ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,972, issued on April 21, was assigned to American Piledriving Equipment Inc. (Kent, Wash.).
"Variable moment vibratory systems and methods" was invented by Gerald Cors (Enumclaw, Wash.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A coupler system for a vibratory system comprising an eccentric system comprising at least one transfer gear operatively connected to at least upper and lower eccentric members, the coupler system comprising a coupler housing defining a coupler axis, at least one drive rack supported for linear movement within the coupler housing, a coupler drive system for causing linear movement of the at least one drive rack within th...