Pneumatic / Hydraulic Gripper

grabcad

If my ideology is correct then this mechanism should provide good strength to pick large sized objects & less strength to pick smaller sized objects.1) For wider/larger objects (require good holding force)Mechanism provide small output displacement for large piston displacements1) For smaller/fragile objects (require less holding force)Mechanism provide large output displacement for smaller piston displacementsAnother advantage of this mechanism is cylinder could be hidden under the robotic arm used to mount the gripper (Arm to be made hollow)