| 摘要 |
A milk liner assembly ( 1 ) comprises a milk liner ( 5 ) seal ably located in an outer shell ( 3 ) and defining with the outer shell ( 3 ) a pulsating vacuum chamber ( 23 ). The milk liner ( 5 ) comprises a sleeve ( 8 ) and a teat engaging flange ( 25 ) which together define a teat receiving cavity ( 11 ). A teat accommodating opening ( 26 ) through the teat engaging flange ( 25 ) accommodates a teat into the teat receiving cavity ( 11 ). A strengthening ring ( 28 ) integrally formed with the sleeve ( 8 ) is located on the sleeve ( 8 ) and extends around the sleeve ( 8 ) adjacent the teat engaging flange ( 25 ) for minimising excessive radial inward contraction of the sleeve ( 8 ), and in turn excessive radial inward contraction of the teat engaging flange ( 25 ) onto the teat so that even if the teat engaging flange ( 25 ) were to engage the cricoid fold, milk flow through the cricoid fold would not be inhibited by the gripping pressure exerted the teat engaging flange ( 25 ) on the cricoid fold. The strengthening ring ( 28 ) extends axially from the sleeve ( 8 ), and terminates in a distal abutment surface ( 30 ) for abutting the udder of the animal for in turn spacing the teat engaging flange ( 25 ) from the udder and from the cricoid fold.
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