PDC insert featuring side spiral wear pads
US5499688A · kind A · utility
89Cited by
15References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1994 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Oct 17, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/81
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present disclosure sets forth various forms of inserts for operating as elements in bearing drill bits and similar devices. A single insert is formed with an external side face of cylindrical construction. One or more strips of hardened materials such as diamond or other hard material are provided along the side face. At the end face, the insert incorporates exposed tungsten carbide, diamond or other hard material. A PDC layer is optionally placed over the end face. The PDC layer has the form of a covering terminating at a radius of curvature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.