A land grid array (LGA) interposer structure, including an electrically insulating carrier plane, and at least one interposer mounted on a first surface of said carrier plane. The interposer possesses a hemi-toroidal configuration in transverse cross-section and is constituted of a dielectric elastomeric...http://www.google.com/patents/US7488182?utm_source=gb-gplus-sharePatent US7488182 - Land grid array (LGA) interposer structure providing for electrical contacts on opposite sides of a carrier plane
