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| Number | Title | Issue Date |
| 6331184 | Detachable covering for an implantable medical device An endoprosthesis cover may be attached to the distal end of a delivery device. The cover may be generally cylindrical in shape and may have a lumen through it. An endoprosthesis may then be covered as it is delivered to a treatment site.... | 12/18/2001 |
| 6208414 | Modular laser gyro A modular laser gyro incorporating a laser gyro with a digital control processor. The digital control processor safely and quickly starts the laser gyro. The microprocessor also executes tests on the gyro and provides a health signal. Optional start-up op... | 03/27/2001 |
| 6130827 | Power supply gamma protection apparatus A voltage source supplies power to a ring laser gyro and includes a pulse width modulator that charges an output capacitor network. An apparatus connected to the pulse width modulator assumes control so that the pulse width modulator continues to produce ... | 10/10/2000 |
| 6115261 | Wedge mount for integrated circuit sensors A sensor mount for mounting a sensor to a substrate having a support member, a substrate attachment surface, and a sensor attachment surface. The support member can be attached to the substrate at the substrate attachment surface and the sensor can be att... | 09/05/2000 |
| 6108358 | Apparatus for minimizing the effects of laser intensity reduction at cold temperatures in ring laser gyros A circuit for controlling the run current in a ring laser gyro includes circuitry for sensing temperature, supplying a current to the ring laser gyro and controlling the current supplied to the ring laser gyro and the current varies depending on the tempe... | 08/22/2000 |
| 6085149 | Integrated inertial/VMS navigation solution A system for determining accurate inertial navigation data of a vehicle while moving must compensate for the orientation differences between an upper body and a lower body of the vehicle. These orientation differences are used to increase the accuracy of ... | 07/04/2000 |
| 6081638 | Fiber optic header with integrated power monitor An optical header for coupling a light source to an optical fiber is disclosed. The header preferably includes a ceramic substrate that has a recess for a vertical cavity surface emitting laser (VCSEL), or alternatively an edge emitting laser. An optical ... | 06/27/2000 |
| 6072580 | Method for anodically bonding an electrode to a ring laser gyro block A method for forming an electrode seal between an excitation electrode and a laser block in a ring laser gyro having increased bond durability, strength, and greater resistance to solvents and reactive compounds. A thin ring of sealing material is positio... | 06/06/2000 |
| 6046810 | Kerr effect compensator for a fiber optic gyroscope An interferometric fiber optic gyroscope having compensation electronics to virtually eliminate rotation rate sensing errors caused by Kerr effect in the IFOG due to differing intensities of the counter-propagating beams relative to each other. Compensati... | 04/04/2000 |
| 6038025 | Method for manufacturing of fiberoptic gyroscope by providing a flexible connector connected to the coil and remaining gyroscope elements A method for fabricating a fiberoptic gyroscope and the fiberoptic gyroscope produced thereby are disclosed. The method and apparatus are characterized in that optical coils are connected to a substantially rigid member through flexible connectors, thereb... | 03/14/2000 |
| 6025914 | Cathode seal including migration resistant dielectric material An apparatus and method for prevention of migration of mobile ions in a gyroscope. A dielectric barrier material layer is placed between a gyroscope body and one or more gyroscope components. The dielectric barrier material layer reduces the electric fiel... | 02/15/2000 |
| 6025800 | Interferomeric synthetic aperture radar altimeter Aircraft position determination system includes a transmitter to transmit a signal, and two receivers to receive the transmitted signal reflected from the terrain below the aircraft, and a phase comparison apparatus operating from the two receiver's input... | 02/15/2000 |
| 6014217 | Fiber optic gyroscope scattering error reduction An error reducer for reducing rotation rate backscattering errors in a rotation sensor by adjusting amplitudes of bias phase modulators introduced phase changes or amplitudes of a backscatter phase modulator introduced phase change and bias phase modulato... | 01/11/2000 |
| 6008946 | Ambient light display illumination for a head-mounted display A head mounted display in which ambient light is used to illuminate a display to at or near the brightness of the scene being viewed when both reach the user's eyes. A small supplemental light source may further be used to increase the range of operation ... | 12/28/1999 |
| 6005665 | Job zone for a high performance navigation grade rate sensing coil A fiber optic gyroscope that includes an improved winding transition section otherwise known as a "jog zone". The improved jog zone reduces losses due to micro-bends and cross-coupling in the fiber optic coil. The reduced losses enable a more accurate mea... | 12/21/1999 |
