Patent · US Active

Underground drilling apparatus

US8939237B2 · kind B2 · utility

2Cited by

27References

25Claims

0Family size

Assignee

Vermeer Manufacturing Company · US

Inventors

Randy R. Runquist · Knoxville, US
Keith A. Hoelting · Adel, US

Key dates

Filing date	Sep 28, 2011
Grant date	Jan 27, 2015
Priority date	—
Expiry date	Sep 26, 2033

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B3/00
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A drilling apparatus is adapted for connection to a drill string such that the drill string rotates the drilling apparatus in a rotational cutting motion. The drilling apparatus includes a sonde housing having a distal end and a proximal end. The sonde housing includes a top platform positioned adjacent the distal end of the sonde housing and further includes a tongue positioned on the top platform. The drilling apparatus further includes a rotary cutting tool mounted to the distal end of the sonde housing.

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