| 摘要 |
<p>An aerator for introducing air into a liquid flowing under pressure through a spout, the aerator being partially or totally concealed by the spout and being substitutable-in dimensions and flow characteristics-with a conventional, unconcealed aerator having standard male threading. The concealed aerator is couplable to a spout having female threading at the most downstream portion thereof and provides enhanced sealing between the concealed aerator and spout. Specifically, for a concealed aerator including two concentric tubular members with an air space therebetween, the present invention teaches the forming of a seal between the upstream surfaces of both tubular members against an annular shelf defined within the spout.</p> |
