US Patent No. 10,363,562

APPARATUS TO REDUCE SIZE OF MATERIAL


Patent No. 10,363,562
Issue Date July 30, 2019
Title Apparatus To Reduce Size Of Material
Inventorship Rony Callens, Niort (FR)
Eric Schroeder, Athus (BE)
Assignee

Claim of US Patent No. 10,363,562

1. An apparatus to reduce size of a light, dry, fibrous material comprisinga ring element arranged around an axis and configured to rotate about the axis, the ring element including a plurality of tool modules detachably coupled to the ring element around an inner circumference of the ring element,
an impeller mounted for rotation about the axis and spaced radially inward of the ring element to form a shearing area between the ring element and the impeller, the impeller including a plurality of tool modules detachably coupled to the impeller around an outer circumference of the impeller, and
identical size reduction tools detachably connected to the tool modules of the ring element and tool modules of the impeller, each of the size reduction tools (i) including a tangential leg extending primarily along a tangent plane relative to inner circumference of the ring element and the outer circumference of the impeller and facing the shearing area and (ii) a radial leg extending from the tangential leg radially away from the shearing area relative to the axis to form a L-shape,
wherein each of the tangential legs is sized to have an arc length along the tangent plane that is greater than 3° (i) of the inner circumference of the ring element to which it is coupled or (ii) of the outer circumference of the impeller to which it is coupled, and
wherein each of the tangential legs is sized to have an arc length along the tangent plane less than 18° (i) of the inner circumference of the ring element to which it is coupled or (ii) of the outer circumference of the impeller to which it is coupled.