Patent · US Active

Impregnated drill bits with integrated reamers

US8991524B2 · kind B2 · utility

7Cited by

11References

25Claims

0Family size

Assignee

Longyear TM, Inc. · US

Inventors

Cody A. Pearce · Midvale, US
Christian M. Lambert · Draper, US
Michael D. Rupp · Murray, US

Key dates

Filing date	Jul 6, 2011
Grant date	Mar 31, 2015
Priority date	—
Expiry date	Nov 29, 2033

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B17/1092
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

Drilling tools include a bit crown and an integrated reamer. The bit crown and the integrated reamer can be configured with approximately equal drilling lives. The bit crown can be impregnated with abrasive cutting media and include one or more external flutes. The integrated reamer can be positioned at the base the bit crown and include one or more channels that align with one or more of the outer flutes. The channels can taper such that they increase in width as they extend away from the bit crown.

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