Abstract: A vent cap may include a hollow tube comprising a side wall defining at least one airway; a cap coupled to a first end of the hollow tube, the cap configured to deter one or more unwanted objects from entering the hollow tube through the first end; and a mesh material covering the at least one airway, the mesh material configured to allow air to pass through the at least one airway, the mesh material configured to deter the one or more unwanted objects from entering the hollow tube through the at least one airway. The vent cap may comply with one or more plumbing and/or building codes.

Abstract: An extractor hood including a housing, a vapor shield pivotably mounted on the housing, and at least one pivot bearing connecting the vapor shield to the housing. The at least one pivot bearing has a bearing axis in a vicinity of a center of gravity of the vapor shield.

Abstract: A rotatable vent assembly system for areas where breathable airflow is required is disclosed herein. The rotatable vent assembly system improves airflow in any structure where breathable airflow may be a concern, including but not limited to air vacuum vaults, valve vaults, water tanks, pressure reducing valve units, or other confined structures. The rotatable vent assembly system helps reduce frost accumulation within riser pipes during winter months and improves breathable air within confined spaces. By reducing the accumulation of frost, the potential for pipe breakage is reduced, also reducing maintenance and replacement costs to municipalities and property owners for burst pipes. Rotating the vent control component at the top of a riser pipe connected to a pipe system controls the flow of breathable air by increasing or reducing airflow within the pipe system.

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 waste heat recovery system is coupled to a flare or exhaust stack of, for example, a landfill gas treatment system, to recover at least a portion of the energy within the exhaust produced by the gas treatment system and provides the recovered energy either indirectly or directly to a secondary process, such as a wastewater treatment process, to thereby reduce the amount of energy needed to be otherwise input into the secondary process. For indirect transfer of energy the waste heat recovery system includes a transfer pipe connected between the exhaust stack of a primary process and a heat exchange unit while an induction fan connected to the transfer pipe operates to create a draft within the transfer pipe to facilitate movement of some of the exhaust gas from the exhaust stack of the primary process to the heat exchange unit.

Abstract: A chimney cap capable of being secured to a chimney and including a base; an annular collar member for insertion into a chimney, and having an outside circumference smaller than an opening of the chimney so as to be readily received therein; an annular shaped mesh member that is supported about the collar; a top supported over the base; and a plurality of support rods attached to the collar and for the purpose of supporting the annular shaped mesh member. The annular shaped mesh member has discharge openings for air flow and at least one elongated slot through which one of the support rods extends for securing the annular shaped mesh member. The elongated slot in combination with the one support rod enables adjustment of the diameter of the annular shaped mesh member.

Abstract: A bustle for use on a flare or an exhaust stack of, for example, a landfill gas treatment system, efficiently transfers gas from the stack to a waste heat recovery system associated with the landfill gas treatment system without substantially affecting the operation of the landfill gas treatment process. The bustle enables the heat recovery system to recover at least a portion of the energy within the exhaust produced by the gas treatment system and to provide the recovered energy either indirectly or directly to a secondary process, such as a wastewater treatment process, to thereby reduce the amount of energy needed to be otherwise input into the secondary process.

Abstract: Building vents and the associated vent stacks are an emerging security challenge. The vents may run the entire length of a building, providing a direct and substantially unobstructed path for gases and devices to be introduced into a building's interior. A security apparatus for the vent(s) of a structure may include a housing that may be positioned on a vent opening, such as a vent stack, and a gas monitoring apparatus and a motion detector. The gas monitoring apparatus may be used to detect a volatile gas in the vicinity of the housing and generate an alarm or signal when a gas is detected. The motion detector may sense the removal of the security apparatus from a vent and trigger an alarm.

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: The combination of a vent assembly with a conduit assembly bounding a flow space into which discharged combustion gases are exhausted. The conduit assembly has a first conduit length in which: a) combustion gases are communicated in a first direction in a first path between the flue outlet and a vent outlet; and b) backflow is communicated in the first path in a direction opposite to the first direction. The conduit assembly has a draft control assembly, with a conduit portion defining a flow passage in which backflow is diverted out of the first path. The draft control assembly further has a flow guide assembly that intercepts and guidingly diverts the backflow into the conduit portion to be exhausted.

Abstract: The present invention relates to a dripless chimney cap which prevents condensates from dripping down the outside of a chimney. The dripless chimney cap includes a cone-shaped top cap at the top of the chimney cap for stopping liquids and objects from falling into the chimney. A condensation drip pan in the shape of an inverted cone is positioned below the top cap and functions to catch and collect condensates, directing them toward the inside of the chimney flue. A mounting flange attaches to the chimney and secures the condensation drip pan and top cap to the chimney. A screen mesh located between the condensation drip pan and the mounting flange is designed to allow cross air flow.

Abstract: A chimney section and a chimney system for handling gases is disclosed. The chimney section is rounded but non-circular in cross sectional shape and includes at least one flange on one end of the section body. The chimney section may be formed from a single piece of material, wherein the section body and flange are integrally formed with one another. In the chimney system, the junction between two adjacent chimney sections may consist of a flange interface, which is formed by the adjacent flanges on opposing ends of two adjacent chimney sections. A V-band may be placed over the flange interface to further seal the interior of the chimney sections, and a sealant may be placed in various positions of the chimney system to hermetically seal the interior thereof from the exterior. In another embodiment of the chimney system, insulation is added to create an insulated chimney system.

