Patent · US Active

Dual rod directional drilling system

US10711520B2 · kind B2 · utility

5Cited by

47References

26Claims

0Family size

Assignee

Vermeer Manufacturing Company · US

Inventors

Michael D. Langenfeld · Pella, US
Andrew J. Kreimeyer · Knoxville, US
Tyler J. Dorin · Pella, US

Key dates

Filing date	May 1, 2018
Grant date	Jul 14, 2020
Priority date	—
Expiry date	Jul 13, 2038

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B19/16
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A drill head includes a drive shaft that has an uphole end and a downhole end. The downhole end includes drive features that are torque transmitting and radial load bearing. The drill head also includes a coupling that includes drive features that are torque transmitting and radial load bearing. The drive features of the coupling are sized and shaped to mate with the drive features of the drive shaft. The coupling includes an axial fluid flow passage and a radial fluid flow passage. The radial fluid flow passage is in communication with the axial fluid passage, and fluid flow is permitted between the drive features of the drive shaft and the drive features of the coupling.

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