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Match Document Document Title
7912587 Method of balancing a gas turbine engine rotor  
A method of balancing an assembly of rotary parts of a gas turbine engine comprising measuring at least one of the concentricity and parallelism of each component and considering globally all...
6940269 Meter unit having magnetic pointer position detector  
A speed meter unit has a magnetic pointer position detector, including an output coil, a detection coil and a magnetic piece. The output coil generates magnetic flux. The detection coil is for...
6731092 Apparatus and method for initializing stepper motor  
A stepper motor is initialized so that the exciting signal is applied to coils with the step shifted by half of one electric cycle from the rebounding step being synchronized with the timing when...
5783939 Stepper motor gauge calibration by AC feedback  
A high frequency AC probe signal is applied to one coil of a stepper motor to induce a signal on the other coil. The induced signal varies in amplitude according to rotor position. The stepper...
5378980 Cross coil type indicating instrument with an externally adjustable stopper plate  
A cross coil type indicating instrument is improved in that a coil bobbin keeps a torque sufficient to hold a stopper plate as a zero point stopper to prevent a positional deviation of the stopper...
5214597 Cross coil type indicator  
In a cross coil type indicator having a pair of cross coils arranged in quadrature, a magnet rotor having a shaft and a pointer attached to the shaft and rotatably positioned within the coils, the...
5146158 Externally adjustable stopper plate in a cross-coil type meter  
The cross coil type meter has a magnet rotor and a stopper plate inside a coil bobbin. The magnet rotor is driven by a combined magnetic field produced by a cross coil wound on the coil bobbin. A...
5062135 Cross coil type indicating gauge  
An indicating gauge for automobiles for displaying the amount of a measurement on a gauge board by a movement. The movement comprises a pair of coils for generating a combined magnetic field in...
5027656 Fuel gauge damper circuit with a return to zero gauge circuit  
A fuel gauge damper circuit takes a variable resistance signal from a fuel tank sending unit, develops an input voltage proportional to the variable resistance and generates a filtered average of...
5017862 Air-core meter having improved bobbin design  
An air-core meter having a two-piece bobbin enclosing and surrounding a moveable magnet within a sealed cavity containing a damping fluid. The magnet is rotated about the axis of a supporting...
5012184 Adjustment of disposition of rotation axis in moving coil measuring instruments to correct for their non-ideal operation  
A moving coil measuring instrument wherein at least one end of the axis (3) of rotation of the moving coil (1) is supported so as to permit adjustment of that end of the axis (3) in a direction...
5004976 Wye winding radial air-core gauge system  
A wye-type air-core gauge system provides magnitude indications of measurands in response to PWM signals generated by a control unit that receives electrical signals from a sensor that represents...
4956601 Apparatus for measuring an electrical quantity with an adjustable zero position and double pivot arrangement  
Apparatus for measuring an electrical quantity comprises a fixed body and a movable device having a pivot shaft fixed to an indicator needle which moves in front of a graduated scale. The movable...
4952870 Compact taut band meter movement assembly  
A taut band meter movement assembly comprising a one piece movement frame functioning to hold and center a magnet core, and hold and center spring members for supporting a ligament wire about...
4924178 Drive apparatus for a cross coil type meter  
A drive apparatus for a cross-coil type meter has cross-coils formed of a first and a second coil disposed intersecting at the center thereof. A magnet rotor is disposed in a magnetic field set up...
4906919 Moving magnet type meter  
In the moving magnet type meter of the present invention, the coil mounting portions of a bobbin body are projected outwards in a generally arched shape on the central side to form circular...
4673874 Annular rotor disk for electric meter  
A disk for an electric meter includes a solid annulus of a conductive material with a center of the annulus filled with a non-conducting material. The non-conducting material is preferably molded...
4564806 Taut band instrument having accurate taut band positioning means  
A taut band instrument having a moving coil hung by a pair of taut bands to measure electrical current and the like by way of rotating a moving coil in magnetic field. A pair of boss members are...
4553093 Tachometer  
A detection signal of a frequency corresponding to a rotational frequency is applied to a frequency-voltage converter and its converted voltage signal is provided to a sine-cosine current...
4496902 Taut band type instrument suitable for automatical assembly  
A taut band type instrument comprising a support member supporting thereon a moving coil, a pair of clips electrically connected to the moving coil and mounted on the support member in mutually...
4459995 Indicating device for use in a device for measuring and indicating changes in resistance of a living body  
In accordance with the invention there is provided an electrical resistance measuring indicating device including a bridge network having on one side thereof a first resistance arm connected to a...
4440271 Viscous dampening arrangement for taut-band suspension  
An improved viscous dampening arrangement for a taut-band suspension system in an electrical indicating instrument includes a hub associated with the stator and a turret associated with the rotor....
4370613 Galvanometer with molded outer layer under hoop stress  
The invention relates to a limited rotation galvanometer having a shaft adapted to be deflected in accordance with an electrical drive signal applied to the galvanometer, the galvanometer...
4291268 Apparatus for driving a deflecting coil type meter  
A time-constant circuit is employed for gradually decreasing the voltage of an input signal carrying information to be indicated by a deflecting coil type meter so that the voltage of an input...
4253062 Shielded electrical current indicating meter  
A compact and symmetrically arranged construction for electrical current indicating meters of small size. The meter construction comprises a concentrically pivoted coil which encircles a rounded...
