Patent ID: 8575816

Claim:
A refrigerant compressor comprising: a) a compressor housing; b) a cylinder housing comprising a piston disposed in the compressor housing; and c) an electric motor driving the piston, said electric motor comprising a stator disposed in the compressor housing and fastened to the cylinder housing, said stator having a stator bore, a coil core having a plurality of receiving grooves, and a stator winding received in the receiving grooves, said stator winding comprising a plurality of windings, coil groups, and poles; wherein the piston compresses a refrigerant; wherein the coil core comprises a plurality of interconnected stator segments, a first end face and a second end face; wherein the stator winding comprises winding heads near the first end face or the second end face, each of said winding heads being situated outside the receiving grooves; wherein an insulating element covers the first end face or the second end face and insulates the winding heads with respect to the coil core; wherein the insulating element has a plurality of projecting insulating sections extending from a peripheral edge thereof opposite the stator bore, said insulating sections insulating the winding heads situated on the first end face or the second end face with respect to adjacent sections of the cylinder housing; and wherein the winding heads of the stator winding are pressed against the insulating element.