Teat rubber cup

Abstract

A teat rubber cup comprising a head member substantially rotationally symmetric with a longitudinal axis, with an aperture for insertion of the teat, a retaining edge to engage over a teat cup sleeve, and a suction stub joined to the head member, the end of the head member opposite the teat insertion aperture merging into the retaining edge. The wall of the head member is stiffened in a region located between the teat insertion aperture and the transition to the retaining edge, and the upper end of the suction stub merges into this stiffened part of the head member. The part of the teat rubber cup head located between the stiffened part and the retaining edge is made at least partly elastic. During the suction phase a compressive force acts on the section of the head member located between the stiffened part of the head member and the retaining edge, the force endeavouring to move that section towards the outside of the suction stub. An upward movement of the teat cup sleeve then takes place, while in the relief phase a slight downward movement of the sleeve takes place relative to the teat.

Dependencies are inferred from the claim text.