ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,747, issued on July 28.
"Spindle for drilling head" was invented by Pasqualino Comacchio (Riese Pio X, Italy), Patrizio Comacchio (Riese Pio X, Italy) and Renzo Comacchio (Riese Pio X, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "A spindle for drilling heads has a substantially tubular or annular shape, with a clearance that is arranged so that it is coaxial with a drilling axis, and includes a gripping member or jaws configured to grip a drilling rod, and an actuator for selectively opening or closing the gripping member or jaws and rotating around the drilling axis integrally with the gripping member or jaws. The spindle also includes a re...