Patent ID: 8054069

Claim:
An apparatus for providing an indication of rotational position of a shaft on an axis by causing parameter change upon rotation of the shaft, the apparatus including: a resilient, serpentine-shaped middle portion for extending around the shaft; a first end portion located at one end of the middle portion; and a second end portion at another end of the middle portion, the second end portion for location adjacent to the first end portion to permit securing of the first and second ends together subsequent to the middle portion being resiliently extended around the shaft; the serpentine-shaped middle portion being sized to be taut on the shaft when the first and second end portions are secured together and being shaped to have a plurality of undulations, the undulations providing a plurality of event members each having at least one characteristic that causes a change of a parameter that can be sensed by a sensor when the event member rotates past the sensor during rotation of the shaft and the apparatus located thereon relative to the sensor.