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US Patent Application 20100059281 - EXTERNAL WATER DELIVERY SYSTEM FOR ROCK DRILLS

Application 20100059281 Filed on January 21, 2009. Published on March 11, 2010

Inventor

Assignee

US Classes

175/122, WITH MEANS TO FEED DRIVE137/561RSYSTEMS

Attorney, Agent or Firm

International Classes

E21B 7/00
E03B 1/00

Issued Patent Number:

7967084


Abstract text


An external water delivery system includes a water box front head, a collet configured to interface with the water box front head, a polymer sleeve configured to be positioned between the water box front head and the collet, a shank, and at least one seal positioned within the sleeve. The sleeve and seals are configured to provide a water chamber when coupled to the shank. An inner of the sleeve provides a bearing surface for the shank.

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