The inner mold (12) has flanges (12a) which may be secured mechanically.

The outer sleeve supports the spokes (24) in flanges (21, 22).

The recesses (41) have faces (42, 43) between which an axis (45) extends.

The inner sleeve, consisting of two nested cylinders, comprises flanges which co-operate with the flange (45) of the inner sleeve (40) of the second bearing device.

The box for holding electronic cards is comprised of side plates (1, 2) provided with slides (G, G') consisting of pincers (3, 4).

The inventive coil comprises a drum with flanges on the end faces thereof and flange reinforcing ribs not projecting beyond the external dimensions of the flanges.

The collars comprise slide guides.

Specialized choke flanges prevent the escape of electromagnetic energy.

A drive shaft penetrates one of the flanges.

The link plates (3) of adjacent chain links (2) also have areas (21, 22) which overlap each other and form trains (6, 7) of link plates.

Said axle (13) receives a flap (13a) which passes through each of the side panels (8), via the slot, and which extends outwards from said side panel.

The crankshaft includes a crank pin, pivots and crankshaft collars.

The bearing end-plates on the inside of the motor are adapted to the shape of the end windings of the stator winding, whereby at least one end-plate is provided with guide-blades.

The inner mold (12) has flanges (12a) which may be secured mechanically.

A table member that has a curvature corresponding to the outward arcuate edge of the web members is placed in contact with the projections along the outer arcuate edge of the web members.