Patent ID: 7699139

Claim:
A surround for supporting a diaphragm used to create acoustic waves, comprising: a rib section extending away from the diaphragm; and a membrane section that is supported by the rib section, the membrane section having a thickness in a direction substantially normal to opposing top and bottom surfaces of the membrane section which is substantially thinner than a thickness of the rib section in a direction substantially normal to opposing top and bottom surfaces of the rib section, the top surface of the rib section being distinguishable from the top surface of the membrane section, the bottom surface of the rib section being distinguishable from the bottom surface of the membrane section, wherein a restoring force returning the diaphragm to a home position is contributed to more due to deformation of the rib section than to deformation of the membrane section, wherein the rib section comprises an elastomer, the membrane section and the diaphragm being made of materials which differ from each other.