3.2 Variation of revolute four- bar mechanism r Transformation techniques or rules that can be applied r1. Replacing a revolute pair with a sliding pair r2. Taking different links as the frame r3. Enlarge a revolute pair r4. Interchanging quide-bar and sliding block3.2 Variation of revolute four-bar mechanism Transformation techniques or rules that can be applied 1. Replacing a revolute pair with a sliding pair 2. Taking different links as the frame 3. Enlarge a revolute pair 4. Interchanging guide-bar and sliding block