An air spring for air suspension system comprises a piston assembly and a damper assembly where the piston assembly is spaced apart from the damper assembly to at least partially define an air chamber. A seal is molded with piston walls to form an integrated piston assembly. The seal includes at least one sealing lip extending radially inward from the piston assembly at an angle that is non-perpendicular to an axis of the damper and the at least one sealing lip contacts the damper assembly when the piston assembly and the damper assembly are assembled together to seal the air chamber.

An air spring assembly is disclosed. The air spring assembly includes an upper fork tube having a base lug on one end, a lower fork tube having an opening to receive the upper fork tube in a first axial end, and a fork tube gas seal to form a gas seal between the upper fork tube and the lower fork tube. A partial cartridge tube within a portion of the upper fork tube, the partial cartridge tube including a partial cartridge tube gas seal between an outer diameter (OD) of the partial cartridge tube and an inner diameter (ID) of the upper fork tube. An annular volume formed between the ID of the upper fork tube, the OD of the partial cartridge tube, the partial cartridge tube gas seal, and the base lug of the upper fork tube.

An air spring assembly is disclosed. The air spring assembly includes an upper fork tube having a base lug on one end, a lower fork tube having an opening to receive the upper fork tube in a first axial end, and a fork tube gas seal to form a gas seal between the upper fork tube and the lower fork tube. A partial cartridge tube within a portion of the upper fork tube, the partial cartridge tube including a partial cartridge tube gas seal between an outer diameter (OD) of the partial cartridge tube and an inner diameter (ID) of the upper fork tube. An annular volume formed between the ID of the upper fork tube, the OD of the partial cartridge tube, the partial cartridge tube gas seal, and the base lug of the upper fork tube.

An air spring assembly including a damper that extends into an air cylinder float, the damper including a rod positioned having an end affixed to an end cap of the air cylinder float, a first piston affixed to the rod within the damper, a second piston affixed to the damper and having one or more seals on an outer surface thereof that sealingly engage an inner surface of the air cylinder float, wherein when a load applied to the air spring assembly is increased, the second piston and the second end of the damper move towards the end cap compressing air within the air cylinder float, wherein the air cylinder float is a solid member that does not expand as the air pressure within increases during compression, and wherein a protective membrane is positioned on an outer diameter of the air cylinder float.

An air spring assembly including a damper that extends into an air cylinder float, the damper including a rod positioned having an end affixed to an end cap of the air cylinder float, a first piston affixed to the rod within the damper, a second piston affixed to the damper and having one or more seals on an outer surface thereof that sealingly engage an inner surface of the air cylinder float, wherein when a load applied to the air spring assembly is increased, the second piston and the second end of the damper move towards the end cap compressing air within the air cylinder float, wherein the air cylinder float is a solid member that does not expand as the air pressure within increases during compression, and wherein a protective membrane is positioned on an outer diameter of the air cylinder float.

An air spring assembly including a damper that extends into an air cylinder float, the damper including a rod positioned having an end affixed to an end cap of the air cylinder float, a first piston affixed to the rod within the damper, a second piston affixed to the damper and having one or more seals on an outer surface thereof that sealingly engage an inner surface of the air cylinder float, wherein when a load applied to the air spring assembly is increased, the second piston and the second end of the damper move towards the end cap compressing air within the air cylinder float, wherein the air cylinder float is a solid member that does not expand as the air pressure within increases during compression, and wherein a protective membrane is positioned on an outer diameter of the air cylinder float.

A damper rod bushing operatively connects an end member of a gas spring and a damper rod of a damper to at least partially form a gas spring and damper assembly. The damper rod bushing is constructed for exposure to gas pressure within a spring chamber of a gas spring and damper assembly such that pre-load forces due to gas pressure within said spring chamber act on said damper rod bushing. The damper rod bushing can include an outer support element, an inner support element and an elastomeric connector element operatively connected between the outer and inner support elements such that a substantially fluid-tight seal is formed therebetween. A gas spring and damper assembly including such a damper rod bushing, as well as a suspension system including one or more of such gas spring and damper assemblies and a method of assembly are also included.

A damper rod bushing operatively connects an end member of a gas spring and a damper rod of a damper to at least partially form a gas spring and damper assembly. The damper rod bushing is constructed for exposure to gas pressure within a spring chamber of a gas spring and damper assembly such that pre-load forces due to gas pressure within said spring chamber act on said damper rod bushing. The damper rod bushing can include an outer support element, an inner support element and an elastomeric connector element operatively connected between the outer and inner support elements such that a substantially fluid-tight seal is formed therebetween. A gas spring and damper assembly including such a damper rod bushing, as well as a suspension system including one or more of such gas spring and damper assemblies and a method of assembly are also included.

A seal arrangement for an air spring system for sealing off a shock-absorbing damper is disclosed. The shock-absorbing damper is situated in a rolling tube and in another tube, where the air spring system has at least one integrated control valve for the admission of compressed air into a pressure chamber formed between the outer tube, the rolling tube, and an air spring bellows that connects the outer tube and rolling tube. The seal arrangement is arranged between an inner circumferential surface of the rolling tube and an outer circumferential surface of the shock-absorbing damper and/or between an inner circumferential surface of the outer tube and the outer circumferential surface of the shock-absorbing damper. A support ring which is of step-shaped form on an outer circumferential surface is arranged on a distal end of the rolling tube and/or on a distal end of the outer tube.

A seal arrangement for an air spring system for sealing off a shock-absorbing damper is disclosed. The shock-absorbing damper is situated in a rolling tube and in another tube, where the air spring system has at least one integrated control valve for the admission of compressed air into a pressure chamber formed between the outer tube, the rolling tube, and an air spring bellows that connects the outer tube and rolling tube. The seal arrangement is arranged between an inner circumferential surface of the rolling tube and an outer circumferential surface of the shock-absorbing damper and/or between an inner circumferential surface of the outer tube and the outer circumferential surface of the shock-absorbing damper. A support ring which is of step-shaped form on an outer circumferential surface is arranged on a distal end of the rolling tube and/or on a distal end of the outer tube.