초록 ▼

A device comprising a perforated housing containing therein pellets of a chemical composition which undergoes self-sustaining combustion with generation of a combustion gas and an initiator attached to the housing to ignite the pellets. To prevent breaking of the pellets resulting from their movemen

A device comprising a perforated housing containing therein pellets of a chemical composition which undergoes self-sustaining combustion with generation of a combustion gas and an initiator attached to the housing to ignite the pellets. To prevent breaking of the pellets resulting from their movements in the housing, a hollow and resilient retainer member is placed in the housing such that the initiator is exposed to the interior of the retainer and that the pellets are spaced from the initiator by the retainer and held under a compressive force by the resiliency of the retainer. The retainer has openings which allow a gas to pass therethrough but do not allow the pellets to pass therethrough. A helical spring and a perforated bellows are examples of the retainer.

대표청구항 ▼

A combustion device comprising: a housing defining therein a combustion chamber; a plurality of pellets of a chemical composition, which undergoes self-sustaining combustion with generation of a combustion gas which may be in the form of flame, disposed in the combustion chamber, the housing having

A combustion device comprising: a housing defining therein a combustion chamber; a plurality of pellets of a chemical composition, which undergoes self-sustaining combustion with generation of a combustion gas which may be in the form of flame, disposed in the combustion chamber, the housing having at least one aperture through which the combustion gas jets out of the housing; an initiator for ignition of the pellets attached to the housing so as to be exposed to the combustion chamber; a helical spring placed in the combustion chamber in such an arrangement that one end of the helical spring rests on a wall of the combustion chamber, that the initiator is exposed to the interior of the helical spring and that the pellets are entirely spaced from the initiator by the helical spring and held under a compressive force by resiliency of the helical spring, the pitch of the helical spring being small enough to prevent each of the pellets from passing through the gaps of the helical spring; and a plug fitted into the other end of the helical spring.