Shaft minimizing ellipticalization strain error
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United States of America Patent
Stats
-
Jul 19, 2022
Grant Date -
Mar 11, 2021
app pub date -
Jan 25, 2019
filing date -
Jan 26, 2018
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A shaft characterized by its length to diameter ratio being less than about 1.75 having a drive connection at one end where the wall thickness of the shaft is selected to be thick enough to avoid ellipticalization strain error in torsional measurement of less than 5%. One specific application is for a crankset spindle that can be used to measure a cyclist right, left, and total leg torque.
First Claim
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International Classification(s)
- B62M:RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; P....
- B62J:CYCLE SADDLES OR SEATS; ACCESSORIES PECULIAR TO CY....
- G01L:MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL ....
- G06F:ELECTRIC DIGITAL DATA PROCESSING
- F16C:SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT ME....
- F16D:COUPLINGS FOR TRANSMITTING ROTATION
- 2019 Application Filing Year
- B62M Class
- 436 Applications Filed
- 329 Patents Issued To-Date
- 75.46 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B62M Class
- 0 % this patent is cited more than
- 3 Age
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