Amongst the elemental problems can be with its magnetic grip.

In a prior art device of this kind there is a magnetic slipping clutch in addition to each drive motor.

A magnetic slip clutch (26, 415) is disclosed, which may be fully uncoupled, fully coupled, or coupled in a modulated manner for transmission of variable torque.

The magnetic half-coupling 4 of the counting unit is kinematically connected by a step-down gearing 7 to a drive wheel 8 of the mechanical digital read-out device 2.

He collapsed on his desk on April 14, 1897 while he was busy drawing the plane of a magnetic clutch

The hermetically sealed pump head is driven by means of a powerful rare earth magnetic coupling, which prevents leaks from the drive end.

The hermetically sealed pump head is driven by means of a powerful rare earth magnetic coupling, which prevents leaks on the drive end.

A pump (10) of high pressure direct injection fuel supply system is connected to the engine through a magnetic clutch which includes a motorizing function.

The magnetic clutch comprises rotating electromagnetic coils (20) attached to and driven by the engine and rotating permanent magnets (34) attached to and driving the pump.

To that end, the output from the crankshaft (4) to an output shaft (13) disposed externally of the crankcase (3) is brought about by a magnetic or electromagnetic clutch (7, 11) acting through the wall (8) of the crankcase (3).