US Patent Issued to Caterpillar on April 21 for "Down-the-hole hammer with ported piston and flow control valve" (Indian Inventor)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,069, issued on April 21, was assigned to Caterpillar Inc. (Peoria, Ill.).

"Down-the-hole hammer with ported piston and flow control valve" was invented by Koushik Kabiraj (Jharkhand, India).

According to the abstract* released by the U.S. Patent & Trademark Office: "A down-the-hole hammer includes a barrel having a longitudinal axis and defining a proximal chamber and a distal chamber, a piston slidable within the barrel between the proximal chamber and the distal chamber, and a flow control valve including a valve member slidable within the barrel along the longitudinal axis to control airflow through the piston. In a first position of the valve member, the valve member allows ...