US Patent 7285950 Position measuring system and pneumatic cylinder

A position measuring system is proposed, comprising: a transmitter, a first displacement transducer, to which the transmitter is contactlessly coupled with a coupling strength which is dependent on the relative position between the first displacement transducer and the transmitter, a second displacement transducer, to which the transmitter is contactlessly coupled with location-dependent coupling strength, and a fixing device for fixing the first displacement transducer and the second displacement transducer in relation to each other, so that the measuring range of the position measuring system extends over the first displacement transducer and the second displacement transducer.