A land grid array (LGA) interposer structure, including an electrically insulating carrier plane, and interposer groupings of different height being mounted on a first surface of said carrier plane. Each interposer possesses a hemi-toroidal configuration in transverse cross-section and is constituted...http://www.google.se/patents/US7658616?utm_source=gb-gplus-sharePatent US7658616 - Groups of land grid interposers of different heights having metal-on elastomer hemi-torus shapes providing for electrical contact with at least one component on an opposite side of an electrically insulating carrier plate mounting interposers
