Resources Contact Us Home
Underground boring and pipe installation

Image Number 4 for United States Patent #6109831.

A utility power unit (10) for underground drilling and pipe laying operations comprises a stationary frame portion (12), a movable frame portion (14) capable of performing sliding movement relative to the stationary frame portion (12) and hydraulic cylinders (44) between the stationary and the movable frame portions (12, 14) for effecting the relative movement. The movable frame portion (14) includes an attachment (36) for removably attaching a tool connecting member (38) thereto and a further attachment (40) for removably attaching a rotary drive unit (52) thereto. The invention also provides a method of directional boring along an intended underground path (62) comprising the steps of providing a machine pit (60) at a location along the intended path (62) and drilling a bore along the intended path (62) by means of directional drilling apparatus (10) which includes a stem (30) provided with a drill (68) at a forward end thereof. The bore is started from an inside wall (64) of the pit (60) and at a location beneath ground surface.

  Recently Added Patents
Resuming piecewise calibration of a real-time-clock unit after a measured offset that begins at the next calibration period
Communication system including relay station and data frame for the communication system
Functional component compensation reconfiguration system and method
Vehicle lamp component
Adaptive control for uncertain nonlinear multi-input multi-output systems
Managing device functionality during predetermined conditions
  Randomly Featured Patents
Fast path packet destination mechanism for network mobility via secure PKI channel
Multispectral imaging method and apparatus
Method and apparatus for testing electronic components within horizontal and vertical boundary lines of a wafer
Method and apparatus for transferring digital data between circuits
Semiconductor encapsulating epoxy resin compositions and semiconductor devices encapsulated therewith
Position determination device
Rolling fire door with delayed closing mechanism
Discovering and monitoring process executions
Lamp holder and lamp holder attachment structure
Retail compatible detection of CVD grown diamond