| 6002707 | Spread signal spectrum communication circuits and system The present invention provides a covert radar system in which radar signals emitted are capable to search receiver thermal noise and, therefore, are substantially undetectable in the normal radar operating range.... | 12/14/1999 |
| 6002481 | Fiber optic gyro with noise dither circuit for enhancing A/D conversion resolution A signal processing circuit for a fiber optic gyroscope which prevents glitches from saturating the photodetector and gain stages of the detection electronics by inserting random noise in the detected signal is disclosed. This technique allows one to cont... | 12/14/1999 |
| 5999304 | Fiber optic gyroscope with deadband error reduction A deadband error reducer for a fiber optic gyroscope, which is an offset modulation signal that averages the deadband producing error over the range of the feedback modulation signal provided to the phase modulator. Although the offset modulation signal m... | 12/07/1999 |
| 5973383 | High temperature ZrN and HfN IR scene projector pixels A structure and method of making resistive emitting members which exhibit high resistivity while at the same time providing high temperature operation significantly above that known in the art. Specifically the use of nitrides of Group IVB transition meta... | 10/26/1999 |
| 5960025 | Device and method for achieving beam path alignment of an optical cavity Disclosed is a mirror mounting device and method for beam path alignment of an optical cavity for a ring laser gyroscope. The ring laser gyroscope is of the type that includes a block having an optical cavity that defines a closed loop optical path. A lig... | 09/28/1999 |
| 5950995 | Ring laser gyroscope dither motor structure Disclosed is a dither spring structure and method of dither spring manufacture. The dither spring structure includes a central hub, an outer toroidal rim, a plurality of flexible reeds and a plurality of lobes. The reeds extend between the hub and the rim... | 09/14/1999 |
| 5946097 | Vibration rectification error reducer for fiber optic gyroscope An apparatus for eliminating or reducing vibration-induced errors due to vibration rectification by applying a variable weighting function at the demodulator or analog-to-digital converter by changing the size of the demodulator reference signal or the co... | 08/31/1999 |
| 5901369 | Headgear having an articulated mounting mechanism for a visor Disclosed is protective headgear for an aviator. The headgear includes a helmet adapted to be worn by the aviator, a visor and a mechanism for mounting the visor to the helmet. The mounting mechanism is defined by a pair of gear train assemblies, one of w... | 05/11/1999 |
| 5890569 | Vibration isolation system for an inertial sensor assembly Disclosed is a vibration isolator system for mounting an inertial sensor assembly (ISA) to a support that is subject to shock and vibration. The vibration isolator system includes a ring shaped elastomeric member, and ring shaped outer and inner members. ... | 04/06/1999 |
| 5867269 | RLG mirror conditioning and cathode oxidation process A method performed during the processing of a ring laser gyro (RLG) will produce a long life in the RLG. The method includes filling the RLG with a gas mixture. A current is discharged within the RLG which will create certain reactions to condition the RL... | 02/02/1999 |
| 5838490 | Head mounted display system using mangin mirror combiner A head mounted display which utilizes a flat image source, an optical system including a reflecting filter and a Mangin mirror having at least one curved surface, operable to make the flat image compatible with the flat image source, and provide an undist... | 11/17/1998 |
| 5838440 | Path length controller piezo/wireboard bonding pattern Disclosed is a path length control apparatus (PLC) for an optical device. The optical device, such as a ring laser gyroscope, is of the type that includes a block having an internal optical cavity that defines a closed optical path. A light source directs... | 11/17/1998 |
| 5818591 | Tailoring the RLG mirror lifetime by changing the mirror to plasma distance spacing Mirrors are tested separately at different distances to plasma in separate ring laser gyros. Testing mirrors a predetermined distance away from plasma in the gyros allows accelerated testing of the environment of the mirrors in gyros. The test results are... | 10/06/1998 |
| 5719675 | Laser gyro life prediction A laser gyro lifetime prediction method incorporates a memory model that stores a worst case performance parameter for a readout intensity, a laser intensity and a derived quantity known as volts per mode for a laser gyro. A microprocessor based life pred... | 02/17/1998 |
| 5666483 | Redundant processing system architecture Disclosed is a fault-tolerant and/or fail-safe information processing system architecture for handling information from a plurality of independent subsystems which provide information related to selected input quantities, and which includes a plurality of... | 09/09/1997 |
