Pipe expanding apparatus of thin wall stainless steel pipe
US8528377B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2010 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Oct 16, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L19/0206
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention provides a pipe expanding apparatus of a thin wall stainless steel pipe in which a strain is not generated in a flange and a yoke, even when a pipe expanding rubber swells. The invention includes a flange which forms one inclined surface of a chevron shaped projection portion by internally fitting a thin wall stainless steel pipe, a yoke which forms the other inclined surface of the chevron shaped projection portion by being coupled at its one end side to the flange, and is coupled to a cylinder at its other end side, a guide rod which is coupled to a piston of the cylinder, and a pipe expanding rubber which is pinched between a step portion of the guide rod and a backup ring and expands the thin wall stainless steel pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.