The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 2022
Filed:
Jan. 25, 2019
Applicant:
Michael Grassi, Columbus, OH (US);
Inventor:
Michael Grassi, Columbus, OH (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/30 (2006.01); B62J 45/411 (2020.01); B62J 45/41 (2020.01); B62M 3/00 (2006.01); B62M 3/16 (2006.01); F16C 3/02 (2006.01); F16D 3/06 (2006.01); G01L 3/10 (2006.01); B62J 45/421 (2020.01);
U.S. Cl.
CPC ...
B62J 45/411 (2020.02); B62J 45/41 (2020.02); B62J 45/421 (2020.02); B62M 3/00 (2013.01); B62M 3/16 (2013.01); F16C 3/02 (2013.01); F16C 3/026 (2013.01); F16D 3/06 (2013.01); F16D 3/065 (2013.01); G01L 3/108 (2013.01); F16C 2202/02 (2013.01); F16C 2204/20 (2013.01); F16C 2204/26 (2013.01); F16C 2204/42 (2013.01); F16C 2204/60 (2013.01); F16C 2206/02 (2013.01); F16C 2326/28 (2013.01);
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.