Apparatus and method for sealing a tube joint
US4480841A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1982 |
| Grant date | Nov 6, 1984 |
| Priority date | — |
| Expiry date | Oct 13, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An apparatus for sealing a joint between two substantially collinear tubes (12,14) is provided. Particularly useful for repairing a welded joint which has developed a crack (20) in the area of the weld (18), the apparatus provides a sleeve (26) which fits closely over the cracked joint. A housing (32), surrounding the sleeve (26), and a thrust ring (38) act to compress packing rings (28,30) against the sleeve to form a fluid-tight seal over the leaking joint. The sealing nut (40) maintains compression on the packing rings (28,30) when the installation apparatus (50,60,70) is removed. A method for installing the sealing apparatus is also disclosed herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.