An arrangement for limiting rotation, the arrangement including a base structure; a drive member rotatable relative to the base structure and having a drive feature; a stopping member having at least one driven feature, wherein the stopping member is arranged to be intermittently driven relative to the base structure between a plurality of discrete positions by a continuous rotation of the drive member and by cooperation between the drive feature and at least one driven feature, wherein the stopping member in a first end discrete position is arranged to limit rotation of the drive member in a first end position of a rotation range of the drive member; and a holding mechanism arranged to hold the stopping member in each discrete position, the holding mechanism being at least partly provided in the base structure.

A swivel castor, having a housing which can be pivoted into a rolling direction via pivot means and two wheels rotatably mounted on the housing on a horizontal wheel axle, wherein the pivot means are arranged in front of the wheel axle, contrary to the rolling direction, and having a braking device designed to be adjustable between a braking position, in which the braking device exerts a braking force on at least one wheel, and a free-rolling position, in which the braking device releases the wheels. A brake pedal generating the braking force is pivotably mounted on the housing via a pedal axle, which extends parallel to the wheel axle and arranged between the wheels, and, in the braking position, at least one brake shoe arranged on the brake pedal exerts a braking force parallel to the wheel axle directly on one side of at least one wheel.

A tool for working in fields includes a first flange and a second flange which mount one on the other, forming a wheel body. The first flange includes a central portion, a generally annular peripheral portion and arms which connect the central portion and the peripheral portion to each other. The second flange is homologous to the first flange. In the assembled state, the wheel body has a rim which is formed together by the peripheral portion of the first flange and the homologous peripheral portion of the second flange and a hub which is formed by the central portion of the first flange. The central portion of the second flange receives the hub which is formed by the central portion of the first flange.

A tool for use in preloading a bearing includes a plurality of arms pivotable relative to each other and a pin extending from each arm of a plurality of arms. The pin is configured to engage an opening of a plurality of openings in a retaining ring. A resilient member biases the plurality of arms away from each other. A first arm of the plurality of arms includes a cavity. A second arm of the plurality of arms is received in the cavity such that an extending portion of the second arm extends outside the cavity and the second arm is moveable in the cavity.

A hub or wheel assembly includes a retaining element, biasing element, and hand-maneuverable release mechanism. The housing includes an axle bore configured to receive an axle and a pin sleeve including a first end in fluid communication with the axle bore, a second end, and a conduit between the first end and the second end. The retaining element is within the conduit and is configured to operatively engage a groove in an axle. The biasing element is within the conduit and is configured to bias the retaining element towards the axle bore. The hand-maneuverable release mechanism is configured to displace the retaining element away from the axle bore.

An omni-directional wheel for a pool vacuum head includes a first frame and a second substantially identical frame, each frame having a hub rotating around a common axis, lower supports extending radially from the hub, risers extending from the hub along the common axis, and upper supports individually coupled to the risers, the upper supports extending radially from the common axis. Rollers coupled to the first frame and the second frame, are radially spaced from the common axis on each frame. The rollers rotate normal to the common axis to impart omni-directional movement. When the first frame and the second frame are interlocked, the risers on the first frame engage the hub on the second frame, and the lower supports on the first frame engaging the upper supports on the second frame, maintaining the rollers in a staggered arrangement around the wheel.

Carbon fiber bicycle wheels are formed from parts cut from carbon fiber cloth and then joined together to form a rim, sidewalls, spokes, flanges and a center tunnel on which the flanges are mounted. The parts are then assembled, bonded together, and cured to form a wheel. During assembly, the spokes and the wheel are placed in tension by moving the flanges outwardly on the center tunnel after assembly and then bonding them in place to stiffen and strengthen the wheel. The spokes of the drive side of the rear wheel are specially shaped to accommodate torque transfer forces generated by pedaling.

The present invention relates to a bicycle rim structure for easier installation of tape, which includes a rim body and a tape, wherein the tape is a strip wound around an outer side of the rim body, an engagement structure is provided to engage the two end taps overlapped each other, so that the installation of the tape become convenient and quick, and the tape may effectively protect an inner tube to avoid the inner tube being punctured and extend useful life of bicycles. At least a lightening hole is further set on the rim body, and at least a LED set in a corresponding position of the lightening hole on the tape to achieve a light warning effect. By the above composition, the purpose of easier installation of tape and enhancing efficiency in the use may be achieved for product promotion.

A center cap is provided for a motor vehicle wheel. That center cap includes a disc-shaped body having a plurality of radially arrayed mounting projections for engaging in a plurality of cooperating slots in the wheel. Further, a motor vehicle wheel is provided. That motor vehicle wheel includes a body incorporating a wheel hub having a central opening defined within a boundary wall and a center cap received and held in the central opening. The center cap includes a plurality of radially arrayed mounting projections while the body includes a matching plurality of slots and tapering channels sized and shaped to receive the plurality of radially arrayed mounting projections.

A structurally supported tire includes a ground contacting annular tread portion; a shear band, and a connected spoke disk connected to the shear band. The connected spoke disk has two or more circumferential spokes joined together by a connecting web, wherein the spring rate of the connected spoke disk is greater than the spring rate of the shear band.