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. 01, 1987
Filed:
Jul. 16, 1986
Applicant:
Inventor:
Mathias L Aarts, Bilthoven, NL;
Assignee:
Product Suppliers AG, Zug, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
73 493 ;
Abstract
A bag for use in leak testing vacuum packages, by placing a vacuum package in a bag of elastic flexible foil, providing a pressure differential between the outside and the inside of the bag, and monitoring the pressure variation in the space between the outside of the package and the inside of the flexible bag. According to the invention, the bag is double-walled with the inner and outer walls merging into each other at the open end of the bag, is provided with a dimensionally stable frame between the walls of the bag, and is further provided with an inlet for admitting compressed air into the space between the walls of the bag.