Lap counter
First Claim
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1. An automatic lap counting device comprising:
- means for attaching said device to a user,means for detecting a change of direction of magnetic flux caused by the user'"'"'s change of direction, relative to magnetic lines of force in the earth'"'"'s field;
means for producing a pulse corresponding to said change in direction of magnetic flux,means for counting said pulses, andmeans for displaying the counted pulses, the counted pulses correlating proportionally to the number of laps traversed.
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Abstract
An automatic lap counting device for use by swimmers and runners, for example, which depends upon the change in the magnetic line of force of the North/South magnetic field for determining the laps.
14 Citations
6 Claims
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1. An automatic lap counting device comprising:
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means for attaching said device to a user, means for detecting a change of direction of magnetic flux caused by the user'"'"'s change of direction, relative to magnetic lines of force in the earth'"'"'s field; means for producing a pulse corresponding to said change in direction of magnetic flux, means for counting said pulses, and means for displaying the counted pulses, the counted pulses correlating proportionally to the number of laps traversed. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification