5349757 |
Tape-suspended meridian gyro
A tape-suspended meridian gyro has an outer housing, an intermediate housing movably mounted in the outer housing and a gyro having substantially horizontal spin axis. The gyro is suspended by...
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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...
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5187870 |
Gyro compass
A gyro compass according to the present invention includes an inclinometer for detecting inclination of the spin axis of a rotor with respect to the earth's surface, a horizontal axis torque...
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5166882 |
System for calibrating a gyro navigator
The present invention relates to a system for calibrating translation equons of a gyro navigator of a submarine. A value of velocity and a value of position of the submarine are produced by using...
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5117559 |
Method of improving the north seeking result
In a process for filtering the consecutive results yi of a north-seeking gyroscope which are ooverridden by interference signals, the difference between the extreme measured values within a time...
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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...
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5086568 |
Geological gyrocompass
The geological gyrocompass is an accurate, portable instrument useful for geologic mapping and surveying which employs an aircraft gyrocompass, strike reference bars, a pair of sights and leveling...
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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...
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4924593 |
Method for aligning a two-axis platform
A two-axis platform comprises an azimuth gimbal rotatable about an azimuth axis. In the azimuth gimbal an inner gimbal is mounted about an axis. A two-axis gyro having input axes and a spin axis is...
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4920655 |
High speed well surveying and land navigation
Land vehicle navigation apparatus combining an inertial angular rate sensor having a sensitive axis, with an inertial acceleration or tilt sensor having at least two sensitive axes, these sensitive...
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4862049 |
Constant area pulse generating network
A system for generating substantially constant area pulses suitable for application to an inertial instrument torquer. The torquer current pulses are directly utilized to provide an averaging...
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4811233 |
Cost-optimal state feedback controller for all-attitude gimbal system
An improved cost-optimal state feedback control system for stabilizing the nertial reference platform in all-attitude inertial guidance systems which uses the "region" control concept. It reduces...
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4760299 |
Distortion free synchro
A resilient strain relief elastomer is placed between the stator of a synchro and its housing so that radial distortions of the housing are absorbed by the high shear compliance of the elastomer....
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4706388 |
Borehole initial alignment and change determination
A borehole survey apparatus includes an angular rate sensor, a tilt sensor, a rotary drive to rotate the sensors about an axis extending in the direction of the borehole, circuitry connected with...
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4686771 |
Gyrocompassing apparatus for stationary equipment
Gyrocompassing apparatus for stationary equipment is disclosed which provides heading and two-axis tilt information while utilizing a minimum complement of relatively low cost components. The...
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4603483 |
Thermal gradient compensator for fluid rotor gyroscopic apparatus
A fluid sphere gyroscope is used as the north-seeking sensing element in a gyrocompass. A sensor responsive to angular deviation of the gyroscope from the horizontal provides a tilt signal which is...
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4599803 |
Heading indicator and method of using
A heading indicator is disclosed which utilizes a one degree of freedom platform stabilized by a two degree of freedom dry flexure gyro. The output of one of the sensitive axis is coupled through...
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4530164 |
Gyrocompass for sea vehicles
Gyrocompass for sea vehicle comprising a pendular mechanism (2) with two dans, namely a rolling cardan (4) and a pitching cardan (5), a vertical fork (7) free to cooperate with said pendular...
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4512086 |
Heading indicator
A heading indicator is disclosed which utilizes a one-degree-of-freedom platform stabilized by a two-degree-of-freedom dry flexure gyro. The output of one of the sensitive axis is coupled through...
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4504857 |
Gyro-compass positioning apparatus
A gyro compass positioning apparatus is disclosed for use in lowering and accurately orienting a first object such as an underwater pipeline junction manifold to the floor of a body of water. The...
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4461089 |
Instrument for the automatic determination of North direction
By means of a two-axis, electrically restrained gyro with vertical spin axis, North direction is determined from the ratio of the horizontal components of the angular rate of the earth. The gyro is...
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4443952 |
Gyroscopic apparatus
Apparatus is operable gyroscopically to determine direction and to determine north. This apparatus includes a case (34), a gimbal (20) and a central gyro (10). The gimbal (20) is rotatably mounted...
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4442723 |
North seeking and course keeping gyro device
A gyro device arranged to be mounted in a vehicle and operable selectively as a directional gyro or as a gyro compass, which includes a gyro generating signals relative to two measuring...
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4383452 |
Transfer mechanism for a gyroscopic device
A transfer mechanism can rotate a gyroscopic device about its spin axis. The mechanism has a support that rotatably supports the gyroscopic device. This mechanism also has restraint apparatus for...
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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...
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4375726 |
Gyro compass
In this gyro compass the direction-indicating gyro system is suspended pivotably in all directions from a pendulum, which is mounted to rotate about a vertical axis in a frame integral with a ship,...
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