US Patent 11840377 Self-closing valve with indentations in valve head contour

A self-closing dispensing valve is made of an elastic material and includes a valve head with a dispensing orifice, a circular peripheral retaining flange spaced apart from the valve head in an axial direction, and a connecting sleeve integrally connected with the valve head on one end and the retaining flange on another end. The dispensing orifice is formed by at least three slits in the valve head, where the slits converge at a centre of the valve head and are angularly evenly distributed around the centre of the valve head. The valve head includes a number of lobes, where in each of the lobes at least one of the slits is formed. Each of the lobes has a tip region on a radial outer end of the lobe, where the tip regions of the respective lobes lie approximately on an imaginary circle.