초록 ▼

A package containing a particulate product under pressure which automatically releases the pressure upon opening with an ordinary can opener, while preventing escape of the particulate material. The package is made up of a container having a closed top and a closed bottom which are connected to a bo

A package containing a particulate product under pressure which automatically releases the pressure upon opening with an ordinary can opener, while preventing escape of the particulate material. The package is made up of a container having a closed top and a closed bottom which are connected to a body portion to define a gas tight interior compartment. The container has an inwardly directed bead along the perimeter of the body of the container located at a predetermined distance from the top. A non-porous product separator is placed within the container above the bead so that its perimeter is adjacent to the perimeter of the body of the container. The separator divides the interior compartment into a product chamber, below the separator, and a product free chamber above the separator. The distance from the bead to the top of the container is such that rocking of the separator with respect to the vertical axis of the container is prevented to the extent that the particulate product is prevented from migrating around the separator and into the product-free chamber before and during opening.

대표청구항 ▼

A package containing a particulate product under pressure, said package exhibiting the ability to automatically release said pressure upon opening while substantially preventing the escape of said particulate material from said package during the opening process, said package comprising: a) a contai

A package containing a particulate product under pressure, said package exhibiting the ability to automatically release said pressure upon opening while substantially preventing the escape of said particulate material from said package during the opening process, said package comprising: a) a container having a closed top and a closed bottom interconnected to one another by a body portion to define a substantially gas tight interior compartment containing said particulate product under pressure, said vertical axis of said container running from said top to said bottom, said container further including an inwardly directed bead along substantially the entire perimeter of said body portion, said bead being located at a predetermined distance below said top of said container; and b) a substantially non-porous product separator disposed within said interior compartment above said bead and adjacent said top of said container, said separator having an outermost perimeter adjacent to the innermost perimeter of said body portion of said package creating a tortuous path around said separator, said separator dividing said interior compartment into a product chamber located below said separator and a product-free chamber located above said separator, said product-free chamber being substantially void of said particulate product, said predetermined distance from said bead to said top of said container being such that any rocking movement of said separator with respect to the vertical axis of said container is substantially prevented to the extent that said particulate material is substantially prevented from migrating around said separator and into said product-free chamber before and during opening, whereby when said top of said container is initially punctured with a can opener the gas in said package escapes through said puncture by going around said bead, through the interface existing between said separator and said body portion of said container and out through the puncture while said particulate product is substantially prevented from escaping from said package during the opening process.