Apparatus and method to expand casing
US6622797B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 24, 2001 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Dec 5, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L15/004
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tool for radially plastically expanding a pipe having a threaded connection therein, that includes a first section. The first section has an increasing diameter and increasing cone angle along a direction of travel through the pipe. The first section includes a first outer surface adapted to contact an inner surface of the pipe at a plurality of selected contact patches on the first outer surface. The tool also includes a second section axially disposed behind the first section along the direction of travel. The second section has an increasing diameter and decreasing cone angle along the direction of travel. The second section includes a second outer surface adapted to contact an inner surface of the pipe at at least one selected contact patch on the second outer surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.