Screw vent - The French Oil Mill Machinery Company
The devolatilizing vent of the present invention is useful in removing all types of volatile materials which are removable from a material being worked, including water vapor and various hydrocarbon gases, such as shown in U.S. Pat. Nos. 3,799,235, issued Mar. 26, 1974 and 3,683,511, issued Aug. 15, 1972, both assigned to The Firestone Tire ...