Patent ID: 8528756

Claim:
A closure sealing system for a leakproof baby feeding bottle comprising: a screw ring ( 90 ); a drinking teat ( 100 ); a lower closure ring ( 30 ) comprising: a substantially cylindrical lower sidewall ( 31 ) having an internal thread ( 33 ) for fastening onto an external thread ( 14 ) of the bottle ( 10 ); and, a lower partition wall ( 37 ) having at least one lower hole ( 40 , 41 ); an upper closure ring ( 60 ) comprising: a substantially cylindrical upper sidewall ( 61 ) having an external thread ( 63 ) removably receiving the screw ring ( 90 ), thereby fastening the drinking teat ( 100 ) to an upper edge of the upper sidewall ( 61 ); and, an upper partition wall ( 70 ) having at least one upper hole; locking elements ( 48 , 49 , 50 , 51 , 66 , 67 ) rotatably and releasably locking together the lower closure ring ( 30 ) to the upper closure ring ( 60 ); and, a sealing arrangement comprising: a circular lip seal ( 42 ) made of a soft elastic material and concentric to the lower sidewall ( 31 ), the lip seal ( 42 ) comprising at least one axially oriented sealing lip ( 43 , 44 ) disposed on said lower partition wall ( 37 ); at least one circular seal geometry ( 75 ) engaging the lip seal ( 42 ) and disposed on said upper partition wall ( 70 ), concentric to the upper sidewall ( 61 ); and, wherein rotating the upper closure ring relative to the lower closure ring aligns the at least one upper hole with the at least one lower hole to enable dispensing of contents from the bottle.