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. 19, 1992
Filed:
Jul. 13, 1990
Pierre J Jacques, Huntington, NY (US);
Other;
Abstract
A package is provided which includes a container having a chamber and provided with an opening which is closed by a multi-layered sheet. The multi-layered sheet is coupled to the container in hermetically sealed relation. The multi-layer sheet includes first and second layers in face-to-face relationship and cooperatively melded to the edge portion of the container. The first layer is adjacent to the container and obturates the opening of the container. The second layer is provided with a slit arrangement defining at least one displaceable flap. The first layer is imperforate and is relatively thin. It responds to a buildup of pressure within the container to rupture and displace the flap in order to vent the container. A third layer is further provided which is connected in face-to-face relationship with the second layer and which is also provided with the aforementioned slit arrangement. The third layer is relatively heat resistant and shape retentive and includes at least one flap in registration with the aforementioned flap. The slit arrangement is, for example, H-shaped, but may also be Z-shaped or U-shaped. Preferably, the first layer is maintained in detached relationship to the second layer in an area encompassing the slit arrangement. The first and third layers are relatively thin in comparison with the second layer.