Mixer having a centrally disposed helical or anchor agitator...

Details Mixer having a centrally disposed helical or anchor agitator... Mixer having a centrally disposed helical or anchor agitator...

2011-01-18

2011-01-18

Cooley, Charles E (Department: 1774)

Agitating

Rubber or heavy plastic working

Stationary mixing chamber

C366S298000, C366S299000, C366S300000, C366S301000, C366S320000, C422S229000

Reexamination Certificate

active

07871193

ABSTRACT:
A mixer having improved axial and radial mixing which retains good mixing time even during large viscosity changes, comprising a housing with at least one helical or anchor agitator located centrally in the housing in combination with at least one eccentrically arranged screw or blade agitator, preferably in mutual engagement, the combination of a helical agitator and a screw agitator enabling a much shorter mixing time as compared to a mixer having only a helical agitator without a screw agitator.

REFERENCES:
patent: 3476522 (1969-11-01), Stovall
patent: 3482823 (1969-12-01), Rechtin
patent: 4198376 (1980-04-01), Fournel et al.
patent: 5549384 (1996-08-01), Reynolds
patent: 6863432 (2005-03-01), Schuchardt et al.
patent: 2003/0147304 (2003-08-01), Schuchardt et al.
patent: 2007/0237024 (2007-10-01), Brod et al.
patent: 4117773 (1992-12-01), None
patent: 10248333 (2003-12-01), None
patent: 2076675 (1981-12-01), None
patent: 1111807 (1984-09-01), None
patent: WO 2006007967 (2006-01-01), None
Fluid Mixing and Gas Dispersion in Agitated Tanks, by Gary B. Tatterson, Ph.D., McGraw-Hill, Inc.: 1991, p. 325.

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