Metal pipe expander
US6334351B1 · kind B1 · utility
94Cited by
1References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 7, 2000 |
| Grant date | Jan 1, 2002 |
| Priority date | — |
| Expiry date | Nov 7, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49718
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A metal pipe expander which is inserted into a metal pipe and driven to move in the axial direction of the metal pipe by a liquid pressure has an expanding section and a pressure receiving section. The expanding section has a conical portion of which a small diameter portion is directed to a front side. The pressure receiving section has a cup shaped portion opened to the rear side, the outer surface of which is in slide contact with an inner surface of the metal pipe after it is expanded in diameter. The pressure receiving section is provided at a rear end of an expanding section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.