Abstract: The invention relates to providing a virtually air tight seal of the joints of fittings used in HVAC air distribution systems. The invention relates to the manufacturing process, equipment used in the manufacturing process, and the sealed fitting itself.

Abstract: A stacked package of angle plates for use in association with a device for assembling individual ones of said angle plates into receptive flanges of HVAC duct sections is disclosed. A strap zone is defined as a portion of the stacked package located proximate to the apex of each of the angle plates, preferably from the apex to a point approximately 25% along the length of each of the legs. A single tensioned strap is placed extending around each of the angle plates in the stacked package and is located within the strap zone. The strap exerts a sufficient amount of tension to restrain each of the angle plates within the stacked package, and is preferably four foot-pounds.

Abstract: A register boot which has a duct opening at one end and a register opening at the other end that protrudes through a hole in a structure that is made of flexible material that is deformable and also restores itself to the natural shape of the register boot. Because the register boot is deformable it is able to pass through the hole in the structure. The register boot then restores itself to its original shape. The register boot as described allows for a method of installation that allows a single person to install the register boot.

Abstract: Provided herein are compositions and methods of preparing a liquid adhesive concentrate and a liquid adhesive formulation for use as an adhesive in installing insulation on the outside or inside surface of a duct or ductwork.

Abstract: A double wall round or oval duct system assembly having an outer duct connector, an inner duct connector and a closure ring is provided. The inner duct connector of the duct assembly has an adhesive applied on the transverse flange face of its transverse flange thus allowing a sealing connection between the inner and outer duct connectors upon compression with the closure ring. The double wall round or oval duct system assembly will improve the efficiency and will reduce or eliminate air leakage upon connection of two round or oval duct segments. A method of installing the assembly system is also provided.

Abstract: A high efficiency take-off fitting allows conditioned air from a rectangular cross-section main duct to be smoothly transferred into a circular cross-section branch duct.

Abstract: A stacked package of angle plates for use in association with a device for assembling individual ones of said angle plates into receptive flanges of HVAC duct sections is disclosed. A strap zone is defined as a portion of the stacked package located proximate to the apex of each of the angle plates, preferably from the apex to a point approximately 25% along the length of each of the legs. A single tensioned strap is placed extending around each of the angle plates in the stacked package and is located within the strap zone. The strap exerts a sufficient amount of tension to restrain each of the angle plates within the stacked package, and is preferably four foot-pounds.

Abstract: A circular sheet metal duct having a sealant applied across the longitudinal seam. The sealant will improve the efficiency and will reduce or eliminate air leakage from the longitudinal seam. The sealant is applied during the manufacturing processes so that an installer does not have to seal the duct work. The method of manufacturing the sealant is provided.

Abstract: A circular sheet metal duct having a sealant applied across the longitudinal seam. The sealant will improve the efficiency and will reduce or eliminate air leakage from the longitudinal seam. The sealant is applied during the manufacturing processes so that an installer does not have to seal the duct work. The method of manufacturing the sealant is provided.

Abstract: This invention provides for a sealed drive slip that may be roll-formed from sheet metal. The sealed drive slip has a gasket on the flat portion of the sheet metal and prevents air leakage between the inside and outside of the air duct.

Abstract: A double wall round or oval duct system assembly having an outer duct connector, an inner duct connector and a closure ring is provided. The inner duct connector of the duct assembly has an adhesive applied on the transverse flange face of its transverse flange thus allowing a sealing connection between the inner and outer duct connectors upon compression with the closure ring. The double wall round or oval duct system assembly will improve the efficiency and will reduce or eliminate air leakage upon connection of two round or oval duct segments. A method of installing the assembly system is also provided.

Abstract: This invention relates to sealing HVAC ductwork along its joints in order to reduce air leakage. The ductwork can be sealed by the combination of a gasket and mechanical locking mechanism.

Abstract: This invention relates to sealing HVAC ductwork along its joints in order to reduce air leakage. The ductwork can be sealed by the combination of a gasket and mechanical locking mechanism.

Abstract: Sealing HVAC ductwork along its joints to reduce air leakage is achieved by the combination of a gasket and mechanical locking mechanisms.

Abstract: A high efficiency HVAC duct system for residential ductwork that is useable for multiple residential houses and is sealed from the manufacturing process.

Abstract: A rectangular cross-section sheet metal duct system that is automatically sealed when assembled prevents or reduces leakage of air from the duct system.

Abstract: A high efficiency take-off fitting allows conditioned air from a rectangular cross-section main duct to be smoothly transferred into a circular cross-section branch duct.

Abstract: A flexible contoured boot for transmitting air to or from a room register in a building.

Abstract: A circular sheet metal duct having a sealant applied across the longitudinal seam. The sealant will improve the efficiency and will reduce or eliminate air leakage from the longitudinal seam. The sealant is applied during the manufacturing processes so that an installer does not have to seal the duct work. The method of manufacturing the sealant is provided.

Abstract: This invention relates to sealing HVAC ductwork along its joints in order to reduce air leakage. The ductwork can be sealed by the combination of a gasket and mechanical locking mechanism.