Claims
- 1. Method of testing containers, more particularly glass or plastic bottles, comprising the steps of placing a head sealingly onto the mouth of the container, putting the interior of the container under pressure by means of a metering piston which can be displaced in relation to the head, and measuring the pressure by means of a pressure sensor to check the volume of the container, and characterised in that the pressure sensor records the pressure gradient when the head is placed onto the container, and said gradient is used as the signal to begin the subsequent displacement of the metering piston and the pressure measurement.
- 2. Method according to claim 1, characterised in that a plurality of pressure readings are taken at different times, and that at least two pressure readings are utilized to detect leakage from the container.
Priority Claims (2)
Number |
Date |
Country |
Kind |
02022/91 |
Jul 1991 |
CHX |
|
00846/92 |
Mar 1992 |
CHX |
|
Parent Case Info
This is a divisional of co-pending application Ser. No. 07/909,975 filed on Jul. 7, 1992.
US Referenced Citations (8)
Foreign Referenced Citations (7)
Number |
Date |
Country |
WO8600701 |
Jan 1986 |
EPX |
0217140 |
Apr 1987 |
EPX |
0279120 |
Aug 1988 |
EPX |
3108459 |
Sep 1982 |
DEX |
3722422 |
Dec 1988 |
DEX |
2021300 |
Jul 1970 |
FRX |
657209 |
Aug 1986 |
CHX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
909975 |
Jul 1992 |
|