Patent ID: 7420462

Claim:
An air spring assembly comprising: a first end member; a second end member spaced from said first end member; a flexible spring wall supported between said first and second end members and at least partially forming a fluid chamber therebetween; a first transceiver supported on said first end member, said first transceiver including a first antenna operative to transmit a first electromagnetic wave and a second antenna operative to receive a second electromagnetic wave; and, a second transceiver supported on said second end member at a distance from said first transceiver, said second transceiver including a first antenna operative to receive said first electromagnetic wave, a second antenna operative to transmit said second electromagnetic wave, a processing device in electrical communication between said first and second antennae, said processing device receiving an electrical signal having a relation to said distance from said first antenna of said second transceiver and modulating a characteristic of said second electromagnetic wave in relation to said electrical signal, and a sensor in electrical communication with said processing device, said sensor operative to output a sensor signal to said processing device indicative of an input acting on one of said second transceiver and said second end member.