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
Television with a stand
Luminescent substrate for liciferase
Terminal and method of controlling the same
Method for spore detection
Semiconductor device and method for manufacturing the same
Semiconductor device having a multilevel interconnect structure and method for fabricating the same
  Randomly Featured Patents
Sensor with glass seal
Tuning system and method in broadcast signal receiver
True roll putter
Electrical connector having retention system for mounting onto a printed circuit board
3-Amino-piperidine derivatives and methods of manufacture
Teaching aid
Logic level converting circuit
Magnetic bearing device of a rotor shaft against a stator with rotor disc elements, which engage inside one another, and stator disc elements
Resonant EAS marker with sideband generator
Amino alcohol derivative, addition salt thereof, and immunosuppressant