Abstract: The molded combustion chamber described herein is an improvement on prior art with a number of significant advantages. A single molded piece replaces many fabricated pieces of board and brick with uniformity of material and lower cost. It can be used by itself as a replacement for a grate in a wood/gas fireplace or as the key element of a metal or masonry fabricated fireplace. It can be molded up to 3? in thickness, so that the focus can be on insulation and reflection rather than surface durability. The spherical baffle serves as a secondary combustion area, so that all flames are visible and significantly more heat is radiated into the living space. This design is more efficient and less costly than most EPA certified wood heaters with a secondary combustion chamber or catalytic converter. This design will also help a gas appliance meet the DOE efficiency goal. The absence of a grate and the insulating quality of the material used enable a very small coal bed to ignite new fuel.

Abstract: An improved wall shield and chimney support (WSCS) unit adapted to fit flush within the wall of a dwelling is disclosed. The WSCS unit includes ducts for ducting cooling air entirely around the inner wall of the unit and especially around the front lateral corners and top. The airflows are separated into outer and inner flows with the inner flow insulating the outer flow from combustion heat. The outer flow is then directed to the front of the unit top whereby a hot combustion unit can be brought into close juxtaposition with the WSCS unit without substantial danger of fire. Plural ducts are provided for cooling the rear wall of the unit, having inlets at the bottom rear of the fireplace unit, extending upwardly along the rear wall of the unit, and forwardly around the chimney, further cooling this area. The cooling of the chimney area is also increased by focusing the cooling air with baffles as it passes by the chimney.

Abstract: An improved fireplace unit adapted to fit flush within the wall of a dwelling is disclosed. The fireplace unit comprises duct means for ducting cooling air entirely around the inner wall of the unit and especially around the front lateral edges and top, whereby flammable building materials can be brought into close juxtaposition with the unit without substantial danger of fire. Plural ducts are provided for cooling the rear wall of the unit, having inlets at the bottom rear of the fireplace unit, extending upwardly along the rear wall of the unit, and forwardly around the chimney, further cooling this area. The top wall of the unit comprises an integral support member and thermal break which allows the unit to support a conventional chimney without further support structure and provides a substantial thermal break between the chimney and the front wall of the unit.

Abstract: A wood burning device comprising a metal box with a flue, an automatic flue damper, a combustion chamber formed by layers of insulating refractory material, a transparent ceramic glass front, an insulated refractory baffle forming the top portion of the combustion chamber, a means for introducing air into the combustion chamber, and a smoke deflector upstream from the flue. The stove further includes a support for tilting the box backwards, and a latching mechanism for a slideable door on the ceramic glass front.

Abstract: A fireplace grate comprising a support for holding burning logs and the accompanying hot embers and ashes and including heat transfer structure for transferring heat generated by the logs and embers to the area immediately therebelow. The grate further includes air passageways located in the area below the support. The passageways having air outlets at the front of the grate for directing air into the room in which the fireplace is located and air inlets disposed at a locaton remote from the air outlets for receiving air for passage through the passageways.

Abstract: A fireplace grate comprising a support for holding burning logs and the accompanying hot embers and ashes and including heat transfer structure for transferring heat generated by the logs and embers to the area immediately therebelow. The grate further includes air passageways located in the area below the support. The passageways having air outlets at the front of the grate for directing air into the room in which the fireplace is located and air inlets disposed at location remote from the air outlets for receiving air for passage through the passageways.