Patent ID: 8179130

Claim:
A magnetic revolution counter for unambiguous determination of a pre-specifiable number of revolutions to be determined for a rotating element, comprising: a plurality of sensor elements provided in a number depending on a number of revolutions to be measured for the element to be detected the sensor elements being formed by closed loops that are covered by magnetic domains and that guide them, said loops including at least one ferromagnetic and one soft magnetic layer, said loops including tapered protuberances oriented into the interior of the loop, a number of protuberances provided per loop being defined and varying from one of said loops to another of said loops; a magnet system, a magnetic field of which permits the detection of all said sensor elements, and electrical contact arrangements that permit changes in electrical resistance of pre-specifiable loop segments to be determined as resistance values after magnetic domains have changed location due to the effect of the outer rotating magnetic field of the magnet system in the pre-specified loop segments, said resistance values being suppliable to an evaluation unit for the purpose of correlating the number of revolutions of the rotating element.