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.

A pumpjack is a drive mechanism to achieve this, consisting of a four-bar linkage as shown below. The heavy rotating counterweight is arranged so that it is falling while the pump is performing the up …

Such four-bar mechanisms are known as centric four-bar. In centric four-bar mechanisms the time ratio is unity (the crank rotation between dead-centers is 180 0) and they will have a better force …

A four-bar linkage, also known as a four-bar mechanism, is a mechanical linkage made up of four rigid bars or links joined by four joints or pivots. These joints allow for relative motion between the links, …

One of the most common mechanisms: Four rigid bodies: #1 (ground), and three moving bars #2, #3, and #4. Two fixed points: O 2 and O 4. It features one degree of freedom: moving one bar fully …

The four-bar mechanism has applications including the Watt mechanism, also known as the parallel Watt mechanism. In Watt's four-bar mechanism, the center of the coupling bar generates trajectories …

This handout will take you through the steps of designing a 4 bar linkage. A four bar linkage is used to define and constrain the motion of an object to a particular path.

Four bar linkage is a fundamental concept related to kinematics in mechanical engineering that plays a critical role in many machines and devices, from car suspensions to robotic arms. It is a mechanism …

It is composed of four binary links - the bars - connected to each others by four revolute joints. With respect to the latter fact it is also called 4R mechanism. One of the four links is fixed and called …

Jun 11, 2025 · The Four-Bar Linkage is a fundamental component in mechanical systems, used to transmit motion and forces between different parts of a machine. It consists of four rigid links …