Bicycle crank

JP1831375SActive Publication Date: 2026-07-13
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Patent Information

Application Number
JP2026001531D
Authority / Receiving Office
JP · JP
Patent Type
Designs
Filing Date
2026-01-28
Publication Date
2026-07-13
Estimated Expiration
2051-01-28

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Abstract

The article relating to the present design is used by connecting one end to the rotating shaft of a bicycle chain gear and attaching a pedal to the other end, as shown in the reference diagram illustrating the mounting state. The material is spring steel, formed into a plate shape, with the thickness gradually decreasing from the end connected to the chain gear to the end to which the pedal is attached, so that the thickness of the end to which the pedal is attached is half that of the end on the chain gear side. When a load is applied to the pedal to rotate the chain gear, the curvature of the curved spring steel changes, as shown in the front view and plan view with reduced curvature.
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