Abstract: A self-heating container comprising a container with a heater fixed therein. The heater includes a pyrogen, a firing agent in contact with and easier to fire than the pyrogen, and an igniter including a rotatably supported striker wheel and a flint mounted for compressive engagement with the wheel. The wheel is rotatably engageable from outside the container.

Abstract: A-self heating container comprising a container with a heater fixed therein. The heater includes a pryogen, a firing agent in contact with and easier to fire than the pyrogen, and an igniter including a rotatably supported striker wheel and a flint mounted for compressive engagement with the wheel. The wheel is rotatably engageable from outside the container.

Abstract: An ignition system comprising a metal plate having a pyrogen on one side thereof, a turning shaft journalled by the plate, and a sparking wheel secured to the shaft. A flint is supported by the plate and pressed against the wheel. An opening is formed in the plate adjacent the wheel, and a screen is formed on the plate adjacent the opening. The screen deflects sparks through the opening to the pyrogen, and the screen is preferably angled to efficiently deflect the sparks. The igniter is mounted in a self-heating container for heating food or a liquid.

Abstract: A self-heating container comprising a heater contained in a container. The heater includes a pyrogen of high energy density having a large heating value, and a firing agent contacting the pyrogen and easier to fire than the pyrogen. Each of the pyrogen and the firing agents is a mixture of one or more kinds of metal oxide powder and one or more kinds of powder of elementary substances or alloys of metal and semimetal. The heater is supported on a wall of the container through a heat insulator to reduce the heat loss. The insulator has a bore formed through it and extending between the firing agent and the outside of the container. An igniter can be inserted into the bore to ignite the firing agent.

Abstract: A lid for a receptacle containing instant-cooking foods. The lid has an upper layer attached to a lower layer, and one of the layers is either perforated to be easily rupturable or has at least one opening therethrough. Furthermore, the upper layer has at least one portion extending beyond the edge of the lower layer.

Abstract: A lid which has a bottom portion and an upwardly extending sidewall surrounding the bottom portion and which is to be removably fitted within the inside walls of a receptacle. The sidewall portion is formed with a plurality of longitudinal grooves, whereby when the lid is fitted into the receptacle, a passageway is created which connects the interior of the receptacle beneath said bottom portion with the exterior of said receptacle above said bottom portion. The lid may be made of heat-resistant plastic.