US Patent 7118300 Shaft coupling

In a shaft coupling having a pair of complementally shaped, detachably joinable coupling sleeve halves (11, 12) which can be clamped together by means of clamping elements to form a split coupling sleeve provided with at least one seat (14) for a first shaft member (A1) which is to be non-rotatably connected with a second shaft member (A2, A2′) so that the first and second shaft members are aligned. The sleeve halves include retaining elements for positively locking the first shaft member (A1) against rotational movement relative to the coupling sleeve, wherein the retaining elements include a plurality of elongate force transmitting elements (16D) in the seat (14, 15)