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US 8,881,608 B2Granted
Bicycle crank arm
AssigneeShimano Inc.
InventorsToshio Tetsuka, Etsuyoshi Watarai
Life of this patent
Estimating the term…
Abstract
A bicycle crank arm comprises a crank body, a sensor support member and a power sensing device. The crank body includes a crank axle mounting portion and a pedal mounting portion. The sensor support member is disposed in a cavity of the crank body and attached to the crank body. The power sensing device is supported on the sensor support member.
Claims19
A bicycle crank arm comprising:
- a crank body including a crank axle mounting portion and a pedal mounting portion;
- a sensor support member disposed in a cavity of the crank body and attached to the crank body, the sensor support member being configured to deform upon application of a pedaling force being applied to the pedal mounting portion;
- and
- a power sensing device supported on the sensor support member.
1 more element
A bicycle crank arm comprising:
- a crank body including a crank axle mounting portion and a pedal mounting portion,
- a sensor support member disposed in a cavity of the crank body and attached to the crank body;
- and
- a power sensing device supported on the sensor support member,
- an end surface of one of the crank axle mounting portion and the pedal mounting portion including an access bore that communicates with the cavity of the support body, the access bore being dimensioned with respect to the sensor support member such that the sensor support member is installed into the cavity via the access bore.
2 more elements
A bicycle crank arm comprising:
- a crank body including a crank axle mounting portion and a pedal mounting portion;
- a sensor support member disposed in a cavity of the crank body and attached to the crank body, the sensor support member including a first portion in contact with the crank body at a first location and a second portion in contact with the crank body at a second location that longitudinally spaced apart from the first location with respect to a longitudinal axis of the crank body;
- and
- a power sensing device supported on the sensor support member.
1 more element
A bicycle crank arm comprising:
- a crank body including a crank axle mounting portion and a pedal mounting portion;
- a sensor support member disposed in a cavity of the crank body and attached to the crank body;
- and
- a power sensing device supported on the sensor support member, the power sensing device including a plurality of sensor elements disposed at different angular locations with respect to a longitudinal axis of the crank body.
1 more element
Dependencies are inferred from the claim text.