Chain wheel for chain gear in chain carriage of mini-track vehicle for grapes cultivation, has tooth forming under-cut with respect to tooth base plane defined by tooth base surface

摘要

The wheel (1) has teeth (2) that are arranged from each other and spaced over its periphery. Each tooth has a flank (6) running between a tooth base (4) and a tooth head (5). The flank driving in an operation of the wheel has a flat surface (A) in a base flank area connected to the base. A plane of the flank defined by the flat surface exhibits an inner angle larger than 90 degrees with respect to a tooth base surface. The tooth forms an under-cut with respect to a tooth base plane defined by the tooth base surface, where the wheel is made of metal, plastic and composite. An independent claim is also included for a chain gear including a chain.