Patent ID: 7024849

Claim:
A chain lock for high-strength steel chains, comprising two identical lock parts joined together in a symmetric arrangement with one another, in a longitudinal direction; each lock part comprising: a longitudinal stay having arc segments at both ends, two coupling elements that are configured complementary to one another and being connected to each of the two arc segments of each lock part, one of said elements being configured as a locking stay that extends in a longitudinal direction of the lock part and the other of said elements being configured as a stay accommodation, wherein the locking stay of one lock part engages in the stay accommodation of the other lock part, said locking stay having a coupling surface formed by a face end of the stay and resting against a complementary coupling surface of the corresponding stay accommodation, in a joining direction, wherein the coupling surfaces comprise a coupling surface segment having a defined width, said segment having substantially no curvature in the joining direction.