| 摘要 |
<p>A fluid distributor apparatus includes a body having distribution ports; a spool adapted for controlling the distribution ports and mounted slidingly in a first sliding seat obtained in the body and communicating with the distribution ports; a copying-member mounted slidingly and sealed in a second seat obtained in the spool; and a supply system for a controlled supply of the fluid to the second seat, so that the copying-member slides in a controlled way. The supply system includes also a chamber containing the fluid and communicating with said the seat, and a pushing device of the fluid mounted slidingly and sealed in the chamber.</p> |
