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
Sign language keyboard and sign language searching apparatus using the same
Current collector for lead acid battery
Adjustable high precision surveying device
Adjustable box extender
Efficient forward ranking in a search engine
Model matching for trace link generation
Semiconductor device and manufacturing method
  Randomly Featured Patents
35 MM camera
Multifunctional drawing and writing instrument
Speaker bezel/retainer
Heucherella plant named `Alabama Sunrise`
Integral torquer for mass measurement system
Driving wheel slip control system for vehicles
Weight change indicating apparatus
Fluid control system for hydraulically operated transmissions and master clutch
Providing supplemental semantics to a transactional queue manager
Flat and thin LED-based luminary