Tapered thread configuration with improved durability
US8991490B2 · kind B2 · utility
4Cited by
12References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2011 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Aug 24, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L2201/40
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Underground drilling operation often requires connecting a drill tool (e.g., drill bit, backreamer, etc.) to a drill string. It is desirable to connect the drill tools to a drill string in a manner that facilitates quick and easy assembly and disassembly. Low torque coupling, commonly referred to as “torque-less” connection, can provide such functionality. The useful life and strength of such connections can be improved upon. The present disclosure provides a low torque coupling with improved strength and durability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.