US 11,986,979 B2
Double arm mixer extruder
Jeffrey R. Hoffmann, Schaumburg, IL (US)
Assigned to AARON ENGINEERED PROCESS EQUIPMENT, INC., Wood Dale, IL (US)
Filed by AARON ENGINEERED PROCESS EQUIPMENT, INC., Wood Dale, IL (US)
Filed on Sep. 24, 2021, as Appl. No. 17/484,465.
Prior Publication US 2023/0098369 A1, Mar. 30, 2023
Int. Cl. B29B 7/46 (2006.01); B01F 27/1143 (2022.01); B01F 27/2123 (2022.01); B29B 7/48 (2006.01)
CPC B29B 7/465 (2013.01) [B01F 27/1143 (2022.01); B01F 27/2123 (2022.01); B29B 7/488 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A mixer comprising:
a vessel with an opening, a first side wall, a second side wall spaced from and parallel to the first side wall, each side wall terminating at a bottom, a first end wall and a second end wall spaced from and parallel to the first end wall, with the second end wall having a recess;
a pair of parallel spaced apart shafts, each shaft extending from the first end wall to the second end wall and each shaft being provided with at least one mixing blade; and
a discharge screw centrally located between the first and second side wall and disposed in a cavity provided in the bottom, the discharge screw has (a) a shaft with a first end that extends through the first end wall and (b) a driven end opposite the first end of the shaft, with the driven end being connected to a motor shaft for rotating the discharge screw in at least one direction; the driven end having a recessed portion that extends into the recess of the second end wall of the vessel;
wherein the recessed portion extends into the recess of the second end wall of the vessel a distance that is less than a thickness of the second end wall.