In a compressor the opposite happens, the rotation of the crank pushes the piston to compress the gas in the cylinder. Depending on how the mechanism is arranged, it can perform the following ...

Consider the mechanism shown below made up of moveable links AB, BD and slider D. Link AB is rotating CCW at a constant rate. Point C is the center of rotation for BD, where point C is at the ...

The cam is the part of the mechanism that rotates. A crank can be used to turn the cam. The outer edge of the cam is in contact with a follower. As the cam rotates, it pushes the follower.