Abstract: A prepared meat product is contained in a disposable package suitable for transporting, cooking, and serving. One specific form is a meat patty; a second specific form is a hamburger patty together with half a hamburger bun; a third specific form is a hamburger patty together with two half hamburger buns; and a fourth specific form is a wiener together with two half wiener buns.The package of the present invention is disposable and is preferably made primarily of aluminum foil. Some specific features of different forms of the package are a built-in grease trap, filtered vent for cooking gases, removable protective cover for the vent, and removable holder for the meat product for removing the cooked meat product from the package when it is to be served.The invention also makes provision for cooking the meat product faster than the bread when both are enclosed in the same package, and provision for using cooking gases from the meat to warm and moisten the bread.

Abstract: A sterile container, including a container body having an open end for receiving an item to be maintained in a sterile environment and with the container body including a flange portion extending around the entire container body at the open end, a sealing cavity formed within the flange portion of the container body and extending throughout the length of the flange portion and with the cavity including an opening having a particular dimension across the opening and with at least a portion of the cavity within the cavity having a larger dimension across the cavity than the particular dimension across the opening, a cover for closing the open end of the container body and with the cover including a flange portion extending around the entire cover, and a sealing cavity formed within the flange portion of the cover and with one of the sealing cavities nested within the other when the cover seals the open end of the container body and with the shape of the sealing cavity in the flange portion of the cover compleme

Abstract: A sheet metal container wall or end closure is provided which includes a weakening line in the sheet metal and a rib formed across the weakening line to facilitate rupture of the residual metal in the weakening line. Such container wall may also have a hollow button formed in it with the weakening line and rib formed in the button whereby flexing of the button stresses the rib and weakening line to initiate rupture of the residual metal in the weakening line.

Abstract: An electronic instrument case formed of breakable plastic and having a section of reduced thickness which is firmly secured to the remainder of the wall of such enclosure by a retainer. Such reduced thickness section can be broken away from the remainder of the wall of the enclosure but it is held in attached relation thereto to thereby provide a "breathing" opening for such enclosure.

Abstract: A closure to be slidably fitted in a container to exclude air from the surface of the material in said container or to be withdrawn to allow access to said material, includes a disc-like closure body, an air vent through said body, a plug to close said vent, a flexible handle attached to said body, characterized by a connection between said plug and said handle whereby force on said handle to withdraw said closure retracts said plug from said vent.