Abstract: An outdoor grill is provided that has a base which houses an interior firebox and a cooking surface located above the firebox. The base has a grill top pivotally coupled thereto above the cooking surface. The grill top has an inner wall mounted within its interior which extends upwardly and rearwardly. The grill top has a rear wall that has a vent which is located below the intersection of the inner wall and the rear wall. Hot air rising from the firebox is directed rearwardly and upwardly by the inner wall and exits the grill top through the vent. The top surface of the grill top is thus insulated from the hot air by the inner wall and the vent. A second vent may be provided in the front wall of the grill top, which allows fresh air to flow rearwardly and upwardly above the inner wall. The air is allowed to exit the grill top through a chimney formed in the grill top near the rear of the top.

Abstract: A catalytic insert for an existing fireplace structure includes a frame for carrying a catalyst member. The frame is disposed in the fireplace structure at a vertically elevated position such that an upper chamber is formed in the structure, and such that at least a portion of the combustion products generated in the fireplace flow into the chamber through the catalyst member and exit the chamber into the room in which the fireplace structure is located. A support member extends from the frame to the fireplace structure bottom wall. The support member provides the main source of support of the frame within the fireplace structure. The frame and support member are adapted to be positionable in an existing fireplace structure to allow catalytic reaction of combustion products generated in the fireplace structure. The frame of the insert can also be adjustable to conform to multiple configurations of the fireplace structure.

Abstract: A barometric damper has a housing which is adapted to be coupled with a structure. The housing has an opening that allows spatial communication between the interior and the exterior of the structure. The damper also has a damper blade. The damper blade is movably coupled with the housing. The blade has an open position where the blade accommodates air passage through the opening and a closed position where the flow of air through the opening is substantially precluded. The damper also has a lever that is movably coupled with the housing. The lever has an attaching means that is used to attach the lever to the blade when desired. The lever is movable between a first position where the lever accommodates free movement of the blade in response to barometric pressure changes on opposite sides of the blade, and a second position where the lever maintains the attaching means against the blade, thus holding the blade in its closed position.

Abstract: An unvented gas-fired heater assembly including a base having a gas burner mounted thereon in a combustion area. Gas logs are disposed in the combustion area for heating by the gas burner. A duct assembly is provided which directs heated air from the heater assembly, and the duct assembly is height adjustable to change the height at which air is discharged from the unit. All of the components of the heater are assembled as a unit so that the unit is easily insertable and mountable in an enclosure sure as a fireplace.

Abstract: An unvented fireplace heater assembly for directing heated air into an enclosure such as a room. The fireplace heater includes a combustion chamber mounted in spaced relation in enclosing panels. A plenum chamber is disposed in the panels adjacent to the unvented combustion chamber, and insulation may be selectively provided between the panels and the plenum chamber.

Abstract: A jacketed wood burning stove of the type having an inner firebox door and an outer jacket door in front of the firebox door and wherein a flash inhibitor is provided consisting of a relatively small auxiliary firebox door which is manually biased open but is held closed by an engaging bracket on the outer jacket door when the outer jacket door is closed.

Abstract: A dehumidifier wherein an evaporator, condenser and fan are positioned vertically, from top to bottom, in this order, between an upper air entrance and a lower exit of the dehumidifier.

Abstract: A jacketed wood burning stove of the type having an inner firebox door and an outer jacket door in front of the firebox door and wherein a flash inhibitor is provided consisting of a relatively small auxiliary firebox door which is manually biased open but is held closed by an engaging bracket on the outer jacket door when the outer jacket door is closed.

Abstract: A wood burning furnace or space heater having a jacket surrounding a firebox and forming a plenum through which air to be heated is forced by a fan. There is a door in the jacket which automatically opens in the event of a failure of a fan, and thus excessively heated air is immediately released.

Abstract: A fireplace having means for the injection of combustion and necessary dilution air consisting of a pair of louvered chambers positioned on each side of the front of the fireplace. Deflectors associated with the louvers direct the air inward and upward, whereby streams of air from the two louvered chambers combine in the central upper region of the fireplace opening and enter the fireplace. The supplemental air is obtained from outside the building housing the fireplace through a cased inlet or inlets on the outside wall of the building, the casing having an air entrance face which is outward of the wall by a dimension of approximately 1/4 to 3/4 inch.

Abstract: A forced air assembly for attachment to an otherwise unjacketed space heater consisting of a fan or blower centrally mounted in a relatively thin (height compared with width) channel, the channel being adapted to wrap around varying contours of stoves by virtue of a series of cut-out regions in side walls of the channel. Air is forced through the channel, heated, and flows out of the ends of the channel.

Abstract: The circuit control unit of the present invention comprises a piston-type pressure responsive member or gauge wherein one end of the piston extends beyond the gauge body and carries an actuator which is movable with the piston. A circuit control member is mounted for actuation by the actuator for controlling an external electrical circuit in response to changes in fluid pressure as detected by the pressure responsive member. Where desired, an indicator may be mounted in fixed relationship with the pressure responsive member, providing means for visibly indicating the pressure of the fluid and the position of the piston with respect to the pressure responsive member.