Abstract: Embodiments are shown of a floor opening and/or closing system for pellet stoves and other solid-fuel combustion devices with ash-dumping floors. The system uses a cam system wherein a cam member automatically moves to urge the ash-dumping floor open and/or closed, preferably by means of contact with a following arm extending from or connected to the floor. Preferably, the cam member is a crank arm/lever that contacts surfaces of a cam arm in order to cause the cam arm to pivot between two positions. The cam arm is preferably connected to the ash-dumping floor by a connecting rod, so that movement of the crank arm and resultant movement of the cam arm causes movement of the floor. Adaptations may be made for manual control of the floor, for example, by providing a neutral position for the crank member, wherein the cam arm and its connecting rod may be moved independently from, and unhindered by, the crank arm.

Abstract: Embodiments are shown of a floor opening and/or closing system for pellet stoves and other solid-fuel combustion devices with ash-dumping floors. The system uses a cam system wherein a cam member automatically moves to urge the ash-dumping floor open and/or closed, preferably by means of contact with a following arm extending from or connected to the floor. Preferably, the cam member is a crank arm/lever that contacts surfaces of a cam arm in order to cause the cam arm to pivot between two positions. The cam arm is preferably connected to the ash-dumping floor by a connecting rod, so that movement of the crank arm and resultant movement of the cam arm causes movement of the floor. Adaptations may be made for manual control of the floor, for example, by providing a neutral position for the crank member, wherein the cam arm and its connecting rod may be moved independently from, and unhindered by, the crank arm.