Patent ID: 6899055

Claim:
A teatcup liner intended to be mounted in a teatcup shell, which has a first end and a second end, in such a manner that it in a mounted state extends through the teatcup shell and forms an inner space arranged to receive a teat and an outer space between the teatcup shell and the teatcup liner, wherein the teatcup liner includes an opening, which is intended to permit the introducing of said teat into said inner space and which, in the mounted state, is arranged to be located at the first end, and wherein the teatcup liner includes a grip area, which is arranged to be gripped by a grip portion of the teatcup shell in such a manner that the grip area is surrounded by and abuts the grip portion in the mounted state, wherein the grip area, seen in a cross-section, has a non-circular shape, wherein the teatcup liner includes a connection portion, which is arranged to connect the teatcup liner to the first end of the teatcup shell in the mounted state and which includes an annular recess, and wherein the connection portion includes means arranged to define at the most two possible rotary positions for the teatcup liner in relation to the teatcup shell in the mounted state, wherein said rotary position delivery means includes a bridge of material, which extends in the annular recess and is arranged to engage a corresponding recess extending from the first end of the teatcup shell.