The opercular mouth-opening mechanism of largemouth bass functions as a 3D four-bar linkage with three degrees of freedom | Journal of Experimental Biology | The Company of Biologists
Linkages - Roy Mech
A four-bar linkage model and the associated points in the proposed... | Download Scientific Diagram
Four-Bar Linkage and Its Three Possible Motions - YouTube
Static balancing of a four-bar linkage and its cognates - ScienceDirect
Marvelous Mechanisms: The Ubiquitous Four Bar Linkage | Hackaday