Patent ID: 6994441

Claim:
An actuator mechanism for movement along a support membrane structure, said actuator mechanism comprising: a ferromagnetic plug with a first coefficient of thermal expansion and a first coefficient of friction, said ferromagnetic plug being positioned on a surface of said support membrane structure and magnetically coupled to said support membrane structure; a center band with a third coefficient of friction, said center band being positioned on the surface of said support membrane structure and fixedly attached to said ferromagnetic plug, said center band encircling said ferromagnetic plug; an actuator material region with a second coefficient of thermal expansion, said actuator material region being positioned above the surface of said support membrane structure and adjacent to said center band, said actuator material region being separated from said ferromagnetic plug by said center band; and an outer band with a second coefficient of friction fixedly attached to said actuator material region, said outer band being positioned on the surface of said support membrane structure and adjacent to said actuator material region and said outer band being magnetically coupled to said support membrane structure.