4251771 Magnetic system for electrical current indicating meter  
A compact and symmetrically arranged construction for electrical current indicating meters of small size. The novel construction for a meter comprises combinations of magnet components including...
4238731 Instrument moving element with severable bridge  
An electric meter particularly characterized by a small number of moving parts and simplified assembly by virtue of fixed cooperating locating surfaces on the elements and sub-assemblies of the...
4237418 Electrical current indicating meter  
A compact and symmetrically arranged construction for electrical current indicating meters of small size. The novel construction for a meter comprises a unitary frame member combined with...
4223266 Adjustable spring regulator for setting indicating instrument pointer  
Adjustment of an electrical measuring instrument of the D'Arsonval type is achieved by rotation of an annular leaf spring contact mounted to rotate between an annular plate and a flanged eyelet...
4211972 Self contained filar suspended meter rotor  
A meter rotor includes a preferably hollow shaft for caging filaments or ribbons, means such as openings on the shaft for engaging a coil, a pair of axially movable end caps engaging opposing ends...
4206406 Means for adjusting the zero point setting of a meter  
Adjustment of the zero point of an instrument is achieved by rotation of a rotary element extending through the casing of the instrument. The rotary motion of the rotary element is translated into...
4203068 Vibrating coil assembly  
A vibrating coil assembly for mirror galavanometers, light-beam oscillographs and the like having a mirror and a moving coil suspended by taut wires or ribbons. The ends of the wires nearest the...
4180774 Regenerative method and apparatus to control an elastic reset torque in movable apparatus  
The suspension of movable system instruments, for example, a galvanometer, introduces elastic reset torques upon deflection. To compensate for such torques and render the apparatus essentially...
4140968 Damping of electrical measuring instruments  
An improvement to an electrical measuring instrument having a rotary moving part capable of longitudinal movement in relation to the remainder of the instrument and including a damping arrangement...
4140969 Compact moving coil meter and rotor assembly  
A compact meter with a unitary bridge including magnet support legs to which a magnet is clamped by a magnetically permeable plate and a U-shaped magnet support. Locating surfaces on the bridge...
4115734 Laminated driver coil for recorder pen drive mechanism  
A pen recorder driving mechanism for deflecting a recorder pen on a writing medium in response to electrical input signals is disclosed. The improved pen recorder driving mechanism includes a...
4044305 Apparatus for providing a displacement representative of the magnitude of a signal  
A device for providing a displacement representative of the magnitude of a signal. The device typically includes a rotor having a plurality of sections of high permeability material separated by...
4024472 Meter construction  
A moving coil instrument with a unique base of nonmagnetic sheet metal construction so arranged that sides of the base can flex to receive and clampingly retain a magnetic circuit, without causing...
4019137 Moving coil type instrument  
A long-scale moving coil instrument of the type comprising a frame, means including an arcuate core member secured to the frame for forming a magnetic circuit path, and a mounting member carrying...
3983478 Moving coil instrument having electrically conductive coil form parts connected to the coil  
An electric meter particularly characterized by a small number of moving parts and simplified assembly. A coil assembly initially including integral support elements which permit connection of...
3932809 Deflector galvanometer  
A galvanometer structure is disclosed for high speed deflection of a light beam, such as that from a laser source. A flexible member is secured at one end in a mount of electrically insulating and...
3899736 Vibration-resistant device for taut band suspension type indicating instrument  
A vibration-resistant device for electrical indicating instruments of the type comprising a magnet, a moving coil, and a taut metal band which serves as the rotating axis of the moving coil...
3891922 Pivoted armature instrument for an electromagnetic recording system  
A pivoted armature instrument for an electromagnetic recording system. There is disclosed an electromagnetic device which utilizes interaction between permanent and current-induced magnetic fields...
3891923 Unit for assembling elements of taut band suspension type indicating instrument  
A unit for assembling elements of an electrical indicating instrument of the type having a taut band which, serving as a rotating axis of the indicating mechanism, suspends the meter movement and...
3885214 Moving coil system for light-beam galvanometers, light-beam oscillographs and the like  
A moving-coil system for a light-beam galvanometer, light-beam oscillograph and the like includes a suspending element with a mirror attached to the suspending element. A single rotatable coil...
3878462 Taut band suspension system with strain relief  
A band strain relief for a measuring instrument having a moving element supported by a taut band suspension. Elastic material applied to the band adjacent to the band anchor provides a strain...
3855532 ELECTRICAL GAUGE INDICATOR RETURN DEVICE  
An indicator return device for an electrical gauge which produces a reading when electrical power is supplied to it, but which requires means for producing torque to return its indicator to a zero...
3786353 COIL FORMING APPARATUS METHOD AND GALVO-MOTOR PRODUCT  
A contour molded galvo-motor coil together with the forming apparatus and the specific method of manufacture. A low inertia coil is formed which also allows a smaller air gap in the magnetic...
3764909 METER CONSTRUCTION HAVING RAPID ASSEMBLY FEATURES  
An electric meter particularly characterized by a small number of moving parts and simplified assembly by virtue of fixed cooperating locating surfaces on the elements and sub-assemblies of the...
3753107 MAGNETIC GAUGE WITH TWO V-POSITIONED COILS AND HAVING MAGNETIC RESTORING RING  
Magnetic gauge in which two electrical coils are positioned to form a V between them such that their axes intersect at a point intermediate and exterior of the coils. A permanent magnet is...

Matches 1 - 50 out of 135 1 2 3 >