Patent ID: 7934707

Claim:
A pneumatic spring with a pneumatic spring bellows ( 1 ) that forms a closed chamber ( 13 ), the pneumatic spring being in active connection with a damper ( 19 ), the pneumatic spring bellows ( 1 ) forming a hollow cylinder and the damper ( 19 ) being arranged to form a gap ( 24 ), between an inner boundary of the hollow cylinder and an outer boundary of the damper ( 19 ), in which ambient air flows for cooling the damper ( 19 ); the pneumatic spring bellows ( 1 ) comprises a first individual element ( 2 ), forming an outer boundary of the hollow cylinder, and a second individual element ( 3 ), forming the inner boundary of the hollow cylinder; a piston-like component ( 10 ) couples, at a lower end face ( 9 ) of the hollow cylinder, the first individual element ( 2 ) and the second individual element ( 3 ); the piston-like component ( 10 ) has a circular bead ( 14 ), with conical side surface ( 15 ), which couple the first individual element ( 2 ) and the second individual element ( 3 ) in a pressure-tight manner; and the circular bead ( 14 ) has at least one vent ( 12 ) by which a cavity ( 11 ), formed by the piston-like component ( 10 ), is connected to a chamber ( 13 ) formed by the pneumatic spring bellows ( 1 ).