Abstract: Multicolor graphic image screen printing on basketball backboards using ultraviolet light-cured inks is disclosed. The UV inks include a cure catalyst which enables the UV inks to meet adhesion and weatherability standards for basketball backboards. The UV inks are printed using fine mesh screens which provide high resolution and require less ink to print the graphic image. Four-color process printing, including photographic printing, is possible according to the present invention.

Abstract: An assembly for drivably connecting a shaft to a bore includes a member having a bore, wherein a keyway is included in the bore having a semi-circular cross section. A shaft is provided which is configured to have a non-interference fit in the bore, and a surface of the shaft is formed with a keyway having a rectangular cross-section. A unitary component is provided, and is adapted to connect the shaft to the bore of the member and to allow driving forces to be transmitted between the shaft and the bore. The unitary component includes engagement means formed on an inner surface thereof which enables the component to be coupled to the keyway in the shaft. The unitary component also includes an integral key having a semi-circular outer surface corresponding to and adapted to engage the semi-circular keyway formed in the bore.

Abstract: A shaft 44, 144, 145 is conventionally driveably connected to a bore 46, 146 by a steel key of rectangular cross-section. Where the shaft is of smaller diameter than the bore, a slotted nylon sleeve is fitted between them and a tall steel key extends through the slot. Failure of both standard and tall keys can occur for various reasons. A unitary component 50, 162, 163 of suitable plastics material or non-ferrous metal is therefore proposed. This component essentially includes an integral key 56, 174 of curved cross-section adapted to engage in a mating keyway 176 formed in the bore. Where the shaft 44 and bore 46 are nominally of the same diameter, the component 50 consists also of an integral key 52 of rectangular cross-section adapted to engage in the conventional keyway 48 in the shaft.

Abstract: A swivel joint for interconnecting two lengths of pipe, comprises an inner annular member adapted, in use, to be connected to a first length of pipe and an outer annular member co-axial with the inner annular member and adapted, in use, to be connected to a second length of pipe, and a bearing arrangement locating the inner and outer members for relative rotary movement with respect to one another. A lubricant reservoir is connected to the bearing arrangement, and a pump drive driven by relative rotary movement between the inner and outer annular members pumps lubricant from the lubricant reservoir to the bearing arrangement. The lubricant reservoir comprises a collapsible hose, and the pump device (42) comprises system for effecting a peristaltic action in the hose as a result of relative rotary movement of the inner and outer annular members, thereby causing lubricant to be displaced from the hose towards the bearing arrangement.