Refining element

Details Refining element Refining element

2004-08-20

2008-11-04

Rosenbaum, Mark (Department: 3725)

Solid material comminution or disintegration

Apparatus

Comminuting elements

C241S261300

Reexamination Certificate

active

07445174

ABSTRACT:
Refining elements are disclosed for use in the refining of fibrous material in which the refining elements include a pattern of bars and intermediate grooves between the bars. The bars extend in an arc-shaped direction outwardly over the refining element and the upper surface of the bars includes smaller grooves which form angles of from about 10° to 90° with respect to the longitudinal direction of the bars so that the smaller grooves on the bars extend substantially radially.

REFERENCES:
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patent: 4023737 (1977-05-01), Leider et al.
patent: 4090672 (1978-05-01), Ahrel
patent: 5165592 (1992-11-01), Wasikowski
patent: 5467931 (1995-11-01), Dodd
patent: 5690286 (1997-11-01), Dodd et al.
patent: 7172148 (2007-02-01), Cassidy
patent: 53469 (1978-10-01), None

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