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
Apparatus and method for evaluating an activity distribution, and irradiation system
Method for evaluating performance characteristics of dental curing lights
Combination photovoltaic and wind power generation installation
Image processing apparatus, image display apparatus, and image processing method
Fast base station switching method and system, and hierarchical zone-based fast handoff approach
Methods and apparatus for determining a phase error in signals
Decoding and presentation time stamps for MPEG-4 advanced video coding
  Randomly Featured Patents
System and method for improving clarity of audio systems
Lamp dimmer
Apparatus and method for in situ detection of areas of cardiac electrical activity
Apparatus and method for detecting embedded watermarks
Sloped roof and head
Force field separator
Temperature measuring, algae cleaning and feeding systems for aquariums
Arrangement for preventing excess pressure in the housing of shut-off valves
Surface-type illumination device and liquid crystal display
Mechanism and process to transform a grammar-derived intermediate form to an object-oriented configuration database