The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 1993
Filed:
Mar. 20, 1992
Timothy G Mally, Oregon, WI (US);
Carl W Johnson, Neenah, WI (US);
Oscar Mayer Foods Corporation, Madison, WI (US);
Abstract
An apparatus and a method are provided for detecting leaks in sealed packages. The apparatus and method are particularly well-suited for an on-line system wherein each package filled and sealed on a commercial packaging line is inspected for possible leaks or seal defects. A force transducer arrangement is used, and the package is maintained at substantially constant volume while positive wall pressure over time is monitored. Diagnostic properties can be included whereby it is possible to precisely detect exactly which compartment of a multiple-compartment package and exactly which package station, has an excessive incidence of defects.