Link 1 is connected by screw pair A to the fixed link and by sliding pair B to link 2 which, in turn, is connected by screw pair C to the fixed link. When link 1 is turned through the angle ϕ₁, the displacement of link 2 along axis x-x is s₂=h_C(ϕ₁/(2π)) where h_C is the pitch of the thread in screw pair C. It is taken with a plus sign for right-hand thread and with a minus sign for left-hand thread. The angles of rotation ϕ₁ and ϕ₂ of links 1 and 2 are equal.
$2203$LS,3L$