Abstract: Techniques are provided for measuring angles of rotation of a rotatable body, and, in particular, for measuring angles of rotation of a rotating member that can rotate greater than 360 degrees. One example of these techniques is multi-turn angular position sensor that includes a main gear configured to couple to and rotate, in response to rotation of a rotation member, over a main gear rotation range, a first sensor gear engaged with the main gear and configured to experience more angular rotation than the main gear in response to rotation of the main gear, and a second sensor gear engaged with the main gear and configured to experience more angular rotation than the main gear and less angular rotation than the first sensor gear in response to rotation of the main gear.

Abstract: A multi-turn angular position sensor a main gear configured to couple to and rotate, in response to rotation of a rotation member, over a main gear rotation range, a first sensor gear engaged with the main gear and configured to experience more angular rotation than the main gear in response to rotation of the main gear, and a second sensor gear engaged with the main gear and configured to experience more angular rotation than the main gear and less angular rotation than the first sensor gear in response to rotation of the main gear. The angular position sensor also includes a first angular position sensor configured to sense rotation of the first sensor gear and to generate a first output signal indicative of rotation of the first sensor gear, and a second angular position sensor configured to sense rotation of the second sensor gear and to generate a second output signal indicative of rotation of the second sensor gear.

Abstract: A throttle position sensor having a potentiometer module which fits into a connector casing for mounting on a carburetor or and air-fuel mixture control system for an internal combustion engine. The position sensor assembly is mounted such that movement of the butterfly valve and thus the throttle, acts to move the wiper element of the potentiometer in a predictable manner. The modules can be tested independently of the casing and rejected without unnecessary waste. Additionally, the same potentiometer module can be used with different connector casings. The potentiometer module includes a one piece casing having an integrally formed cantilever bearing system with two spaced bearing surfaces for rotatably mounting the rotor holding the potentiometer wipers and a "pilot diameter" boss aligned with the axis of rotation of the rotor. Longitudinal movement of the rotor within the casing is limited by position two stop members on either side of an annular ridge extending outwardly from the rotor.