Solid material comminution or disintegration – Apparatus – Cooperating comminuting surfaces
Reexamination Certificate
2006-02-28
2006-02-28
Rosenbaum, Mark (Department: 3725)
Solid material comminution or disintegration
Apparatus
Cooperating comminuting surfaces
C241S294000, C241S300000
Reexamination Certificate
active
07004413
ABSTRACT:
A grinder tooth for use with a rotatable breaker ring part of a grinder, the breaker ring has a breaker head protruding radially from the ring outer peripheral surface for carrying the grinder tooth. The grinder tooth includes a blade holder, a shank extending from the blade holder and a blade releasably attached to the blade holder. The blade defines at least two grinding edges. The blade and holder are configured and sized so that the blade and holder peripheral surfaces are substantially in register with each other when the blade is attached to the holder. The blade and the holder are also configured and sized so that either one of the at least two grinding edges may be positioned radially outwardly by rotating the grinder tooth about the shank longitudinal axis allowing either one of the at least two grinding edges to be selectively used for grinding.
REFERENCES:
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patent: 3642214 (1972-02-01), Blackwell, Jr.
patent: 4162770 (1979-07-01), Lewis
patent: 5060875 (1991-10-01), McBride
patent: 5100070 (1992-03-01), Montgomery
patent: 5524839 (1996-06-01), Schade et al.
patent: 5873534 (1999-02-01), Shinn
patent: 6517020 (2003-02-01), Smith
patent: 6520440 (2003-02-01), Ragnarsson
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