What is sarrus linkage?

Sarrus linkage is a four-bar linkage mechanism that was invented by French mathematician and engineer Pierre Frédéric Sarrus in 1853. It consists of four equal-length bars, arranged in a rhombus shape and connected by four revolute joints.

The Sarrus linkage is a planar mechanism that converts the rotary motion of one bar into the linear motion of another bar. It is used in various applications such as folding machines, robotics, and packaging equipment.

One of the unique features of the Sarrus linkage is that it can be used to move a load back and forth in a straight line, without any inclination or deviation. In addition, it has a compact design and can be easily integrated into a variety of machines and systems.

However, the Sarrus linkage has some drawbacks such as a limited range of motion and a tendency to bind or lock up under certain conditions. Therefore, it is often used in combination with other mechanisms to overcome these limitations.