ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,477,999, issued on Nov. 25, was assigned to Techtronic Cordless GP (Anderson, S.C.).

"Power lopper attachment" was invented by Adam D'Angelo (Beaufort, S.C.), Caleb Cassidy (Myrtle Beach, S.C.), Drew Girshovich (Rock Hill, S.C.) and Nicholas Park (Clemson, S.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lopper or lopper head attachment includes a primary gear, a secondary gear, a ratchet gear, an engagement flag, a dampened lag bolt, and a cutting blade. The secondary gear is enmeshed with the primary gear. The secondary gear defines a lag groove radially offset from the secondary axis. The ratchet gear is rotatable about a secondary axis separate...