| 摘要 |
<p>An indexing arrangement (10) includes a rotor (12) ; a stator (14) spaced fr om the rotor; a rotary seal (16) located between the rotor and the stator, with the seal being rotatable with the rotor; means for urging the rotary seal in to sealing contact with the stator; ports (20, 24, 22) in the rotor, in the stator and in the rotary seal; and connecting means (26) for connecting respective ports (20) in the rotor with respective ports in the rotary seal; so that in use fluid can flow through the ports in the rotor, into the ports in the rotary seal via the connecting means, and out through the ports (24) in the stator.</p> |
