Shaft minimizing ellipticalization strain error

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United States of America Patent

PATENT NO 11390346
APP PUB NO 20210070392A1
SERIAL NO

16966447

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
GRASSI MICHAELCOLUMBUS OH

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Grassi, Michael Columbus, US 33 227

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