An extractor system includes a negative pressure gas stream source, a negative pressure conduit, a positive pressure gas stream source, a plurality of positive pressure gas stream manifolds, and an operator interface. The negative pressure conduit is conveys the negative pressure gas stream from a work area. A first end of the negative pressure conduit is coupled to the negative pressure gas stream source, such that the negative pressure gas stream flows from the work area through a second end of the negative pressure conduit and toward the first end of the negative pressure conduit. The positive pressure gas stream manifolds are disposed about the negative pressure conduit at the second end of the negative pressure conduit, and fluidly coupled to the positive pressure gas stream source. The positive pressure gas stream is directed through the plurality of positive pressure gas stream manifolds. The operator interface allows a user to control the positive pressure gas stream through each of the plurality of positive pressure gas stream manifolds.

An attic fan assembly having a cover, a housing, and a flashing. The housing having a first opening, a second opening, and a sidewall positioned between the openings. The sidewall having a plurality of apertures that can be positioned in a variety of configurations. A motor and fan blade assembly can be located within the housing. The flashing and the cover of the attic fan assembly can be removably attached to the housing. The flashing can be used to secure the attic fan assembly to the roof of a structure.

This invention relates to smoke removal and exhaust air ventilation devices with a radial flow, namely to radial-flow (centrifugal) smoke removal and ventilation fans installed on the roofs of buildings, and providing removal of smoke, gases and air from the premises in the event of fire or gas contamination by force of the natural draft. The rotary roof vent comprises a base, a rim, blades, a shaft on which the rim with the blades rotate; wherein the base, rims with the bushings, a cover and the blades are monolithically cast from plastic, the roof vent comprises two rims mounted one in the other and connected by a locking mechanism consisting in three protuberances on the bushings, the blades are installed in the upper and lower rims, with bearings being provided for installation of the upper and lower rims. The cover is made in the form of a hemisphere. The technical result consists in the improvement of technical and operational characteristics, as well as expanding the range of technical means stack. 3 files, 2 figures.

Vents are disclosed for covering openings on roofs. The disclosed vents cover openings on metal roofs and prevent moisture and objects from entering the opening while allowing air to pass therethrough. The vents disclosed herein also prevent moisture from entering the building through openings that can be created when the vents are attached to a roof. The vents include a cap, a collar, and a flashing configured to contact the roof. The vents can also include a screen placed between the cap and the collar. The collar can have arms formed on an upper portion thereof to facilitate connection of the collar to the cap. Feet can be formed on a bottom portion of the collar. Once the vent is fully assembled, the feet can be positioned underneath the flashing and can be the main connection point of the vent to a roof. Due to the design of this assembly, fasteners pass through the feet providing a sound and secure attachment to the roof. The feet are then covered from moisture, rain, and/or snow by a flashing, and the flashing is then secured by screws or other fasteners passing through the reinforcement material and through the flashing itself which provides a weatherproof seal.

Vents are disclosed for covering openings on roofs. The disclosed vents cover openings on metal roofs and prevent moisture and objects from entering the opening while allowing air to pass therethrough. The vents disclosed herein also prevent moisture from entering the building through openings that can be created when the vents are attached to a roof. The vents include a cap, a collar, and a flashing configured to contact the roof. The vents can also include a screen placed between the cap and the collar. The collar can have arms formed on an upper portion thereof to facilitate connection of the collar to the cap. Feet can be formed on a bottom portion of the collar. Once the vent is fully assembled, the feet can be positioned underneath the flashing and can be the main connection point of the vent to a roof. Due to the design of this assembly, fasteners pass through the feet providing a sound and secure attachment to the roof. The feet are then covered from moisture, rain, and/or snow by a flashing, and the flashing is then secured by screws or other fasteners passing through the reinforcement material and through the flashing itself which provides a weatherproof seal.

Roof drying processes and associated systems. A representative process includes drawing moisture-laden air from within the internal structure of a roof via a vacuum blower, a extraction insert and an extraction manifold, and removing moisture from the moisture-laden air via a dehumidifier. The dry air can be directed back into the roof through an injection insert and an injection manifold.

In a rooftop ventilator having a base housing, a lid operatively attached to the base housing, wherein the lid has a plurality of lid sides extending downwardly from a lid surface, and a ventilation fan positioned above the lid surface, a lid reinforcement device is provided, comprising corner reinforcing members attached to the corners of the lid. Each corner reinforcing member comprises a pair of side members flush with the lid sides, and one or more support fingers for receiving and supporting the lid sides. A corner cap is attached to the side members and overlaps the lid surface to retain the lid sides within the support fingers. The corner caps can also include cylindrical sleeves for engagement with a pair of hinge shafts extending from shaft support brackets attached to the base housing.

A ventilator for exhausting gas from an exhaust port, by utilizing wind or relative wind around and through the ventilator to create a reduced pressure zone at an open exhaust port. Tapered intermediate portions extend from the opposite ends of a centrally located throat portion within a body of the ventilator to a pair of opposite mouths through which gas can flow out through the ventilator from the exhaust port. Each mouth of the ventilator has an opening with an area significantly larger than the area of a flow path within the throat portion. The throat portion may be of constant internal cross-sectional area over its entire length.

A ventilator for exhausting gas from an exhaust port, by utilizing wind or relative wind around and through the ventilator to create a reduced pressure zone at an open exhaust port. Tapered intermediate portions extend from the opposite ends of a centrally located throat portion within a body of the ventilator to a pair of opposite mouths through which gas can flow out through the ventilator from the exhaust port. Each mouth of the ventilator has an opening with an area significantly larger than the area of a flow path within the throat portion. The throat portion may be of constant internal cross-sectional area over its entire length.

A vent sealing device includes first and second elongated tubular members having a funnel shaped cap along the upper surface for directing rain water into a vent pipe. A screen is positioned along the top of the device. A vent sealing system includes the vent sealing device and a roof attachment having an elongated base structure and a flexible sleeve protruding outward therefrom.