Abstract:
A feed wheel includes a hub and a discontinuous tread removably fitted about the hub. At leading and trailing ends of the discontinuous tread are mateable non-planar female and male surfaces which interfit with one another and tend to interlock the tread ends together. The tread has locking lugs formed under leading and trailing ends and an intermediate segment of the tread which fit into holes configured and located in the hub complimentarily to the locking lugs. The holes and locking lugs are oriented relative to one another so as to enable the tread to be retained about the hub with the tread ends interlocked together during operation of the feed wheel.
Abstract:
The invention relates to a run-flat support body for run-flat vehicle wheels. Said support body is typically embodied as a shell-shaped, metallic annular body (3) having an undulated supporting annular surface. The invention relates to a simple, effective method for producing one such annular body (3), according to which a rectangular blank (6) which is cut out of a strip of sheet metal is bent along the longitudinal side to form a ring and the open ends of the ring are interconnected by a material connection. The annular blank (7) thus produced is provided with the desired profile according to the pressure-rolling method, is provided with connecting elements (9), and cut open between the same.
Abstract:
A process for manufacturing a wheel of a roller skate with a hub and a wheel body fixed around the hub is disclosed. The wheel body has a soft inner portion which is mounted around the hub and a hard outer portion which is fixed around the soft inner portion. The process includes: connecting two ends of a rubber tube in order to form a molding loop; forming a radial hole in the molding loop; charging a foamable rubber material into the molding loop via the radial hole; allowing the foamable rubber material to foam and fill the molding loop in order to form the inner portion of the wheel body; mounting the molding loop around an outer periphery of the hub; and injection molding a rubber material in a mold in order to form the outer portion of the wheel body around the molding loop and the outer periphery of the hub and in order to melt the molding loop and interconnect the foamable rubber material and the outer portion.
Abstract:
A wheel for use in a high performance environment, such as racing, is provided with structure to increase the ability of the wheel to withstand fatigue stresses. The structure comprises an area of increased thickness provided on the rim of the wheel, located adjacent the connection of mounting structure to the inner surface of the rim. The area of increased thickness comprises a crimp formed in the material of the rim providing a recess opening onto the outer surface of the rim, with the recess being substantially filled with weld material. The wheel so constructed has a rim which is reinforced and capable of withstanding high local stresses exerted on the rim during operation by the mounting structure, yet which allows flexibility of the rim. The ability of the wheel to withstand fatigue stresses is dramatically enhanced, providing improved safety and durability without detracting from wheel performance.
Abstract:
An equipment for the manufacture of ring members for vehicle wheels starting from metal plate strip cut lengths, which mainly comprises a cylinder bending station formed by a calender, a welding station formed by two discontinuous type welding machines with rollers (which carry out a so-called "ecrease" welding in which the overall lap joint thickness is reduced plastically to about the thickness of one of the lapped end edges), each having a grasping device, intended for grasping the workpiece, movable between an extracted position, in which it extends into the bending station to grasp the workpiece lying therein, and a retracted position, and a rolling station which comprises a pair of rollers, one of which is driven; the welding station is arranged to move, during the welding step, between a first position, in which the first welding machine faces the bending station, and a second position, in which it faces the subsequent rolling station, and the two welding machines alternate in the two mentioned positions; the rolling station is intended to work on the ring members delivered by the welding station while these ring members are still hot in consequence of the welding they have been subjected to.