Weld test tool
US5263362A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 10, 1992 |
| Grant date | Nov 23, 1993 |
| Priority date | — |
| Expiry date | Jun 10, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C66/81457
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A pair of semcircular jaws seal against the outer periphery of a pipe adjacent a butt weld joint in the pipe. The jaws have annular pressure rims that apply mechanical pressure against the outer surface of the pipe; and the jaws provide an annular manifold cavity between the pressure rims through which high gas pressure is applied against the joint and adjacent areas of the pipe, all for the purpose of slightly deforming the pipe and opening up any fissure that may exist by reason of an imperfect joint. In a modified form, a cylindrical shroud carries an annulus of balls for supporting against and applying deforming pressure on side portions of the pipe as the shroud is rotated around the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.