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:
Sep. 10, 1985
Filed:
Jul. 25, 1983
Benny L Hester, Winston-Salem, NC (US);
William H Graves, Jr, Pfafftown, NC (US);
R. J. Reynolds Tobacco Company, Winston-Salem, NC (US);
Abstract
A method and apparatus for testing packages for leaks. Selected values of suction and positive pressure are supplied to a testing position, which may be a test head. A package to be tested is held in the testing position by the suction, and positive pressure is introduced into the package through a puncture, which may be made before or after the package is placed in position. Values of suction and positive pressure are chosen such that a package meeting leakage specifications will contain sufficient positive pressure to overcome the suction, causing the package to be ejected from the testing position. If the package does not meet specification, leakage will cause the suction to hold the package in position. Thus, a rapid and visible indication of package quality is provided.