Patent · US Active

Downhole tool leg retention methods and apparatus

US8302709B2 · kind B2 · utility

16Cited by

2References

29Claims

0Family size

Assignee

Sandvik Intellectual Property AB · SE

Inventors

Amol Bhome · Sugar Land, US
Robert H. Slaughter, Jr. · Ponca City, US

Key dates

Filing date	Jun 22, 2009
Grant date	Nov 6, 2012
Priority date	—
Expiry date	Nov 13, 2030

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B10/28
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A back reamer includes a drive stem configured to support a main reamer body, the main reamer body including a plurality of receptacles, and a plurality of cutting leg assemblies in positive locking engagement with the plurality of receptacles to restrict radial movement of the cutting leg assemblies.

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