A gas spring and gas damper assembly includes a gas spring and a gas damper. The gas spring includes a flexible spring member with opposing end members secured thereto and at least partially defining a spring chamber. The gas damper includes an inner sleeve that is at least partially received within one of the end members and at least partially forms a damping chamber. A damper piston assembly is received within the damping chamber and secured to the other of the end members. An elongated damping passage fluidically connects the damping chamber and the spring chamber. Suspension systems and methods are also included.

An air spring for a heavy-duty vehicle includes a bellows chamber, a piston chamber, and at least one opening. The piston chamber is operatively connected to the bellows chamber. The at least one opening is in fluid communication with the bellows chamber and the piston chamber to provide fluid communication between the bellows chamber and the piston chamber. An orifice assembly is disposed adjacent the at least one opening for variably changing the size of the opening. The air spring provides damping to the heavy-duty vehicle.

An air spring with damping characteristics for a suspension assembly of a heavy-duty vehicle includes a bellows chamber, a piston chamber and an asymmetrical orifice. The asymmetrical orifice is in fluid communication with the bellows chamber and the piston chamber of the air spring. The asymmetrical orifice provides asymmetrical damping characteristics to the air spring of the heavy-duty vehicle.

An air spring with damping characteristics for a suspension assembly of a heavy-duty vehicle includes a bellows and a piston. The bellows includes a bellows chamber. The bellows is attached to a main member of the heavy-duty vehicle and to the piston. The piston includes an open bottom that is sealingly closed by a disc attached to the open bottom. The piston and the disc define a piston chamber. The piston is mounted on the suspension assembly of the heavy-duty vehicle. The bellows chamber and the piston chamber are in fluid communication with each other via at least one opening, wherein airflow between the bellows chamber and the piston chamber provides damping to the suspension assembly of the heavy-duty vehicle.

An air spring may include a first end member and a second end member spaced from each other; a flexible bellows having a first end portion airtightly coupled to the first end member, a second end portion airtightly coupled to the second end member, and a jacket mounted on the circumference of the flexible bellows and configured to support the flexible bellows.

Gas spring sensors including a millimeter wave radar source and a target surface disposed in spaced relation to the radar source. The sensors also include a millimeter wave radar receptor operable to generate a signal upon receiving the radar waves reflected off the target surface. The radar source is operable to direct millimeter-length radar waves of a frequency greater than or equal to 120 gigahertz (GHz) and a wavelength of 2.5 millimeters or less toward the target surface. A processor is communicatively coupled with the radar source and the radar receptor, and is operable to determine a displacement and a relative velocity using pulsed Doppler or continuous wave frequency modulation radar methods that rely on time of flight and frequency phase shifts of pulsed or continuous radar waves. Gas spring assemblies including such sensors, and suspension systems including one or more of such gas spring assemblies are also included.

Gas spring sensors including a millimeter wave radar source and a target surface disposed in spaced relation to the radar source. The sensors also include a millimeter wave radar receptor operable to generate a signal upon receiving the radar waves reflected off the target surface. The radar source is operable to direct millimeter-length radar waves of a frequency greater than or equal to 120 gigahertz (GHz) and a wavelength of 2.5 millimeters or less toward the target surface. A processor is communicatively coupled with the radar source and the radar receptor, and is operable to determine a displacement and a relative velocity using pulsed Doppler or continuous wave frequency modulation radar methods that rely on time of flight and frequency phase shifts of pulsed or continuous radar waves. Gas spring assemblies including such sensors, and suspension systems including one or more of such gas spring assemblies are also included.

Support and carrier assemblies are dimensioned for securement along a damper housing and dimensioned to operatively support an end member of a gas spring assembly on the damper housing as well as to form a substantially fluid-tight connected between the end member and the damper housing. The support and seal assembly can include a seal assembly with a seal carrier and at least one sealing element. The seal carrier can be dimensioned for securement along the damper housing. The at least one sealing element can be dimensioned sealingly engage the seal carrier and one of the end member and the damper housing to at least partially form the substantially fluid-tight connection therebetween. End member assemblies including such support and carrier assemblies are included. Gas spring and damper assemblies as well as suspension systems are also included.

An assembly (AS1) in accordance with the subject matter of the present disclosure can include a gas spring (200), an internally-mounted device (300) and a mounting assembly (400, 500) operatively connecting the internally-mounted device to an end member (202, 204) of the gas spring (200). The mounting assembly (400, 500) can permit at least a portion of the internally-mounted device to undergo 360 degree rotational and pivotal displacement relative the end member (202, 204) of the as spring (200). The mounting assembly (400, 500) can include a device mount (402, 502) that can be operatively secured to the internally-mounted device (300) and a retainer (404, 504) that is secured to the end member (202, 204) and operatively retains the device mount (402, 502) adjacent the end member (202, 204). The device mount (402, 502) and the retainer (404, 504) can include complimentary semi-spherical surfaces that permit the relative movement between internally-mounted device (300) and the end member (202, 204) of the gas spring (200).

A gas spring and gas damper assembly includes a gas spring assembly and a gas damper assembly. The gas spring assembly includes a first wall portion, a second wall portion disposed in spaced relation to the first wall portion, and a flexible wall section connected therebetween. The gas damper assembly includes a third wall portion disposed in longitudinally-spaced relation to the first wall portion, and a second flexible wall section connected between the second wall portion and the third wall portion. A fourth wall portion is disposed between the first and second wall sections to define two pressurized gas chambers. A damper rod connects at least the first and third wall portions. Methods are also included.