Apparatus for testing extruded tubing
US5651999A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 1995 |
| Grant date | Jul 29, 1997 |
| Priority date | — |
| Expiry date | Aug 15, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/815
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus is disclosed for testing the integrity of tubing formed by extruding material through an extrusion die. The apparatus includes a source of helium gas which is fluidly connected to the extrusion die so that helium gas is continuously introduced into the interior of the tube as it is formed during the extruding process. The extruded tubing is passed through an elongated inspection housing open at each end. The inspection housing has a cross-sectional inside shape greater than the cross-sectional shape of the tubing thus forming an annular chamber between the tubing and the interior of the inspection housing. A helium detector constantly monitors the atmosphere within the annular chamber and, whenever helium is detected, indicative that the tubing has a leak or the fault, activates an alarm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.