Measuring and testing – With fluid pressure – Leakage
Patent
1986-08-07
1988-03-15
Levy, Stewart A.
Measuring and testing
With fluid pressure
Leakage
73 52, G01M 336
Patent
active
047304820
ABSTRACT:
The invention relates to a process and an apparatus for monitoring the hermeticity of filled containers closed by sealed-on or welded-on covers, or the like. The air or gas cushion present between the cover and the material with which the container is filled, is heated, and the change caused in the position of the cover, by the resulting increase in the volume of air or gas, is monitored, after which the containers which have been indicated as having missing or faulty covers, are removed.
REFERENCES:
patent: 2512910 (1950-06-01), Bell
patent: 3729984 (1973-05-01), Waldherr
patent: 4326408 (1982-04-01), Kanoh
Cerny Gerhard
Gneithing Alois
Neber Fritz
Welp Ewald G.
Gasti Verpackungsmaschinen GmbH
Levy Stewart A.
Williams Hezron E.
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