Idler roller
AssigneeHorst Reinhold Wagner, Trustee, H&L Wagner Family Trust
InventorHorst R. Wagner
Life of this patent
Estimating the term…
Abstract
An idler roller consists of a roller body which comprises a plastic core having a bore to accommodate an idler shaft and a shell of polyurethane located around the core to provide a tubular load-bearing wall. Bearing assemblies are located within the roller body at each end thereof for receiving the idler shaft. A channel-shaped metallic insert is embedded in the shell, the insert spiralling around the whole length of the core. An electrically conductive clip or the like connects the metallic insert to a bearing assembly to drain any electrostatic charge formed on the surface of the polyurethane shell away from the shell via the bearing assembly to the idler shaft.
Claims11
An idler roller comprising a roller body which comprises a core having a bore to accommodate an idler shaft and a shell of a plastic material located around the core to provide a tubular load-bearing wall, bearing assemblies located within the roller body at a first end and a second end thereof for receiving the idler shaft, a metallic insert embedded in the shell, the insert spiralling around the core for substantially its whole length, and electrically conductive means connecting the insert to at least one of the bearing assemblies, the insert and the electrically conductive means being adapted to drain any electrostatic charge formed on the surface of the shell away from the shell via the bearing assembly to the idler shaft.
Dependencies are inferred from the claim text.