Original Publication Date: 1985-May-01
Included in the Prior Art Database: 2005-Feb-18
A wheel, having a continuous periphery, is provided with slots to enable its easy installation on an in-place shaft. Fig. 1A shows slotted wheel 10 in position to be installed on shaft 20. Slot 12 is normal to the axis of the wheel and is slightly wider than the diameter of shaft 20. Radial slot 14 is slightly narrower than the diameter of shaft 20. A second slot 14 is on the opposite hub of the wheel, displaced by 180 degrees. Wheel 10 is lowered to straddle shaft 20, as shown in Fig. 1B, and is then twisted 90 degrees counterclockwise. As wheel 10 is twisted, the hubs, split by slots 14, are forced to snap onto shaft 20, completing the installation, as shown in Fig. 1C.