Agitating – Rubber or heavy plastic working – Stirrer is through-pass screw conveyor
Patent
1986-12-01
1988-06-21
Petrakes, John
Agitating
Rubber or heavy plastic working
Stirrer is through-pass screw conveyor
366 75, 366 82, 366 97, 366297, 425204, 425209, B29B 748
Patent
active
047521350
ABSTRACT:
A mixer having an elongate barrel with an interior wall defining a mixing chamber, at least a pair of shafts extending axially within the barrel driven in the same direction of rotation and at the same speed of rotation, and mixing elements on each of the shafts. Radially opposite paddles are on each of the shafts, each comprising hub portions and wing portions radially spaced from the hub portions. The wing portions extend axially to overlie the hub portions and each wing portion has a radially inner surface generating the configuration of the radially inner surface of a wing portion on the radially adjacent paddle and further has a radially outer surface generating hub portions of the radially adjacent paddle, and the wall of the chamber.
REFERENCES:
patent: 2670188 (1954-02-01), Erdmenger
patent: 3195868 (1965-07-01), Loomans et al.
patent: 3347528 (1967-10-01), List et al.
patent: 3407438 (1968-10-01), Selbach
patent: 3490750 (1970-01-01), Brennan, Jr.
patent: 3719350 (1973-03-01), Loomans
patent: 4236833 (1980-12-01), Blach
patent: 4299499 (1981-11-01), Buchheit
patent: 4650338 (1987-03-01), List et al.
Baker Perkins Inc.
Petrakes John
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