US Patent Issued to NATIONAL OILWELL VARCO on July 14 for "Seal assembly for progressive cavity pump" (British Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,544, issued on July 14, was assigned to NATIONAL OILWELL VARCO LP (Houston).

"Seal assembly for progressive cavity pump" was invented by Michael Davies (Stockport, Great Britain) and Chris Griffiths (Northwich, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A seal assembly for sealing a power input shaft of a progressive cavity pump can include a seal housing arranged around the power input shaft, the seal housing can include a mounted portion, mounted to the progressive cavity pump, a removable portion, removably coupled to the mounted portion, which can be configured to apply a compression force to a seal within the seal assembly, an...