ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,215,758, issued on Feb. 4, was assigned to Hylestad Solutions AS (Rysstad, Norway).

"Shackle lock and shackle comprising said shackle lock" was invented by Kjetil Bjorgum (Kristiansand, Norway).

According to the abstract* released by the U.S. Patent & Trademark Office: "A shackle lock for positioning on a shackle body, the shackle lock has a housing, at least one locking body and a sleeve which is displaceable in an axial direction of the housing. The housing is adapted for connection to the shackle body and is arranged to house a first end of a shackle pin. The at least one locking body is arranged to engage with a locking groove at the first end of the shackle pin. The sleeve, in a ...