Abstract: Provided is a blowing device including a blower that sends air, a blower pipe having an inlet that takes in the air sent from the blower, an outlet that is formed in an elongated opening shape parallel to the portion of the target structure in the longitudinal direction, and a body portion that connects the inlet and the outlet and to cause the air to flow therethrough, and plural flow dividing plates, each of the flow dividing plates having a distributing portion and a changing portion.

Abstract: A two-part clamp-connected chimney flue tee. The tee includes an elongated main section which is detachably connected to a transversely extending bull, or snout section. The main section has flue pipe connection ends and an oval cut-out portion in its sidewall, generally midway between the connection ends. The periphery of the cut-out includes an outwardly flaring flange, for mating with a corresponding contoured end of the bull section. Hooks are mounted on the inner sidewall of the main section, on opposing sides of the cut-out. Lever-actuated clamps, having a U-shaped locking member, are mounted on opposing inner portions of the sidewalls of the contoured end of the bull section. In mating the two sections, the bull section is press-fitted over the flange surrounding the cut-out. A locking member on one side of the contoured end is engaged with a respective hook. Then, the lever on the clamp is snapped toward the adjacent sidewall, into a locked position.

Abstract: An air duct fitting comprising a rectangular cross section duct segment having a central axis, a round cross section duct segment having a central axis, and a transition rectangle-to-round segment, the rectangular cross section duct segment having a lateral round opening with a central axis transverse to the rectangular duct segment central axis, the round cross section duct segment central axis being laterally offset from and parallel to the rectangular duct segment central axis. The transition segment is removably interfitted with the rectangular cross section duct segment, whereby the rectangular cross section duct segment round opening can be oriented in either of two opposite directions, one in a plane in general alignment with the round cross section duct segment central axis and the other in a plane laterally offset from the round cross section duct segment central axis.