US Patent Issued to Geopier Foundation on Jan. 27 for "Apparatuses for constructing displacement aggregate piers" (North Carolina Inventors)

ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,867, issued on Jan. 27, was assigned to Geopier Foundation Co. Inc. (Davidson, N.C.).

"Apparatuses for constructing displacement aggregate piers" was invented by John Verdin (Davidson, N.C.) and Kord J. Wissmann (Davidson, N.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Apparatuses for constructing displacement aggregate piers are disclosed. In one example, a mandrel is provided comprising a tamper head that has cutting teeth on the leading edge thereof. In another example, hydrojet nozzles are provided within one or more of the cutting teeth of the tamper head. In yet another example, the mandrel comprises grout tubes (or grout injection lines)...