US Patent 6920729 Composite wall tie

An insulated load bearing building wall structure comprising a plurality of spaced-apart stud members, each stud member comprising an exterior bar member, an interior bar member, and a plurality of wall ties connected there between. Interstitial blocks comprising a generally self-supporting insulating material are disposed between adjacent pairs of stud members. A surface coating material is disposed along the exterior and interior faces of the wall structure and in contact with the interstitial blocks. The wall ties each comprise a composite material that is resistant to heat transfer, thereby reducing the amount of heat transferred between the interior and exterior surfaces of the wall structure.