Patent · US Active

Rolling cutter stability

US10774596B2 · kind B2 · utility

6Cited by

37References

20Claims

0Family size

Assignee

SMITH INTERNATIONAL, INC. · US

Inventors

Youhe Zhang · Spring, US
Chen Chen · Houston, US
Yuri Burhan · Spring, US
Balasubramanian Durairajan · Sugar Land, US
Sandeep Tammineni · Dhahran, SA

Key dates

Filing date	Sep 21, 2016
Grant date	Sep 15, 2020
Priority date	—
Expiry date	Sep 21, 2036

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B10/62
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A cutting element includes a cutting end extending a depth from a cutting face to an interface surface opposite from the cutting face, and a spindle, the spindle axially separated from the cutting end by a transition region. The spindle has a spindle diameter measured between a spindle side surface, which is less than a cutting end diameter. A guide length, measured from a point of transition to the transition region to a retention feature, is longer than 75% of a total length of the spindle.

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