Title: Screw thickener

Abstract: A screw thickener to be used for dewatering fibrous materials and being provided with a stuffing means at the discharge end. Said screw thickener having a hydrostatic superpressure of at least 10 kPa and said stuffing means being actuated by pulling means.

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Inventors: Wallen, Lennart E. O. (Stockholm, SW)

Application Number: 458439
Filing Date: 1974-04-05
Publication_date: 1976-03-09
Assignee: Lennart Wallen & Co AB (Stockholm, SW)
Primary Class(es): 162/232 100/117, 100/147, 162/18, 210/414
Other Classes:
US Patent Ref:

2771361	Nov, 1956	Birdseye et al.	162/56.
3092338	Jun, 1963	Reinhall	100/117.
3098785	Jul, 1963	Meiler	162/56.
3154007	Oct, 1964	Schaub et al.	100/147.

Other Refs: 167,916

Mar, 1954	AU

Primary Examiner: Bashore, S. Leon
Assistant Examiner: Caroff, Marc L.
Attorney: Kenyon & Kenyon Reilly Carr & Chapin