| 摘要 |
<p>TITLE OF THE INVENTION WET DRILLING CONNECTOR SEAL A positive sealing arrangement for wet system drilling apparatus is shown for use in mining operations. A ring-like elastomeric seal is provided on the inside periphery near one end of a drill section so that a tubular connector engages and compresses that ring-like seal to prevent leakage of a water-sir mixture that is being supplied from the base section of the drill string to the working end.</p> |
