The winding axis of the primary winding (9, 15, 21, 56, 60, 62) and the winding axis of the secondary winding (12, 18, 24, 59, 61, 63) are essentially parallel to each other on each one of the legs (2-4, 51-53).

The coil assembly includes two tooling, alignment and handling holes, and an optical passage (100) defined at the center of the coil for allowing an optical beam to pass through.

The coil arrangement comprises a winding and surrounds a flux yoke.

A primary winding can be coupled to the plurality of magnetic cores.

A first three-phase inverter is connected to one ends of three phase windings of a motor.

A curable resin is impregnated into the continuous yarn winding layer (13).

Apparatus and methods are disclosed related to spooling and unspooling linear material.

Filament winding is recommended as an effective method of incorporation of the azimuthally oriented inclusions.

The invention also concerns a ring spinning machine (1) of the type comprising a winding unit (8) of a thread around a spool (2) and a detection system (20; 60; 80) for the winding unit (8).

Pickups are Custom Shop ’50s Strat single coils.

It is further disclosed a magnetic unit or motor adapted for a winding, comprising permanent magnets having substantially triangular cross-section.

If it turns out that the winding is not damaged, it will greatly simplify the case.

The primary winding of the transformer, fixed to the rotor, is excited by an alternating current.

The conductor bars together with the inner and outer peripheries form in addition to the rotor frame also the cage winding of the rotor.

On completion of the winding operation, the rolls of material can be separated from each other, the coupling elements (2, 3) forming trunnions which project out along the longitudinal axis of the reel.