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US 10,538,287 B2Granted
Bicycle crank arm
AssigneeShimano Inc.
InventorsTooru Iwai, Tetsu Nonoshita, Toyoshi Yoshida
Life of this patent
Estimating the term…
Abstract
A bicycle crank arm is basically provided that includes a first structural member and a second structural member attached to the first structural member. The first structural member is made of a first material including a non-metallic material. The second structural member is made of a second material that is different from the first material.
Claims23
A bicycle crank arm comprising:
- a first structural member made of a first material including a non-metallic material;
- a second structural member attached to the first structural member, and the second structural member being made of a second material that is different from the first material;
- a reinforcement member configured to reinforce one of the first structural member or the second structural member;
- and
- a sprocket teeth mounting portion having an outer peripheral edge, the outer peripheral edge of the sprocket teeth mounting portion having an annular shape,
- the reinforcement member being disposed adjacent to the outer peripheral edge of the sprocket teeth mounting portion and extending continuously along an entirety of the outer peripheral edge of the sprocket teeth mounting portion, the reinforcement member being a separate member from the sprocket teeth mounting portion.
3 more elements
A bicycle crank arm comprising:
- a first structural member made of a first material;
- a second structural member made of a second material;
- a reinforcement member configured to reinforce the first structural member, the reinforcement member being a separate member from the first structural member, the reinforcement member being made of a third material that is different from at least one of the first material and the second material;
- and
- a sprocket teeth mounting portion having an outer peripheral edge, the outer peripheral edge of the sprocket teeth mounting portion having an annular shape,
- the reinforcement member being disposed adjacent to the outer peripheral edge of the sprocket teeth mounting portion and extending continuously along an entirety of the outer peripheral edge of the sprocket teeth mounting portion, the reinforcement member being a separate member from the sprocket teeth mounting portion.
3 more elements
Dependencies are inferred from the claim text.