A discharge device for granular materials, with a housing having at least one inlet for the granular materials, and with a rotor that is connected to a motor, rotates about an axis of rotation and has multiple vanes and chambers located between the vanes, the granular materials being conveyable from the at least one inlet to at least one outlet when the rotor rotates. The axis of rotation of the rotor is vertical and the rotor is preferably arranged inside an essentially cylindrical wear liner.

The present invention relates to a bicycle training wheel assembly that uses uniquely, spherical wheel made of rubber or polyurethane substances of optimal consistency for this utility, as opposed to using the conventional cylindrical wheel. The foregoing properties of the said spherical wheel provide bounce and shock absorption. This invention allows the rider to obtain better balance and stability while learning to ride the bicycle. The assembly attaches to both sides of the rear wheel axle of the bicycle.

A wheel assembly includes a wheel axle, an inner wheel, and an outer wheel. The inner wheel is mounted on the wheel axle. The inner wheel is rotatable about the wheel axle. The inner wheel is rotatably retained in the outer wheel. The inner and outer wheels include a gap therebetween, and the outer wheel is rotatable eccentrically about the wheel axle.

A wheel includes a primary ring having a stepped core part and a tire formed of a urethane material as an outer surface thereof, and an auxiliary ring provided on a circumferentially-central portion of the primary ring, on which the tire is provided, in an insertion manner. The primary ring is formed of a plastic material, and the auxiliary ring is formed of a metallic material that is different from the material of the primary ring.

A caster wheel assembly includes a wheel mounted for rotation about a horizontal axis within a wheel carriage such that the wheel rotates about the horizontal axis with respect to the wheel carriage. The wheel carriage is positioned within a retention ring such that the wheel carriage can rotate about the vertical axis with respect to the retention ring. The wheel carriage also has an opening on the bottom surface such that the wheel can make contact with the ground. The horizontal axis about which the wheel rotates is offset from the vertical axis about which the wheel carriage rotates. An outer carriage may be included such that the outer carriage is positioned within the retention ring and the wheel carriage is positioned within the outer carriage. The outer carriage would be able to rotate about the vertical axis with respect to both the retention ring and the wheel carriage.

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.

A castor includes a wheel support and at least one roller mounted on the wheel support. The at least one roller has a peripheral portion provided with a hollow air chamber which is provided with a plurality of hollow air columns. One of the hollow air columns is provided with an air inlet. The at least one roller is made of soft material that is made by a blow molding operation. The soft material is initially made into a tubular blank by a blow molding machine. A gas is then filled into the soft material to blow and shape the soft material in a die at a high temperature to form the at least one roller. The at least one roller is then stripped from the die.

A castor includes a wheel support and at least one roller mounted on the wheel support. The at least one roller has a peripheral portion provided with a hollow air chamber which is provided with a plurality of hollow air columns. One of the hollow air columns is provided with an air inlet. The at least one roller is made of soft material that is made by a blow molding operation. The soft material is initially made into a tubular blank by a blow molding machine. A gas is then filled into the soft material to blow and shape the soft material in a die at a high temperature to form the at least one roller. The at least one roller is then stripped from the die.

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 non-pneumatic tire for supporting a load by working in tension. The tire can comprise a generally annular inner ring, a generally annular outer ring, and a web having a plurality of web elements. The tire can further comprise a layer or layers fabric material acting as a bonding agent to bond tire components together.