| 摘要 |
<p>A fastening ring (1) connects the teat (2) to the bottle (3), which is marked on its outer surface with indicators of the liquid flow rate out of the bottle. The teat is secured to the fastening ring by interlocking of recessed and projecting portions of the teat's end flange (20) with complementary relief formations (13) of the interior of the ring. The relative positions of the teat and ring are controlled by engagement of a projection (7) in the teat end flange with a hole (4) in the flat end portion of the ring. In the correct relative position, marks (9) formed in the teat surface corresponding to marks (5) in the cylindrical skirt (14) of the ring.</p> |
