Apparatus and method for leak testing
US8205484B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 23, 2009 |
| Grant date | Jun 26, 2012 |
| Priority date | — |
| Expiry date | Dec 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/3263
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A leak testing apparatus 1 includes a heat sensitive member 70 having a body 71 made of a material having high thermal conductivity. The body 71 is abutted against an outer surface of a workpiece 10 to close an opening of an inner space 11 of the workpiece 10. A pressure chamber 73 is formed inside the body 71 as arranged along the outer surface and as arranged over an area wider than the opening. Pressurized gas is introduced to the pressure chamber 73. Data on pressure change in the inner space 11 of the workpiece 10 is compensated based on inner pressure information regarding the pressure chamber 73, and leak judgment is made.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.