Resources Contact Us Home
Tap hole drill for steelmaking vessel

Image Number 8 for United States Patent #5735647.

A drilling apparatus for drilling a worn and/or damaged tap hole refractory liner sleeve from a tap hole nozzle of an oxygen blown steelmaking vessel, the apparatus including an elongated, hollow boom structure with an elongated drill shaft rotatably disposed within the boom structure, motor means for rotating the drill shaft and moving it in both directions within the boom structure, and a clamp means at the outer end of the boom structure adapted to attach the outer end of the boom structure to the tap hole nozzle in an accurate, axially aligned position. A drill bit for use with the above drilling apparatus comprises a plurality of conventional rock drill bits attached to a base plate equally spaced in a pair of concentric circular arrangement around an axis of the base plate.

  Recently Added Patents
Adjustable draw bar for trailer hitches
Methods and systems for providing a business repository
Methods and apparatus for low power out-of-band communications
Vacuum cleaner filter adapter ring
Automatic setup of reflector instances
Ink composition, ink for inkjet recording and ink set using the ink
Method of isolating human neuroepithelial precursor cells from human fetal tissue
  Randomly Featured Patents
Resilient attachable tool cleaning apparatus
Operator control interface mounting mechanism
Method for manufacturing a spark plug with glaze coating
User-programmable voice notification device for security alarm systems
Method of designing integrated circuit that accounts for device aging
Process for producing an electrographics roller
Sealing member
Hair pick
Radio equipment based on AFC system with temperature detection and method of automatic frequency control