Patent ID: 8807576

Claim:
A gas spring assembly comprising: a first flexible wall extending peripherally about a longitudinal axis and between a first end and a second end spaced longitudinally from said first end; an end member secured across said first end of said first flexible wall and forming a substantially fluid-tight seal therewith; a gas spring piston extending longitudinally between opposing first and second piston ends, said gas spring piston including an outer side wall extending longitudinally from along said first piston end toward said second piston end, said second end of said first flexible wall secured across said first piston end of said gas spring piston and forming a substantially fluid-tight seal therewith such that a spring chamber is at least partially defined by said first flexible wall between said end member and said gas spring piston, said outer side wall including an outside surface with said first flexible wall disposed in abutting engagement along at least a portion of said outside surface of said outer side wall of said gas spring piston such that said first flexible wall forms a rolling lobe displaceable along said outside surface; and, a compressible bladder including a second flexible wall extending at least partially around said gas spring piston and at least partially defining a bladder chamber that is fluidically isolated from said spring chamber, said second flexible wall disposed along said gas spring piston in spaced relation to said first piston end in a direction toward said second piston end such that at least a portion of said outside surface is exposed for abutting engagement with said first flexible wall; said gas spring assembly displaceable between a first condition in which said firs flexible wall is disposed in spaced relation to said compressible bladder and a second condition in which at least a portion of said first flexible wall compressively engages said second flexible wall.