Measuring and indicating device for a snow skier

摘要

A measuring and indicating device for a snow skier including a rotatable roller attachable to the rear of a ski and adapted to rotate in rolling contact with the underlying snow utilizes an indicator unit positionable remote of the roller such as upon the wrist of the skier. The device further includes elements supported adjacent the roller for sensing the rotation thereof and generating signals corresponding to the sensed rotation. The indicator unit includes a calculator for receiving the signals generated by the sensing elements and calculating a predetermined characteristic, such as speed or distance, of travel by the snow skier corresponding to the received signals. The indicator unit further includes a display for displaying the calculated characteristic in the form of a numerical value. The device further includes a connecting mechanism interposed between the roller and the ski permitting pivotal movement of the roller between a raised and lowered condition in relation to the rear of the ski and a spring for biasing the roller from the raised condition to the lowered condition so that if the rear end of the ski were to be raised an appreciable distance above the surface of the snow, the roller is maintained in rolling engagement with the underlying snow for measurement calculations. The device is particularly well-suited for accurately measuring a predetermined characteristic of travel even if the ski is tipped upon one side or the other.