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| Number | Title | Issue Date |
| 6538423 | Coil-type meter Provided is a coil instrument which can maintain a compact configuration even when a rotary shaft at a pointer side is subjected to a deceleration rotation by way of gears. The coil instrument includes a rotor shaft having a rotor magnet and a first gear,... | 03/25/2003 |
| 5225770 | Moving magnet galvanometers having a varied density winding distribution coil for a desired performance characteristic A galvanometer is shown, which includes a cylindrical magnetic rotor polarized into two essentially semi-cylindrical poles on opposite sides of its axis. Two coil portions are disposed on opposite sides of the rotor, separated by a plane of symmetry that ... | 07/06/1993 |
| 5223791 | Cross coil type indicating instrument having internally disposed engaging gears A cross coil type indicating instrument including a coil bobbin having first and second chambers separately formed inside, a rotary shaft to which a magnet rotor and a rotary gear are secured in the first chamber, and an eccentric shaft to which a transmi... | 06/29/1993 |
| 5138968 | Cross coil-shaped indicating instrument A cross coil-shaped indicating instrument includes a cross coil structure in which two coils are wound around a coil bobbin at right angles to each other. The coil structure is electrically charged in correspondence to the amount measured so as to form a ... | 08/18/1992 |
| 5093615 | Movement for an instrument having an electromagnetic control arrangement A movement for instrument is of thin construction. A rotatably supported shaft extends through a thin magnet and supports the magnet on it. The magnet radiates a magnetic field that varies in magnetic field strength in accordance with a sine function alon... | 03/03/1992 |
| 5038099 | Radial air-core gauge A radial type air-core gauge includes orthogonally positioned pairs of stator coils wound on independent coil forms spaced radially 90 degrees apart about a central cup of a gauge case. The cup houses a permanent magnet rotor which rotates about a shaft e... | 08/06/1991 |
| 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 magnitude variations of the measurand. The size of the stat... | 04/02/1991 |
| 4988944 | Cross coil type instrument A cross coil type instrument includes a plurality of coils cross-arranged around a movable permanent magnet, a needle fastened to the movable permanent magnet through a shaft projecting from the movable permanent magnet and penetrating the coils, a reset-... | 01/29/1991 |
| 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 which a moving coil rotates. The molded one piece frame holds a... | 08/28/1990 |
| 4929891 | Exciting unit for internal magnet type meters An exciting unit used in an internal magnet type meter, wherein a spacer, having a thickness corresponding to the length of a gap, is attached to the circumference of a permanent magnet and a screw is fitted in a yoke so that the permanent magnet may be m... | 05/29/1990 |
| 4317095 | Milli-volt switching device A switching device, with a mechanism similar to that of a D'Arsonval galvanometer, acting responsive to current flow in a primary control circuit to close a switch in a secondary controlled circuit. The primary control circuit includes dual oppositely wou... | 02/23/1982 |
| 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 meter. A magnetic circuit including a yoke and magnet are con... | 12/09/1980 |
| 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 extending through the plate and leaf spring. A conducting coi... | 09/16/1980 |
| 4211992 | Positioning means for limited rotation motor A limited rotation motor having means for simultaneously positioning the fixed magnet and moving coil thereof with respect both to each other and a fixed stator. A pair of bridges transversely extend across the front and rear stator faces spanning the cen... | 07/08/1980 |
| 4139821 | Inner magnet type movable coil instrument with linear scale An inner magnet type movable coil instrument comprises a cylindrical permanent magnet magnetized to axis-symmetrically form a pair of opposite magnetic poles in a direction to the axis of the magnet; a pair of arcuate magnetic plates made of soft iron and... | 02/13/1979 |
| 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 novel laminar coil assembly rotatably mounted in a precision ai... | 09/19/1978 |
| 4052669 | Linear scale electric meter with cylindrical internal magnet and two arc-shaped auxiliary yokes An electric meter comprises a cylindrical internal magnet so magnetized as to have N and S poles oriented in a direction such that a straight line connecting both poles intersects with the central axis of the magnet at right angles thereto. First and seco... | 10/04/1977 |
| 3995214 | Movable magnet meter having rotation compensating means A magnetic metering system comprising a transversely magnetized cylinder carrying a radially extending pointer and mounted for axial rotation between a diametrically disposed pair of biasing magnets and a diametrically disposed pair of solenoid coils, and... | 11/30/1976 |
| 3934196 | Servoed indicating apparatus A torque motor incorporating a permanent magnet rotor and winding therewith for providing the indicating mechanism of a servoed indicating unit. The circuitry for use with the indicating mechanism first applies a reference feedback-producing pulse, then p... | 01/20/1976 |
