with one end 12 being u2018 straight u2019 and the other end 14 being u2018 bent u2019 application_number US 70977310 A description an example of an improved pre formed single layer coil 10 for a rotating electrical machine is shown in fig3 and 4 the coil 10 is formed from one or more insulated conductors as a complete loop and has several turns when viewed from the side fig3 it can be seen that a first endwinding 12 is u2018 straight u2019 and a second endwinding 14 is u2018 bent u2019 such that it extends away from a longitudinal axis la of the coil 10 when viewed from the top fig4 it can be seen that the first and second endwindings 12 14 join together two winding runs 16 of the coil as described in more detail below the winding runs 16 are parallel to each other in both the axial direction of a stator of the electrical machine and the direction in which they extend into the stator in use however a single layer coil with a u2018 straight u2019 endwinding and a u2018 bent u2019 endwinding may also be formed with winding runs that are parallel in the axial direction of the stator of the electrical machine but which are designed to be inserted into slots that are oriented along a radius of the stator in the conventional manner fig5 to 7 show part of a stator 18 for a rotating electrical machine the stator 18 is constructed to surround a rotor not shown and would be separated from it.