Patent Number: 6,296,461

Title: Plural screw positive displacement machines

Abstract: Helical intermeshing main and gate rotors (1, 2) are mounted for rotation about their axes in respective intersecting bores in a housing. The profiles of the rotors as seen in cross section are generated by the same rack formation. The high pressure flanks of the lobes of the main rotor (1) and of the grooves of the gate rotor (2) are both generated by a preferably cycloidal portion (GHA) of the rack R.

Inventors: Stosic; Nikola Rudi (Barnet, GB)

Assignee: City University

International Classification: F04C 18/08 (20060101); F04C 018/00 ()

Expiration Date: 10/02/2018