Abstract: An apparatus includes a heat exchange member at least partially defining a passageway, and structure defining a first plurality of holes and a second plurality of holes. The first and second pluralities of holes provide fluid communication from the passageway to the exterior of the apparatus, i.e., to the atmosphere. A blower is operatively connected to the heat exchange member and configured to blow air into the passageway. The apparatus is configured such that, when the heat exchange member is sufficiently positioned with respect to a campfire, air exiting the first plurality of holes is directed downward and away from the campfire and air exiting the second plurality of holes has an upward velocity component.

Abstract: The invention relates to a wood pellet stove, comprising a feed device for automatically adding wood pellets in a metered manner from a pellet hopper belonging to the stove. Said pellet hopper having the feed device and a grate is accommodated in a lower, stationary stove part (20), which remains cold and does not become hot during operation. The combustion chamber having a chimney connection is accommodated in an upper stove part (21). The upper stove part (21) is supported on the lower stove part (20) by means of a turntable so that the upper stove part can be swiveled relative to the lower, stationary stove part (20). Thus, the combustion chamber and the viewing window can be swiveled in any desired direction as needed.

Abstract: An apparatus and method used with a conventional barbecue, such as a kettle-type barbecue, which enables the barbecue to be fueled by fuel pellets burned in a fire box. The apparatus includes a support, a hopper and feeder structure for the fire box combined into a unitary construction selectively positionable as a unit on the barbecue body of the barbecue or removed therefrom. In embodiments illustrated, the fire box is positioned so as to direct heat to a desired location within the apparatus.

Abstract: A portable pellet fired heating element for mounting to a grill or stove and comprising a gravity fed pellet holder, a unitary tubular structure having a burner, an air intake and an exhaust chute. Fuel may be supplied to the pellet holder by various supply means such as a conveyer, ramp, scooped, held in bulk in a hopper, and like pellet supply structures and methods. Fuel is fed to the air-cooled insulated burner area onto a decomposer grate, which defines the primary combustion area and which is partially open to the atmosphere for air intake. An adjustable high-pressure flow of gas or vapor is introduced to the primary exhaust chute below the decomposer grate to create a low pressure flow above the grate and which upon ignition, cause flames to be pulled into the pellet mass on the grate.

Abstract: A biomass pellet burning stove has a hopper storing biomass pellets which are transported from the hopper to a feeder tube with a rotating disc having slots for holding biomass pellets and allowing the biomass pellets to move from the slots into a feeder tube which directs the biomass pellets to a burn pot. The burn pot has first and second biomass burning chambers that separately burn biomass pellets by an efficient, environmental and economic compatible process.

Abstract: A pellet fuel burner, such as a cooking grill, has a fire box with a generally open top plane. A pellet burner unit is disposed in the fire box below the cooking surface. A pellet feeding device opens into the fire box and is disposed so as to feed pellets into the burner unit. A pressure box has an inlet supplied with combustion air at a positive pressure. A plurality of outlets are provided in the pressure box and disposed so as to create a turbulent combustion air flow in the pellet burner unit. The outlets may include a first outlet disposed above the burner unit and a second outlet disposed below the burner unit. The turbulent combustion air flow and supply of pellets, particularly corn kernels from the pellet feeding device allow for a continuous sustained combustion of the fuel in the pellet burner.

Abstract: A fireplace for food cooking having a planar member adapted to receive coals dispersed thereon and having two sides extending perpendicular therefrom on opposite sides thereof and a back extending perpendicular therefrom and between the two sides. A fireplace hood is supported on the two sides and the back. The fireplace hood has a duct extending upwardly therefrom. The duct is adapted to allow smoke to discharge from the hood. A baffle plate wall has its ends affixed to the two sides and a back side spaced from the back so as to define a hollow space therewith. The baffle plate wall is positioned between the planar member and the fireplace hood so as to define a combustion chamber and a cooking chamber. The hollow space has an upper opening and a lower opening. The lower opening defining an access mouth adapted to draw the coals in the combustion chamber.

Abstract: In an endoscope with a camera objective, in particular a video camera objective, coupled to the eyepiece cup of the endoscope at its proximal end, the objective is mounted so that it is free to rotate on the proximal end of the eyepiece cup. The camera objective and its camera head have a center of gravity which is offset from the axis of rotation of the objective so that the objective maintains its orientation if the endoscope is rotated about its longitudinal axis, whereby such rotation of the endoscope does not affect the endoscopic picture displayed on a monitor of the video camera.