Four-bar linkage

In the study of mechanisms, a four-bar linkage, also called a four-bar, is the simplest closed-chain movable linkage. It consists of four bodies, called bars or links, connected in a loop by four joints.

Source: Wikipedia — Four-bar linkage (CC BY-SA 4.0)

Four-bar linkage

In the study of mechanisms, a four-bar linkage, also called a four-bar, is the simplest closed-chain movable linkage. It consists of four bodies, called bars or links, connected in a loop by four joints.

Source: Wikipedia "Four-bar linkage" · CC BY-SA 4.0

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