High tensile strength joint for connecting rods and fittings
US10132343B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2012 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Jul 12, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A joint exhibits high tensile strength. The joint includes a solid rod having a slit or opening into which a wedge is inserted. The rod and wedge are inserted into a fitting. The internal surface of the fitting has a contour which continuously and nonlinearly varies with distance along the fitting. The wedge has a dimension having a similar contour. The shape of the contour can be described by a polynomial of order two or higher. The joint can be used to construct a sucker rod for an oil well, or it can be used in other applications. The joint can support high tensile loads, over long distances, while occupying a very narrow tubing bore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.