Abstract: An apparatus for reducing nitrogen dioxide emissions in a flueless heating appliance or heater includes a heat-exchanger for exchanging heat contained in fumes produced by the combustion of a fuel in the heating appliance. A heating appliance or heater without a fume flue includes a burner supplied with a gaseous fuel, an evacuator for discharging into an environment outside the heater fumes produced by combustion of the fuel, and a heat-exchanger for receiving the fumes from the burner and sending them to the evacuator. A method for reducing nitrogen dioxide emissions in a flueless heating appliance, supplied with a gaseous fuel, includes removing heat in a controlled manner from fumes produced by the combustion of the fuel so as to minimize the conversion of NO into NO2 in the fumes.

Abstract: An apparatus for reducing nitrogen dioxide emissions in a flueless heating appliance comprises heat-exchanger means suitable for being crossed by the fumes produced by the combustion of a fuel in said heating appliance. A heating appliance without a fume flue comprises burner means supplied with a gaseous fuel, evacuation means for discharging into the outside environment fumes produced by the combustion of said fuel and heat-exchanger means suitable for receiving said fumes from said burner means and sending them to said evacuation means. A method for reducing nitrogen dioxide emissions in a flueless heating appliance, supplied with a gaseous fuel, comprises removing heat in a controlled manner from fumes produced by the combustion of said fuel so as to minimize the conversion of NO into NO2 in said fumes.

Abstract: Rotating Disk Peep Sight System comprising a round disk (10) with a hole (20) punched in the center sized to receive a bow string (18). The disk (10) has one or more symmetric holes (12) punched near the rim (34). The disk (10) and holes (12) are horizontal when the bow (36) is in a braced position with the bow string (18) vertical. When the bow (36) is drawn the disk (10) is very close to the archer's eye and the disk (10) is tilted revealing to the archer's eye, sighting openings through the holes (12) punched near the rim (34) of the disk (10). Retaining rings (14) or some other stabilizing device will be installed above and below the disk (10) to hold it in place and to space the sighting holes (12) a distance from the string. The disk (10) and rings (14) can be installed with or without a base (16 ) underneath. An aligning system (tag-line type system) prevents the disk (10) and string (18) from rotating during the draw, hold, and throughout the complete release.

Abstract: An adjustable arrow rest assembly (18) for an archery bow to support an arrow shaft. The arrow rest assembly (18) comprises arrow rest (20), a mounting bracket (28A) and support arm (22). The support arm has a threaded aperture (23) on one end to secure the rest (20). The bracket (28A) has a slot (30A) to receive and adjust the support arm (22) laterally, vertically, and radially. The bracket (28A) is attached to the bow, to position the rest (20), to extend and pivot, from the bow arm side of the arrow.