Abstract: An exhaust adapter secures an exhaust tube relative to an exhaust pipe. The exhaust adapter is formed to have an annular shape enclosing a through hole, and is mounted on the outer peripheral surface of the exhaust tube and on the inner peripheral surface of the exhaust pipe by inserting the exhaust tube into the through hole. When the exhaust adapter is being fitted on the outer peripheral surface of the exhaust tube, the inner peripheral surface of the exhaust adapter presses the outer peripheral surface of the exhaust tube, and when the exhaust adapter is being fitted on the inner peripheral surface of the exhaust pipe, the outer peripheral surface of the exhaust adapter presses the inner peripheral surface of the exhaust pipe.

Abstract: A covering system that covers an end pipe of a chimney system. A portion of the end pipe protrudes from the roof of a house or building where the chimney system is located. The system comprises of at least two base supports that sit on the roof. A channel spanning around the end pipe of the chimney system that protrudes from the roof. The base supports are attached at the base of the channel. The base has a protruding section whose dimensions are larger than the channel. A collar covering having a first and a second opening. The collar covers the protruding section of the base by its first opening and receives the channel at its second opening. A crown top base that slides inside of the channel from the top.

Abstract: A pipe flashing protector for protecting the vulnerable joint between a vent pipe and the roof flashing for a building, house or other architectural structure to prevent wear and decay of the joint and more specifically to protect the joint from ultraviolet light, moisture, and debris.

Abstract: A swivel joint for a chimney shield is provided. In one embodiment, the swivel joint comprises a first cylindrical member and a second cylindrical member having an end portion received in an end portion of said first cylindrical member and rotatably coupled to the first cylindrical member. The first and second cylindrical members extends along a central longitudinal axis and the first and second cylindrical members rotate independently of one another about a plane perpendicular to the central longitudinal axis.

Abstract: A venting apparatus includes a projecting member with a projection base, and a mating socket member with a socket base, and first and second ducts in fluid communication with an appliance to vent emissions along an emission flow path. The projection base engages a first one, and the socket base engages a respective other one, of the first and second ducts. The projecting and socket members have default configurations. The projecting member is movable from the default configuration towards a deflected configuration, and biased for return therefrom. The first and second ducts are movable between sliding and locked configurations. In the sliding configuration, the projecting and socket members bear against one another, with the projecting member removed from the default configuration. In the locked configuration, the projecting member is in the default configuration, and secured to the socket member, such that the second duct securely engages the first duct.

Abstract: A venting system for a direct vent fireplace or other direct vent appliance to direct combustion gases to an exterior area. The direct venting vent pipe facilitates unrestricted lengths of pipe installations. The vent pipe has a double wall construction forming an interior axial passageway and a coaxial outer passageway. The double walls are spaced apart by an insert to maintain coaxial spacing. Sections of the vent pipe are lockingly connected to prevent separation and ensure sealing connection between the pipe sections. Elastic seal members are utilized between the matingly connected sections and a mechanical lock assembly prevents separation.

Abstract: Each longitudinal section of a concentric direct vent duct structure for a fuel-fired appliance, such as a furnace, is formed using a tubular outer duct having an axially spaced pair of triangular stand-off frame members anchored therein, and a smaller diameter inner duct having an axially spaced pair of ramped external annular locking projections thereon. To assemble the concentric duct section, the inner duct is simply axially inserted into the outer duct. As the inner duct is inserted into the outer duct, a ramped annular side surface on the leading inner duct locking projection resiliently and radially outwardly deflects side wall portions of the stand-off frame members and then permits them to snap back to their original undeflected positions.

Abstract: A coaxial pipe assembly for a direct vent fireplace coaxial flue-system. The coaxial pipe assembly has an inner flue pipe residing within an outer flue pipe where the two pipes are retained to one another. Each flue pipe has a male connector and a female connector with the male connector of the outer flue pipe being aligned with the female end of the inner flue pipe. Lances are formed into the female connector of the outer flue pipe and a locking ridge is formed into the male connector of the outer flue pipe. Each of the two flue pipes of a first coaxial pipe assembly is designed to engage their counterpart in an adjacent coaxial pipe assembly. This engagement seals the adjacent inner flue pipes and is fixed upon the locking ridge passing the lances of a first coaxial pipe assembly to snap into place.

Abstract: Flue sections and an airtight venting system being made therefrom by connecting in line the flue sections. The flue section has a pair of opposite ends of circular cross-section one of which called "male end" is shaped and sized to fit into the other end, called "female end" of a similar flue section. The male end comprises at least two outwardly-projecting L-shaped grooves, a peripheral outwardly-opening recess and an O-ring mounted therein and protruding outwardly. The L-shaped grooves are positioned in such a manner to have an opening at the male end of the flue section. The recess is positioned at a distance "H" from the L-shaped groove.

Abstract: Insulated flexible metal piping is provided which includes a metal piping section having inner and outer windings comprising metal bands which are spiral-wound in overlying relation with their leading and trailing edges forming a spiral, interlocked seam. The flexible metal piping section is slidably inserted in an insulating sleeve, which can comprise a plastic material for enclosing the metal piping section. A method of forming the insulated metal piping is disclosed which includes the steps of providing inner and outer spiral windings; interlocking the leading and trailing edges thereof; and slidably inserting a flexible metal piping section formed thereby in an insulating sleeve. Further disclosed is an application of the insulated metal piping in a flue system.

Abstract: A flue insulation assembly comprising an insulation lining surrounding the flue wall in spaced relationship and composed of insulation elements retained by a mounting structure. The insulation lining is composed of a plurality of plate-shaped insulation elements laterally abutting one another so as to form a near-annular polygon, and the mounting structure is composed of vertically spaced mounting rings connected to the flue wall by mounting ring supports and adapted to retain the insulation elements therebetween. The mounting rings are provided with stop elements projecting over the upper and lower rims of the plate-shaped insulation elements on both sides thereof, and an outer skin is secured to the mounting rings.