Abstract: A spring system in particular for bicycles includes a gas suspension spring with adjustable progression and a housing element for movably receiving the suspension piston of the gas suspension spring. The gas suspension spring includes a spring volume including a first spring chamber and at least a second spring chamber separated from one another by a partitioning member. The first spring chamber is arranged within the housing element and the second spring chamber extends internal of the housing portion consecutive to the housing element. One single adjustment element allows adjustment of both the damping system and the spring characteristics.

Abstract: A hub and a wheel equipped with such a hub for bicycles, wherein the hub includes a fixed hub axle and a hub body rotatably mounted relative to fixed hub axle through two bearings. The hub body includes a hub sleeve and two separate hub flanges positioned on the hub sleeve at which spokes are disposed to connect the hub body with a rim. The hub flanges are fastened to the hub sleeve by connecting members positioned substantially perpendicular to the hub axle.

Abstract: A rim and a method for manufacturing a rim in particular for bicycles in which first a rim body is manufactured having a hollow space with a radially outer and a radially inner hollow-space wall. The radially outer hollow-space wall has a diameter matched to the diameter of a tube tire and the radially inner hollow-space wall has a diameter matched to the diameter of a wire tire.

Abstract: A hub for bicycles, having an axle and a shell, two bearing units arranged substantially between the hub axle and the hub shell, and a rotor rotatably supported relative to the hub axle for receiving a sprocket the rotor, and a freewheel having two toothed disc units with biased tooth faces for transmitting the drive torque from the rotor to the hub shell. The two toothed disc units are disposed around the hub axle upon assembly, they are, at idle, disposed transverse to the hub axle. At least one toothed disc unit includes a toothed disc having a hole, a radial wall and an axial toothed wall, wherein an inner diameter of the hole is smaller at the axial wall than an inner dimension in the radial wall to form a receiving space at the toothed disc between the clear inner diameter of the axial wall and the radial wall.

Abstract: A device for absorbing shocks, in particular for two-wheeled vehicles, having at least a chamber filled with a fluid medium; at least a piston means (20) movable in the longitudinal direction of the chamber which divides the chamber at least into a first subchamber (21) and at least a second subchamber (22); at least a valve positioned between the first subchamber (21) and the second subchamber (22) which can be brought into at least two different positions, wherein at least in a, first valve position with the piston means applying a force relative to the chamber substantially no medium flow occurs at least in a first direction from the second subchamber (22) into the first subchamber (21); wherein at least in a second position of the valve (28), with the piston, means applying a force relative to the chamber, medium flow occurs at least in the first direction from the second subchamber (22) into the first subchamber (21).

Abstract: The invention relates to a rim and to a method for its production, in particular for bicycles, using a machining device for the working a welding burr of the rim. The machining device comprises a machining means working the outer contour of the rim and a another machining means working the inner contour of the rim, that has an outer diameter being less than the width of the rim well. The main steps of the method include movement of the first means along the outer contour of the rim to work the welding burr on the outer contour and movement of the second means along the inner contour of the rim to work the welding burr on the inner contour. During machining the inner contour the rim is pivoted around an axis by a predefined angular range.

Abstract: A method for manufacturing a hub in particular for bicycles and the like, wherein a winding device comprising at least a first shaping device is provided, a predetermined quantity of fibers is deposited on said first shaping device, at least a first cross-linking agent is deposited on at least part of the fibers, said first shaping device is inserted into a second shaping device and said first shaping device with at least said fibers and at least said first cross-linking agent is expanded toward said second shaping device, wherein said shaping devices are matched relative to each other such that an expanded body comprising said fibers and said cross-linking agent has a substantially even thickness.

Abstract: The present invention relates to a spring system for bicycles having a first load-applying segment and a second load-applying segment as well as at least one positive spring and at least one negative spring arranged to be effectively operable between the first and the second load applying segments.

Abstract: The invention relates to a rim and to a method for its production, in particular for bicycles, using a machining device for the working a welding burr of the rim. The machining device comprises a machining means working the outer contour of the rim and a another machining means working the inner contour of the rim, that has an outer diameter being less than the width of the rim well. The main steps of the method include movement of the first means along the outer contour of the rim to work the welding burr on the outer contour and movement of the second means along the inner contour of the rim to work the welding burr on the inner contour. During machining the inner contour the rim is pivoted around an axis by a predefined angular range.

Abstract: The present invention relates to a spring damper system for bicycles having a first load-applying segment, a second load-applying segment, at least one spring mechanism, a damping means, and a regulating mechanism that automatically effects a damping behavior of the damping means based on a tension or load present in the at least one spring mechanism. A method of spring suspension and damping of bicycles is also provided.