Patent ID: 8087602
Filing Date: 2012-01-03
Classification: B02C

Abstract:
1. An apparatus, comprising: a pestle, the pestle comprising: a mortar, the mortar comprising: wherein: a surface of the interior inverted frustum-shaped wall, a surface of the interior bowl, and a surface of the female apex form a mortar internal profile; the mortar internal wall surface comprises elements chosen from the group consisting of flutes and ribs; the mortar bowl surface comprises elements chosen from the group consisting of flutes and ribs; the mortar internal profile and the pestle external profile are substantially similar; when the pestle rests within the mortar with the male apex nesting within the female apex, the pestle external profile aligns with the mortar internal profile; and a locus of an axis of the pestle describes a cone when the pestle is rotated through a circular locus, the cone angle being about 40 degrees.