Patent ID: 6925925

Claim:
A piston ( 1 ) for a compressor, in particular a coolant compressor of an air-conditioning system, comprising: a piston head ( 2 ) by means of which a medium can be compressed, a piston stem section ( 3 ) extending from the piston and guiding the piston in an axially displaceable fashion in a cylinder housing, and a force application section ( 4 ) for the application of a drive force to the piston head ( 2 ), said piston head ( 2 ), said piston stem ( 3 ) and said force application section ( 4 ) being arranged one after the other in the direction of the piston axis, said piston stem ( 3 ) having a solid strut structure ( 5 a , 5 b ) oriented in the direction of the piston axis and having a cross-sectional area smaller than the area of the piston head ( 2 ), and said piston stem ( 3 ), said force application section ( 4 ) and said piston head ( 2 ) being formed integrally from a nonorganic and nonmetalic material having an average thermal expansion of less than 7*10 −6 /° C. in the temperature range between 0° C. and 200° C.