Rolling-lobe air spring

An air spring comprising:

• a cover plate;
• a roll-off piston defining a first volume therein;
• an air spring flexible member defining a second volume within said flexible member and having a first end connected to said cover plate and said air spring flexible member having a second end defining a sealing bead;
• a clamping plate assembly for clamping said sealing bead to said roll-off piston;
• means for connecting said first and second volumes to each other;
• said roll-off piston having an upper end defining a sealing surface and a lower end defining a base wall;
• said clamping plate being interposed between said first and second volumes and said connecting means including at least one through hole formed in said clamping plate for interconnecting said first and second volumes to each other;
• said sealing bead of said flexible member being disposed between said clamping plate and said sealing surface;
• said clamping assembly including a threaded rod for applying a clamping force to said clamping plate to tightly clamp said sealing bead between said clamping plate and said sealing surface;
• said threaded rod being connected to said base wall;
• said clamping assembly further including at least one O-ring seal for sealing said threaded rod with respect to said base wall;
• and,
• said sealing bead having an external surface configured as a sealing zone between said flexible member and said sealing surface of said roll-off piston.