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:
May. 30, 1995
Filed:
May. 06, 1993
Mark D Jamison, Zion, IL (US);
Other;
Abstract
A flexible pouch having a pressure sensitive gas valve for releasing gas from a sealed flexible pouch is disclosed. The gas valve is integrally formed in the lateral edge portions of the front and back wall panels which are heat sealed to form the flexible pouch. The gas valve has an unobstructed tortuous gas pathway, preferably having convoluted channels, extending across at least one and preferably both of the lateral heat seals of the pouch with one end of the gas pathway opening into the interior of the flexible pouch and the outer end of the gas pathway open to the ambient atmosphere at the outer edge of the lateral heat seal. A method of forming a pressure sensitive gas valve in each lateral heat seal of a flexible pouch is also disclosed.