Abstract: A bicycle seat suspension assembly includes a gas spring, a seat holder and a device for attachment to seat post. The gas spring is a compression gas spring with dampening, which has a working cylinder with a working cylinder bottom and a working cylinder lid, and a piston arranged in it for sliding. A piston rod sealingly goes through the working cylinder lid. A transfer hole for transfer of working gas between the working cylinder and reservoir created inside the piston rod is arranged in the piston. The transfer hole is provided with a throttle element, which is axially movably placed on a control rod, going sealingly through the lid of the reservoir. The seat holder is attached to the gas spring, not rotably in relation to the working cylinder, and it is fixedly connected with an end of the piston rod, which extends into the working cylinder with its other end bearing the piston. The device for attachment to the seat post is arranged at the closed end forming the working cylinder bottom.

Abstract: This invention concerns a gas spring having a working cylinder and therein a slidably arranged piston, whereas the working gas is, in order to provide for springing and dampening, optionally transferable between the working cylinder and the reservoir, characterized in that the reservoir is arranged in the piston rod. The gas or air spring according to this invention is self-dampening in both directions, i.e. at compression as well as at the extension. At compression it behaves as an air spring with dampening and at the extension it also behaves as an air spring with dampening, whereas both these damping effects can be, as regards the magnitude of the dampening, controlled independently from each other.

Abstract: A pneumatic spring consists of a hollow working cylinder (1) with a first end (2) being adapted for fixing to one suspended object and with a second end (12) being closed, a sealed piston rod (60) going through this second end (12), one free end of the sealed piston rod (60) going out of the working cylinder (1) is adapted for fixing to a second suspended object and the second free end interfering into a working space (10) of the working cylinder (1), wherein the working space (10) being closed with the bottom (3) of the working cylinder (1) first end (2) or with a piston (61) connected with the second free end of the piston rod (60) and interconnected through interconnection holes (35) of the working cylinder (1) with an outer storage space (33) of a work medium, wherein according to the invention a cylindrical gear pivot (20) is seated coaxially with the piston rod (60) in the second end (12) of the working cylinder (1), the end of the gear pivot (20) going out of the working cylinder (1) is fitted with act