Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7595633 | Velocity measurement using magnetoresistive sensors A method and a system for measuring the velocity of a projectile. The method and system employ sensors that uses magnetoresistive sensing elements to measure the velocity of a projectile. Two magnetoresistive based sensors may be used to sense a time at which a proj... | 09/29/2009 |
| 7397237 | Determining the position of the rotor in an electric motor Device for determining the position of the rotor in an electric motor comprises a detector, which is mounted on the electric motor and which is sensitive to the passage of the rotor through a reference position, and comprises a phase-locking loop, which can be synch... | 07/08/2008 |
| 7283424 | High speed underwater projectile tracking system and method A system and a method are provided to accurately track the trajectory of high-speed underwater objects. A number of hoops with means for controlling the buoyancy thereof are aligned on a range in the anticipated path of the high speed projectile. The hoops are suffi... | 10/16/2007 |
| 7267016 | Sensitized ring for use with a sensor A sensitizing ring for sensors having a reduced manufacturing cost and an improved profile shape manufacture with a diameter of 120 mm or less. The sensitizing ring of the present invention is used to measure the rate of rotation and position of a rotating element. ... | 09/11/2007 |
| 7205761 | Rotation state detecting device and rotation state detecting method A rotation state detecting device capable of detecting the direction of rotation of a rotating body includes first and second bridge circuits made up of magneto-resistance effect elements, a first comparator for detecting the increasing/decreasing direction of the c... | 04/17/2007 |
| 7196779 | Sight adjuster The present invention provides a sight adjuster for a velocity measurement system for sighting a projectile. A velocity measurement unit has a front sensor area and a back sensor area, and the sight adjuster has a front panel with a sighting bore such that the front... | 03/27/2007 |
| 7190145 | Method and apparatus for improving speed measurement quality in multi-pole machines A method and apparatus for improving speed measurement quality in systems having multi-pole machines is taught. The method compensates for pole misalignment by computing speed based upon moving average techniques. In one embodiment, a moving average speed averaged o... | 03/13/2007 |
| 7143644 | Device for collecting statistical data for maintenance of small-arms A system and method for collecting data on small-arms usage in the form of a device which is mounted to the firearm so as to be able to sense at least an impulse in the firearm due to firing. The device is mounted to the gun so as to detect impulses due to firing. A... | 12/05/2006 |
| 7116096 | Vehicle direction detection using tone ring A tone ring preferably for use in a braking system of a vehicle has a first pattern of excitation indicative of speed of rotation of the tone ring, and a second pattern of excitation including frequency variations that is indicative of direction of rotation of the t... | 10/03/2006 |
| 7113104 | Giant magnetoresistance based gyroscope A gyroscope (10) for determining rate of rotation includes a giant magnetoresistor (GMR) (14) attached to a mass (12) oscillating along a first axis. When the gyroscope (10) is rotated, the mass (12) also oscillates along a second ... | 09/26/2006 |
| 7100437 | Device for collecting statistical data for maintenance of small-arms A device for collecting data on small-arms usage that senses when a shot has been fired from a gun using its acceleration, acoustic noise or RF emissions; measures the interval between shots so that the firing rate may be determined; measures the time at which each ... | 09/05/2006 |
| 7082823 | Digital signal processing back biased hall effect muzzle velocity measurement system A system for precisely measuring muzzle exit velocity of a “muzzle loaded” mortar projectile fired from a mortar tube using two back-biased Hall effect sensors for projectile gas ring channel detection. The system includes a back-biased Hall effect sensor block,... | 08/01/2006 |
| 7061228 | Apparatus for detecting rotation of a bicycle part An apparatus for detecting rotation of a bicycle part comprises a casing member comprising a generally annular body structured to be mounted to the bicycle part so that the annular body is incapable of rotating relative to the bicycle part as the bicycle part rotate... | 06/13/2006 |
| 7026808 | Method and apparatus for providing information from a speed and direction sensor A method and apparatus for providing information from a speed and direction sensor is disclosed. The method and apparatus detect the presence of a ferromagnetic object as it moves past a sensor. The sensor determines speed and direction information regarding the fer... | 04/11/2006 |
| 7015671 | Circuit for operating an electric motor A circuit configuration for operating an electric motor is described, the circuit configuration containing a timer. As a function of a first differential signal between a setpoint signal and an actual value signal, a regulator supplies a first switch signal for feed... | 03/21/2006 |
| 6958599 | Angular velocity sensor An angular velocity sensor for a rotor (2) and method of determining angular velocity in which the position at which event generation means (4) pass sensing means (5) is determined using information from the times at which the event generation m... | 10/25/2005 |
| 6917565 | Clocking system The present invention provides a clocking system such that the magnetic sensor can detect the external magnetic field from the magnetic member that is rather far apart therefrom without increasing the sensitivity of the magnetic sensor excessively and without making... | 07/12/2005 |
| 6911829 | Inductive signature measurement circuit An apparatus for measuring the inductance of a wire-loop with noise-cancellation, auto-calibration and wireless communication features, or detector circuit. The apparatus measures the effective change in inductance induced in a wire-loop as a vehicle passes over the... | 06/28/2005 |
| 6899303 | Sensor for rail switch position Method and apparatus for detection of the presence of a train wheel on a train track that overcomes problems associated with previously known detectors. The invention includes a method for detecting the presence of a train wheel on a train track. The method includes... | 05/31/2005 |
| 6815944 | Method and apparatus for providing information from a speed and direction sensor A method and apparatus for providing information from a speed and direction sensor is disclosed. The method and apparatus detect the presence of a ferromagnetic object as it moves past a sensor. The sensor determines speed and direction information regarding the fer... | 11/09/2004 |
