Patent ID: 7578080

Claim:
Cutting tooth for a cutting wheel of a trench wall cutter, the cutting wheel having a holder, the cutting tooth comprising: a dedendum for reception in the holder of the cutting wheel, the dedendum having a top, a longitudinal axis, and an advance direction approximately parallel to the longitudinal axis, at least one main cutting element located at the top of the dedendum, the at least one main cutting element having a main cutting direction perpendicular to the longitudinal axis of the dedendum and having at least one wedge-shaped cutting edge, wherein the cutting edge extends substantially perpendicular to the main cutting direction and roughly parallel to the longitudinal axis of the dedendum, at least one reaming element located laterally on the dedendum, the at least one reaming element having a pin-type cutting edge and being configured for widening the working cross-section of the main cutting element, wherein with reference to the main cutting direction, the at least one reaming element projects laterally over the main cutting element and over the dedendum, and at least one further cutting element located laterally on the dedendum, on the same side as the at least one reaming element, and below the at least one reaming element, when seen in the advance direction of the dedendum, the at least one further cutting element having a pin-type cutting edge; wherein the at least one main cutting element is arranged in a leading manner relative to the at least one reaming element in the main cutting direction on the dedendum; wherein: the at least one main cutting element has at least one longitudinal cutting edge at right angles to the main cutting direction; the cutting tooth further comprises two secondary cutting edges connected in V-shaped manner to the at least one longitudinal cutting edge; and when considered in the main cutting direction, the longitudinal cutting edge is laterally displaced relative to a median plane of the dedendum in a direction towards the reaming element.