Abstract: A wheel of synthetic material and method of making same for vehicles, such as a steering wheel for motor vehicles, such as a wheel for bicycles and the like and, for example for other applications including single-track vehicles. The wheel includes a rim, a plurality of spokes, and a hub, and is made in one piece by injection molding at the hub. Between each two adjacent spokes, the rim has a wall element which extends in the circumferential direction of the rim, extends from the connection location of each spoke on the rim to the middle of the rim portion between two spokes, and is rheologically designed as a preliminary flow cross-sectional area such that preliminary flows of the synthetic material enter the wall element from both spokes and flow more quickly from the two spoke connection locations to the middle of the rim portion than the two circumferential flows of synthetic material which advance in the remaining rim walls.

Abstract: A wheel of synthetic material for bicycles and the like. The wheel includes a rim, a plurality of spokes, and a hub, and is made in one piece by means of injection molding at the hub. Between each two adjacent spokes, the rim has a wall element which extends in the circumferential direction of the rim, extends from the connection location of each spoke on the rim to the middle of the rim portion between two spokes, and is rheologically designed as a preliminary flow cross-sectional area such that preliminary flows of the synthetic material enter the wall element from both spokes and flow more quickly from the two spoke connection locations to the middle of the rim portion than the two circumferential flows of synthetic material which advance in the remaining rim walls. This prohibits the two circumferential flows in the remaining rim walls from meeting at the middle of the rim portion and forming a cold flow seam which would considerably reduce the strength of the rim at this central rim portion.

Abstract: A skate board with two wheel mounts located on one board, in which each of the wheel mounts holds an axle carrier with a roller axis for two rollers in an elastic manner. Steering movements of the roller axes are initiated by shifting the weight of the rider. At least one of the two roller axes is pivotal about a transverse axis running transverse to the longitudinal axis of the board, so that the board can be lowered relative to the roller axis by applying weight. The board can be raised relative to the roller axis, on the other hand, by a spring force upon removal of the weight. The transverse axis is rigidly connected to the board so that lowering and raising the board will not initiate steering movements of the roller axis. The board, furthermore, has a brake which acts on the rollers if the board is raised and carries no load. The brake is released by applying weight and lowering the board.