Method for creating a high tensile strength joint for connecting rods and fittings
US11391312B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2018 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Sep 30, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B11/008
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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. Only a small amount of adhesive material is applied between the fitting and the rod. The adhesive material may be blended with non-adhesive, non-compressible “beads” that have a preferred diameter in order to insure that the desired adhesive thickness is achieved between the fitting and the rod. 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.