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Bicycle crank assembly

  • US 10,000,253 B1
  • Filed: 11/25/2016
  • Issued: 06/19/2018
  • Est. Priority Date: 11/25/2016
  • Status: Active Grant
First Claim
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1. A crank arm fixing ring comprising:

  • a cylindrical mounting portion including an external thread configured to screw into a crankshaft, the cylindrical mounting portion having a first end and a second end; and

    a contact portion including at least one tool engagement protrusion extending axially from the second end of the cylindrical mounting portion and extending radially outwardly with respect to the second end of the cylindrical mounting portion, the at least one tool engagement protrusion being configured to contact a crank arm upon attachment of the crank arm with the crank arm fixing ring, the contact portion including at least one cutout extending axially and radially outwardly from the second end of the cylindrical mounting portion and configured to receive a transmission line extending through the cylindrical mounting portion.

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