Pipe gauging and rounding apparatus and method
US6490900B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2000 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Nov 3, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D3/05
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Apparatus and method for gauging and rounding, at room temperature, a section of fully formed seamless ductile iron pipe that has an out-of-round initial cross-section profile and/or a larger than desired initial gauge. The apparatus includes a set of hour-glass shaped gauging/rounding rolls arranged so that the combined profiles of adjacent rolls forms a substantially continuous circular of precise diameter. In operation, the ductile iron pipe is passed though the opening in the set of gauging/rounding rolls, thereby causing the pipe to be gauged and rounded. The pipe is conveyed through one or two sets of rolls to accommodate multiple pipe diameters by a transport mechanism consisting of a rail mounted push car which is moved by one or more fluid actuated cylinders anchored to a base in common with the rail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.