Gear wheel, gear drive and fitting
The wheel (10) has a body (12) comprising a radial outer side (14), and a tooth system (16) comprising tooth (18), at the outer side. The body comprises a cross-section, which is perpendicular to a rotation axis (20) of the wheel. The cross-section comprises a polygon with corners and sides. A side surface of the body covers a toothing section (16') of the tooth system and corresponds to the sides of the polygon. An edge of the body forms a corner tooth (16'') of the tooth system, where the edge of the body corresponds to the corners of the polygon. Independent claims are also included for the following: (1) an actuating unit for a window or door, comprising a gear wheel (2) a fitting for a window e.g. double-winged window or dibble-free window and/or door e.g. double-winged door or dibble-free door, comprising a gear wheel (3) a window e.g. double-winged window or dibble-free window and/or door e.g. double-winged door or dibble-free door, comprising a fitting.