Billiard chalk block for billiard cue, has notch formed as reservoir for excessive chalk that leads inwardly and preventing partial layer thickness camber of chalk on sour orange shape

摘要

The block (1) has a spherical recess (2) that adapts a shape of sour orange when utilizing a chalk and permits a lateral elusion of excessive chalk. A notch (3) is formed in the form of a reservoir for the excessive chalk that leads inwardly and prevents a partial layer thickness camber of the chalk on the sour orange shape. A geometry, a position and a number of notches are varied for optimization of abrasion and application characteristics.