InventorAssigneeUS Classes175/122, WITH MEANS TO FEED DRIVE137/561RSYSTEMSAttorney, Agent or FirmInternational Classes E21B 7/00 E03B 1/00 Issued Patent Number:7967084
Abstract textAn 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. |