Measuring apparatus for pedal-crank assembly
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United States of America Patent
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Jun 25, 1991
Grant Date -
N/A
app pub date -
Jul 17, 1989
filing date -
Jul 17, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus measures output parameters including torque, work, power, rpm and time for selected rotations of the user of a power-using device having a pedal-crank assembly. Torque vs. angular position values are input from rotating strain gauges and angular position sensors to a programmed microprocessor which stores and processes this data. An approximate-integration algorithm produces a value for work produced over a selected rotation. This work value is further divided by the time interval to produce a value for the instantaneous power being produced. With appropriate sensors, many forms of data for both right and left crank arms can be displayed and/or stored separately.
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