| 6670803 | Part feeder velocity measurement system An apparatus for determining a velocity of a part through a part feeder tube. The part feeder tube defines an axis. The apparatus includes first and second sensors spaced axially from each other by a predetermined distance (d). The first sensor sends a fi... | 12/30/2003 |
| 6663053 | Sensor for railcar wheels Method and apparatus for detection of the presence of a train wheel on a train track that overcomes problems associated with previously known detectors. The invention includes a method for detecting the presence of a train wheel on a train track. The meth... | 12/16/2003 |
| 6564635 | Bearing assembly with integral sensor for sensing rotation A bearing assembly tachometer device for attachment to a rotating shaft which comprises bearing target members disposed between a rotating inner ring member and a non-rotating outer ring to reduce friction therebetween, and a sensing device such as a Hall... | 05/20/2003 |
| 6563302 | Device for sensing projectile velocity in an underwater environment A device for sensing projectile velocity in an underwater environment is provided. The device includes a plurality of evenly spaced voltage coil members positioned in the path of a projectile. Each voltage coil member includes a support frame having an op... | 05/13/2003 |
| 6541957 | Method and apparatus for detecting motor shaft coupling features A method and apparatus for non-contact testing of a rotating shaft includes first and second proximity sensors coupled to an automated shaft testing system. Output signals from the proximity sensors are compared to empirically determined threshold values ... | 04/01/2003 |
| 6527437 | System and method for calibrating a thermocouple sensor A jig assembly for use in calibrating a thermocouple sensor includes a conductive member, a holder, and a fastener. The conductive member has a recess configured to receive a test wire and a test surface configured for thermal contact with the thermocoupl... | 03/04/2003 |
| 6437559 | Device for measuring the velocity of a magnetically receptive object A device for measuring the speed of a golf club has a pair of coils spaced a given distance apart with each of the coils forming an oscillating electro-magnetic field which are positioned to interrupt the course of the head of a golf club. When a golf clu... | 08/20/2002 |
| 6374053 | Underwater strobe light control circuitry A device for controlling a strobe light in underwater high speed photography in a first aspect includes a plurality of spaced break screen or sense coil members, a projectile for launch through the series of break screen or sense coil members, a camera ha... | 04/16/2002 |
| 6292112 | Vehicle presence detection system A passive magnetic detector is provided at ground level or buried below ground level in between rails of a railroad track at a distance from the level crossing for detecting magnetic field disturbances caused by ferromagnetic objects passing overhead on t... | 09/18/2001 |
| 6208268 | Vehicle presence, speed and length detecting system and roadway installed detector therefor An improved detector is provided for installation in a roadway surface. The detector finds utility in a highway vehicle detection system for determining vehicle presence, vehicle speed and vehicle length. First and second matched induction coil magnetic s... | 03/27/2001 |
| 6181410 | Oscillating motor, measurement device for measuring distance, speed or direction using a laser light, and vehicle having the measurement device A measurement device has a laser light source for irradiating a laser light, a reflecting mirror for reflecting the laser light irradiated from the laser light source in a preselected direction and/or for scanning the laser light within a preselected angl... | 01/30/2001 |
| 6166534 | Method and apparatus for measuring the wheel speed A method and device for calculating vehicle wheel speed which counts either one of the rise or the fall of each one of the pulse signals of the wheel sensor when the wheel speed is higher than a certain amount and counts both the rise and the fall of the ... | 12/26/2000 |
| 6064196 | Apparatus and method for calculating muzzle velocity Apparatus for measuring projectile muzzle velocity with an accuracy of &#b1;0.1% is mounted in an easily portable muzzle attachment. It operates in the following manner. A washer shaped permanent magnet is positioned on a projectile body. A position senso... | 05/16/2000 |
| 6029120 | Bow-mounted chronograph A instrument and method for measuring archery tackle performance is disclosed. A low power, electronics measurement unit attached onto or mounted internal to a bow in communication with a sensor which detects a signal from an external trigger mechanism mo... | 02/22/2000 |
| 5880367 | Vehicle steering sensor device A sensing device conveniently and accurately produces electrical signal representative of the direction in which he steerable wheels (10 and 11) of a vehicle are pointing and the rate of change of the direction of the steerable wheels. The device includes... | 03/09/1999 |
| 5844395 | Speed detection apparatus, speed control motor, and track jump control circuit A track jump control circuit includes: a head; a rotary motor which drives the head and is controlled in accordance with an input signal; a unit for detecting a speed of rotation corresponding to the rotation of the rotary motor; distance detection unit f... | 12/01/1998 |
| 5825177 | Device for measuring the speed of a rail-mounted vehicle A rail mounted vehicle speed measuring device includes a first magnetic field generating member and a first magnetic field sensing member positioned at a first measuring location on the vehicle; a second magnetic field generating member and a second magne... | 10/20/1998 |
| 5757676 | Method for measuring speed A method for measuring rotational speed in which a plurality of signal sources disposed along the periphery of a rotating system is monitored by a sensor, and the signals generated by the sensor are added by a counter to form a speed signal sum N. An asso... | 05/26/1998 |
| 5628479 | Vital wheel detector A vital wheel detector for railways injects an oscillating electrical current into a short rail segment and produces a monitor signal in response the magnetic field around the rail. A high Q pickup coil is employed which, when a car wheel is present on th... | 05/13/1997 |
| 5621314 | Method and device for determining the speed of vehicles via deriving a tripping curve The invention relates to a method and a device for determining the speed s/δt) of vehicles, in which with the aid of at least two sensors (1, 2, 27, 28) spaced apart from one another (distance s), the time δt=t1 -t2 required to dr... | 04/15/1997 |
