Abstract: The invention relates to a drive wheel for a bike, comprising a rim which is fastened to a hub by means of a plurality of spokes, wherein the spokes are made of reinforcing fibers embedded in resin, the reinforcing fibers of a spoke extending from a first fastening portion at the rim to a second fastening portion offset against the former in the circumferential direction and being guided along the outside of the hub, wherein the hub takes a shape polygonal in cross-section on the outside to which an axial side of each spoke is adjacent. The invention further relates to a bicycle comprising said drive wheel configured as a rear wheel.

Abstract: The invention relates to an agricultural sprayer arm to attach a conduit spreading a good, with multiple foldable segments articulately attached to each other, the shape of at least one segment of which is determined by longitudinal beams mainly loaded by traction and diagonal braces connected thereto and mainly loaded by pressure and/or torsion, wherein the longitudinal beams are made of fiber reinforced material and the diagonal braces are made of a light alloy. The invention also relates to an agricultural sprayer comprising one such agricultural sprayer arm or two such agricultural sprayer arms.

Abstract: A rim for a vehicle comprising a tire contact to which a clincher or a tubed tire may be fastened is disclosed. The tire contact includes a core wrapped by reinforcing thread so that the core is covered by a supporting layer formed by the reinforcing thread. The tire contact is covered at least on the radial inside by the cover layer formed of reinforcing thread so that a reinforcing ring is provided between the cover layer and the tire contact. Methods of manufacturing fiber composite rims are also disclosed. A core is wrapped with a reinforcing thread to deposit a supporting layer on the core and to form a tire contact. The tire contact is arranged adjacent an aerodynamics enhancing component and a reinforcing ring. The tire contact, the aerodynamics enhancing component and the reinforcing ring are wrapped with one or more reinforcing thread(s) to form a cover layer.

Abstract: A method for the manufacturing a rim with a layer structure for a muscle-powered vehicle is disclosed. The method includes providing a first, pressure and temperature resistant mould. A first plane reinforcement fibre package consisting of at least two separate layers of reinforcement fibres is inserted into the first mould. One or several reinforcement fibre mat(s) are inserted into the first mould onto the first reinforcement fibre package. A second flat reinforcement fibre package consisting of at least two separate layers of reinforcement fibres is inserted into the first mould onto the one or several reinforcement fibre mat(s). A spacer is inserted into the first mould and the first mould is closed by means of a second, pressure and temperature-resistant mould. The layered structure is hardened and the rim may be removed from the moulds. Rims, running wheel and bicycles manufactured using the described process are also disclosed.

Abstract: An agricultural field sprayer having a boom that can be mounted on a tractive unit such as a tractor is described. The boom is composed of plural sections that are pivotal relative to each other and is adapted to be pivoted from a transport position into a working position and/or back to the transport position. Components of the boom are made from fiber-reinforced composite.

Abstract: The invention concerns an agricultural sprayer with an arm comprising multiple segments, which are pivotable relative to each other, whereby the arm is pivotable out of a transport position into an operating position and/or back into a transport position, whereby the complete arm is attachable to a drawing vehicle, such as a tractor, and pivotable around a first horizontal swiveling axis, whereby at least one of the segments of the arm is pivotable around a second swiveling axis, which is in general vertically aligned in the transport position and whereby the discrete segments comprise units, which are arranged relative to each other per segment such, that a work plane through those units is in general vertically aligned in the transport position, wherein the complete arm is pivoted out of the transport position in the operating position around the first swiveling axis, such that the work plane is generally horizontally aligned.

Abstract: The invention concerns an agricultural sprayer with an arm comprising multiple segments, which are pivotable relative to each other, whereby the arm is pivotable out of a transport position into an operating position and/or back into a transport position, whereby the complete arm is attachable to a drawing vehicle, such as a tractor, and pivotable around a first horizontal swiveling axis, whereby at least one of the segments of the arm is pivotable around a second swiveling axis, which is in general vertically aligned in the transport position and whereby the discrete segments comprise units, which are arranged relative to each other per segment such, that a work plane through those units is in general vertically aligned in the transport position, wherein the complete arm is pivoted out of the transport position in the operating position around the first swiveling axis, such that the work plane is generally horizontally aligned.

Abstract: The present invention relates to a method for producing a rim ring for a wheel rim, in particular for a wired-on wheel rim, with the following steps: providing an outer rim profile made of hardened composite fibrous material, providing a plastic shaping element, providing at least one top layer made of composite fibrous material, inserting the plastic shaping element radially within the outer rim profile, and positioning the top layer relative to the plastic shaping element and to the outer rim profile such that at least part of the top layer extends from the plastic shaping element onto the outside of the outer rim profile. The present invention further relates to a method for fastening spokes made of composite fibrous material to a rim ring. Finally, the present invention also relates to a rim ring, a wired-on wheel rim and a bicycle with wired-on wheel rims.

Abstract: The present invention relates to a method for producing a rim ring for a tire rim, in particular for a wired-on tire rim, with the following steps: providing an outer rim profile made of hardened composite fibrous material, providing a plastic shaping element, providing at least one top layer made of composite fibrous material, inserting the plastic shaping element radially within the outer rim profile, and positioning the top layer relative to the plastic shaping element and to the outer rim profile such that at least part of the top layer extends from the plastic shaping element onto the outside of the outer rim profile. The present invention further relates to a method for fastening spokes made of composite fibrous material to a rim ring. Finally, the present invention also relates to a rim ring, a wired-on tire rim and a bicycle with wired-on tire rims.