US Patent Issued to Southwest Petroleum University on Sept. 30 for "Independent double-negative-pressure shale shaker" (Chinese Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,427,452, issued on Sept. 30, was assigned to Southwest Petroleum University (Chengdu, China).

"Independent double-negative-pressure shale shaker" was invented by Yongjun Hou (Chengdu, China), Duyu Hou (Chengdu, China), Mingjun Du (Chengdu, China), Pan Fang (Chengdu, China) and Yuwen Wang (Chengdu, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is an independent double-negative-pressure shale shaker, and belongs to the technical field of petroleum drilling solid control. The independent double-negative-pressure shale shaker comprises a base, a fluid discharge device, an inclination angle adjustment mechanism, a screening device, an excit...