| 摘要 |
<p>A pick assembly (100) comprising a pick tool (200), a pick holder (300) and a rotatable drive means (400); in which the pick holder is attached to the rotatable drive means and the pick tool comprises a base (220) and a strike element (210) capable of being attached to the base, the strike element comprising a strike tip (212) defining a strike tip axis (213) and the base capable of being attached to the pick holder; the pick holder and pick tool being configured in relation to the drive means operative to the strike tip axis being oriented to within a strike angle of at most 5 degrees with a strike plane on which the strike tip will travel when driven by the drive means.</p> |
