Drill Rod Or Adaptor With Strengthened Spigot Coupling
Patent No. EP3095954 (titled "Drill Rod Or Adaptor With Strengthened Spigot Coupling") was filed by Sandvik on May 22, 2015. The application was issued on May 15, 2024.
Patent Summary
A drill string component with a male spigot coupling end that minimizes stress and failure at the threaded region. The component features a shoulder contact region with a non-threaded shank part having a predetermined minimum axial length relative to the external diameter of the threaded section. This design configuration enables the component to withstand non-symmetrical loading forces and bending waves in the drill string, reducing the risk of coupling failure.
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Date
Description
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EP3095954
- Application Number
- EP15168921A
- Filing Date
- May 22, 2015
- Status
- Revoked
- Aug 22, 2025
- Publication Date
- May 15, 2024
- External Links
- Slate, Register , Google Patents