Solid material comminution or disintegration – Apparatus – Stationary comminuting surface or material bed
Reexamination Certificate
2009-10-07
2011-10-25
Rosenbaum, Mark (Department: 3725)
Solid material comminution or disintegration
Apparatus
Stationary comminuting surface or material bed
C241S285300
Reexamination Certificate
active
08042756
ABSTRACT:
A vertical shaft impact crusher includes a rotor that rotates about a substantially vertical axis for accelerating a flow of material to be crushed. The crusher further includes a housing, a feed tube, and a feeding chamber. The housing includes a circumferential impact wall section against which the accelerated flow of material may be crushed. The feed tube is for vertically feeding a flow of material into the rotor to be crushed. The feeding chamber includes a feeding chamber side wall and is for vertically feeding a flow of material into the feed tube. A first door is provided for opening and closing an aperture in the feeding chamber side wall. The feed tube is removable from the feeding chamber via the first aperture.
REFERENCES:
patent: 4098466 (1978-07-01), MacElvain et al.
patent: 4151959 (1979-05-01), Deister
patent: 4923131 (1990-05-01), Rossouw et al.
patent: 5083714 (1992-01-01), Vendelin et al.
patent: WO 2004/020103 (2004-03-01), None
Dallimore Rowan
Fensome George
Kjaerran Knut
Drinker Biddle & Reath LLP
Rosenbaum Mark
Sandvik Intellectual Property AB
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