Methods of forming stationary elements of rotatable cutting elements for use on earth-boring tools and stationary elements formed using such methods
US10619421B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2017 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Jan 3, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods of forming a stationary housing of a rotatable cutting element for use on an earth-boring tool may include forming one or more annular recesses extending around an outer surface of a first sleeve, inserting the first sleeve within a second sleeve, joining the first sleeve with the second sleeve, and removing a portion of material from an inner surface of the first sleeve to expose the annular recesses. Methods may also include forming a first portion and a second portion of a sleeve, forming an annular recess around an entire perimeter of an inner surface of each of the first portion and the second portion of the sleeve proximate a longitudinal end thereof, and bonding the longitudinal ends of the first portion and the second portion of the sleeve along an interface therebetween. Stationary housings formed from such methods are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.