US Patent Issued to PGI HOLDING on Oct. 6 for "Device for generating an axial load in a drill string assembly" (Russian Inventors)

ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,753,660, issued on Oct. 6, was assigned to PGI HOLDING Ltd. (Dubai, United Arab Emirates).

"Device for generating an axial load in a drill string assembly" was invented by Ilia Liagov (Ufa, Russia), Alexander Liagov (Ufa, Russia) and Marina Kachemayeva (Ufa, Russia).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to drilling equipment. A device for generating an axial load in a drill string assembly with a bottomhole motor powered by drilling fluid comprises a hollow cylinder barrel and a spring-loaded flow-through plunger rod with a key, the rod and key forming a subassembly. The hollow cylinder barrel is provided with a sealing coll...