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Class Information
Number: 324/151A
Name: Electricity: measuring and testing > Measuring, testing, or sensing electricity, per se > With permanent magnet > Permanent magnet core

Patents under this class:

Patent Number Title Of Patent Date Issued
6538423 Coil-type meter Mar. 25, 2003
5225770 Moving magnet galvanometers having a varied density winding distribution coil for a desired performance characteristic Jul. 6, 1993
5223791 Cross coil type indicating instrument having internally disposed engaging gears Jun. 29, 1993
5138968 Cross coil-shaped indicating instrument Aug. 18, 1992
5093615 Movement for an instrument having an electromagnetic control arrangement Mar. 3, 1992
5038099 Radial air-core gauge Aug. 6, 1991
5004976 Wye winding radial air-core gauge system Apr. 2, 1991
4988944 Cross coil type instrument Jan. 29, 1991
4952870 Compact taut band meter movement assembly Aug. 28, 1990
4929891 Exciting unit for internal magnet type meters May. 29, 1990
4317095 Milli-volt switching device Feb. 23, 1982
4238731 Instrument moving element with severable bridge Dec. 9, 1980
4223266 Adjustable spring regulator for setting indicating instrument pointer Sep. 16, 1980
4211992 Positioning means for limited rotation motor Jul. 8, 1980
4139821 Inner magnet type movable coil instrument with linear scale Feb. 13, 1979
4115734 Laminated driver coil for recorder pen drive mechanism Sep. 19, 1978
4052669 Linear scale electric meter with cylindrical internal magnet and two arc-shaped auxiliary yokes Oct. 4, 1977
3995214 Movable magnet meter having rotation compensating means Nov. 30, 1976
3934196 Servoed indicating apparatus Jan. 20, 1976

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