Patent ID: 6870363

Claim:
In combination, a rotating surface and a target wheel mounted on said surface; said surface being of constant dimension beneath said target wheel to fully support said target wheel along the length thereof; the target wheel comprising a cylindrical base portion, a first end portion extending radially outwardly relative to said base portion, a second end portion extending radially outwardly relative to said base portion, and at least one encoder connected to said base; said base portion being sized and shaped to frictionally fit over said surface, said base portion and said first and second end portions defining radially outwardly turned bends at first and second ends of said base portion; said second end portion defining a radially outwardly turned portion which is spaced from said surface along the length of said radially outwardly turned portion; and whereby said bends at said first and second ends of said base define circumferential lines of frictional contact between said target wheel base and said surface to increase the frictional engagement of said target wheel base about said surface to prevent axial and angular movement of said target wheel relative to said surface.