Jerry Fuh’s scientific contributions

... Combining in the same housing not rotors in the form of eights, and so-called augers of mirror type, having defined them as a rotor leading and driven, it also modernized the injection window, transferring its main part from the side surface of the shell to the end. With the rotation of the two screws, they suck in the working medium, then there is compression in a closed volume and displacement into the injection cavity [3]. The test showed that the efficiency of the device is quite high, compared to the compressor of the Roots brothers and works smoothly, excluding pulsation and pressure jumps. ...

Reference:

Using Computer Modeling Methods to Develop the Screw Single-Rotary Compressor Working Bodies Profiles