Device to determine travel data of transport apparati such as roller skates

摘要

The appliance has a mileage recorder on at least one roller, the measurement roller (5). A correction system (30) corrects the distance travelled measured by the mileage recorder (4) to cover the occasions when the measurement roller contact with the ground is broken. The correction system can include a tilt meter, tilt switch or a pressure switch, the latter fitted to a shoe connected to the propelling equipment. A reed switch can be provided to measure the revolutions of the measurement roller this working in conjunction with a magnet mounted eccentrically on the roller. The magnet can be a neodmium or aluminium nickel cobalt alloy permanent magnet