Internal grinding device for pipes and weld joints
US11590624B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2019 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Nov 9, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23Q11/0046
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for treating an interior weld joint located along an inner surface of a pipe includes the steps of: (a) advancing an internal grinder device within the pipe to the interior weld joint, wherein the internal grinder device includes a hollow housing that has a first open end and a first grinding implement that is disposed within the hollow housing and coupled thereto with a first biasing member; and (b) controllably rotating the hollow housing to at least a threshold speed at which time and under centrifugal force, the first grinding implement moves from an at rest retracted position to a deployed position in which the first grinding implement extends radially beyond the first open end for contacting and grinding the interior weld joint as the hollow housing and the first grinding implement are rotated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.