Patent · US Expired

Method and apparatus for directional boring under mixed conditions

US6588516B2 · kind B2 · utility

8Cited by

38References

17Claims

0Family size

Assignee

Vermeer Manufacturing Company · US

Inventors

Randy R. Runquist · Knoxville, US
Mark Van Houwelingen · Knoxville, US
James Richard Rankin · Montezuma, US
Rene Albert · Motten, DE

Key dates

Filing date	Jul 8, 2002
Grant date	Jul 8, 2003
Priority date	—
Expiry date	Jul 8, 2022

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B47/02
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A drill head for an apparatus for horizontal directional drilling. The drill head includes a device for detecting angular orientation, a holder for the device for detecting angular orientation, the device for detecting angular orientation being disposed therein, a hammer driven by a liquid and a drill bit. The holder, the hammer and the drill bit are connected head to tail along a longitudinal axis of a drill string with the holder at a proximate end of the drill head and the drill bit at a distal end of the drill head.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.