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. 11, 1990
Filed:
Dec. 26, 1984
Applicant:
Inventors:
Dennis W Beaty, Arlington, TX (US);
C Brooks Shafer, Dallas, TX (US);
Assignee:
Frito-Lay, Inc., Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
73 493 ; 73 52 ;
Abstract
A method and apparatus can automatically detect the presence of leaks in sealed plastic bags filled with product and gas by detecting the amount of displacement and the variation in displacement over time of a displacement transducer movable into contact with a fluffed bag, and utilizing the variation of displacement over time to detect such leaks. The variation of displacement over time is compared to the variation (or lack thereof) observed in a control bag without appreciable leaks, and a sufficient difference therebetween indicates a bag with a leak, which is thereafter rejected.