Discussion(1) r Case 1 S+L<P+O Mechanism Frame Crank-rocker Ground either link adjacent to the shortest Double-crank Ground the shortest link Double-rocker Ground the link opposite the shortest *The coupler makes a full revolution Case 2 S+L>P+Q: All inversions will be trip/e-rocker no ink can fully rotate r Case 3 S+L=P+Q: At the change points, the output behavior will become indeterminate. The common used mechanisms are parallelogram and antiparallelogramDiscussion(1) Case 1 S+L<P+Q: *The coupler makes a full revolution Case 2 S+L>P+Q: All inversions will be triple-rocker, no link can fully rotate. Case 3 S+L=P+Q: At the change points, the output behavior will become indeterminate. The common used mechanisms are parallelogram and antiparallelogram. Mechanism Frame Crank-rocker Ground either link adjacent to the shortest Double-crank Ground the shortest link *Double-rocker Ground the link opposite the shortest