Cycle cranks, cycles, methods of measuring a cycle crank angular position
AssigneeBf1Systems Limited
InventorsJohn Bailey, Gavin Mark Skipper, Kevin James Ireland, James Ravi Shingleton
Life of this patent
Estimating the term…
Abstract
A cycle crank includes a first portion for attachment to a cycle and a second portion spaced from the first portion for attachment to a pedal; wherein the crank includes a sensor for determining, in use, a value representative of a force applied to the crank; an angular rate sensor for determining, in use, the angular rated of rotation of the crank; and a processor for determining the angular position of the crank from the determined angular rate of rotation and associating the position with its corresponding value representative of a force applied to the crank.
Claims4
A cycle crank comprising:
- at least one crank arm, each crank arm comprising:
- a sensor for determining, in use, a value representative of a force applied to said crank arm during a revolution of said crank arm;
- and
- a wireless transmitter;
- wherein said at least one crank arm is configured to operate in a first, low speed mode of operation in a first frequency range, in a second, medium speed mode of operation in a second frequency range, and in a third, high speed mode of operation in a third frequency range;
- in said second mode of operation the wireless transmitter of said crank arm communicates at a higher rate of transmission than in the first mode of operation;
- and
- in the third mode of operation the wireless transmitter of said crank arm communicates at a higher rate of transmission than in the first and second modes of operation.
Dependencies are inferred from the claim text.