IMPROVEMENTS IN OR RELATING TO SINGLE PHASE OR POLYPHASE KILOWATT HOUR METERS OR ENERGY METERS

摘要

An improved single phase or polyphase kilowatt hour meter or energy meter comprising a rotor having a horizontal metal disc mounted on a vertical spindle, a current coil being connected in series with the load in the supply circuit and a voltage coil connected across the supply lines, the resultant of the magnetic force of the voltage and the current coils causing the said disc to rotate, a permanent magnet acting on the said disc as a brake a worm and a worm wheel provided with the said spindle to actuate an indicator for registering the units consumed is characterized in that the said rotor is suspended in the meter with the top end of the said spindle held by a generally known top bearing secured to the frame structure of the meter with the top end of the said spindle held by a generally known top bearing secured to the frame structure of the meter while the bottom of the said spindle is suspended by means of a bearing having two halves of cylindrical axial oriented permanent magnets with the like poles facing each other being provided with iron or steel inserts or itself being shaped, the bottom half of the two halves of the said cylindrical axial oriented permanent magnets being freely and rotatably suspended in air by the repulsive forces of the said two halves of the magnets.