Resources Contact Us Home
Pipe replacement method and rotary impact mechanism for pipe bursting

Image Number 7 for United States Patent #6755593.

An impactor for use with a directional boring machine having a drill string connectable to the impactor for pulling the impactor through an existing pipeline uses rotation of the drill string to drive an internal striker. The internal striker delivers impacts in the pulling direction to an impactor housing as the impactor housing tows a replacement pipe behind it. The impactor housing is free to move axially in response to impacts from the striker over a limited distance in the pulling direction independently of the replacement pipe and drill string.

  Recently Added Patents
Sub-LUN input/output profiling for SSD devices
Expandable mobile device
Position pointer, variable capacitor and inputting apparatus
Techniques for determining optimized local repair paths
Visual physician office systems and methods
Proximity search methods using tiles to represent geographical zones
Scalable encoding apparatus, scalable decoding apparatus, scalable encoding method, scalable decoding method, communication terminal apparatus, and base station apparatus
  Randomly Featured Patents
Honeycomb body with an end-side brazing zone, exhaust-gas treatment component and motor vehicle having a honeycomb body and method for producing a honeycomb body
Method and apparatus for printing patterns on substrates
Remotely reprogrammable communications adapter for providing access to an electronic device
Lightweight heliostat system
Recording medium
Shutter time control circuit
Bathing enclosure
Mobile terminal and corresponding method for transmitting new position information to counterpart terminal
Apparatus for controlling toner replenishment in electrostatographic printer
Method and apparatus for suppressing noise in a communication system