Abstract: A crown-like structure sits atop a chimney or smokestack as a specially formed chimney cap wherein passing air is required to take a somewhat convoluted path, providing a Bernoulli effect to improve smoke emission draft. Like at least two of its predecessors, the crown has two roof-like canopies, one within the other, each having a series of curved, bent strips separated to permit the wind-flow to pass through. As a departure from the past, the number of sets of strips, or leaves, within each canopy is raised to optimize performance, the preferred number thereof being three.

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: An exhaust hood is provided that includes a chimney housing and a first vapor-collecting canopy pivotally secured to the chimney housing. The first vapor-collecting canopy is automatically movable between two end positions by a driving mechanism. The driving mechanism is in the form of a crank mechanism and includes a first crank disk and an electric motor for rotating the first crank disk. The first crank disk is torque-transmittingly connected by a push rod to the first vapor-collecting canopy.

Abstract: The present invention relates to a dripless chimney cap [1100] employed in the protection of a chimney flue from the natural elements of the outside environment. Said enclosure protects the opening of a chimney flue by acting as a barrier to entry while preventing condensates from dripping down the outside of chimney. These condensates are the result of the combustion process occurring within a heating source to which a chimney is connected. The dripless chimney cap [1100] includes a top cap [1110], which is a cone-shaped plate at the top of the chimney cap [1100] for stopping liquids and objects from falling into the chimney. A condensation drip pan [1120] in the shape of an inverted cone is positioned below the top cap [1110] and functions to catch and collect condensates which drip down from the top cap [1110]. It directs the condensates toward the inside of the chimney flue. A mounting flange [1130] attaches to the chimney and secures the condensations drip pan [1120] and top cap to the chimney.

Abstract: An exhaust gas discharging apparatus for connection to an exhaust gas fan including an exhaust gas nozzle comprising a duct device forming at least one exhaust passage that extends between first and second open ends. The duct device has at least one exterior duct wall forming at least two longitudinally extending bent wall portions that are distributed evenly about the periphery of the duct device with each bent wall portion sloping towards the longitudinal axis in the region of the second end. An annular cap or wind band is connected to the duct device and is disposed about and spaced apart from the second end of the duct device. The cap has a cap inlet located below the second end and outside the duct device and a cap outlet located outwardly from the second end in the longitudinal direction. Vertically extending wind deflecting panels are mounted on the duct device and extend horizontally outwardly and these panels extend vertically below the cap.

Abstract: A cast in place chimney form and installation method therefor. The cast in place form being of a relatively light weight construction and having physical and visual features that allow it to be used as a chimney cap form and to be left as an element of the finished chimney cap. The method of installation comprising the positioning of the form with relation to a step of chimney construction and the pouring of the chimney cap with the form being left in place.

Abstract: A chimney cover is provided which can accommodate any size chimney. The chimney cover comprises at least one panel assembly that is attached to the chimney by weaving a strap through slots formed in the ends of the panel and by connecting the ends of the strap to a fastener which can be adjusted to tighten the strap about the chimney. The chimney cover preferably is comprised of a plurality of subassemblies, each of which comprises two side panels and a middle panel. The first ends of the side panels are movably mounted within a guide structure formed in the middle panel to allow the side panels to slide in first and second directions within the guide structure. The overall length of the subassemblies can be adjusted by sliding the panels in the first or second directions. Once the length of the subassemblies has been fixed, the side panels are locked in place. The subassemblies are then placed in an overlapping relationship and adjacent side panels are attached at their second ends.

Abstract: An air flow sensor and impeller flow for use in industrial, agricultural and civil applications as well as in process control, emission control and measurement. The impeller is suspended for free rotation in a tube section and has a central core and a number of impeller blades extending from the core wherein at least one blade extends from the core to the adjacent inner wall of the tube section. The flow sensor is equipped with measuring means to measure the number of revolutions of the impeller per unit of time and to register an associated calibration speed of the impeller.

Abstract: An adjustable chimney cover is provided which can be adjusted in length and width to accommodate any size chimney. The chimney cover is comprised of a plurality of subassemblies, each of which comprises two side panels and a middle panel. The first ends of the side panels are movably mounted within a guide structure formed in the middle panel to allow the side panels to slide in first and second directions within the guide structure. The overall length of the subassemblies can be adjusted by sliding the panels in the first or second directions. Once the length of the subassemblies has been fixed, the side panels are locked in place. The subassemblies are then placed in an overlapping relationship and adjacent side panels are attached at their second ends. The second ends of the side panels are then attached to a chimney. In order to adjust the width of the chimney cover, additional side panels are used and/or the amount of overlap between the subassemblies is adjusted.

Abstract: A vent extension flashing assembly having a tubular outside vent stack cover which is secured to a substantially flat roof flashing base plate. The tubular outside vent cover has a diameter larger than the vent pipe to be covered by the vent extension flashing assembly. The assembly includes a tubular inner vent stack cover positioned within the tubular outer vent cover, wherein the tubular inner vent cover includes a diameter smaller than that of the covered vent pipe so as to fit within the covered vent pipe. When the assembly is positioned over the vent pipe, the vent pipe extends between the tubular outer vent cover and the tubular inner vent cover. A rigid expandable portion is formed on the innermost end of the inner vent cover and is capable of being expanded by a cam member to engage an inner surface of the vent pipe to hold the inner vent cover in place within the vent pipe.

Abstract: A furnace breathing filter protects the air inlet and exhaust gas outlet tubes of high-efficiency furnaces from plugging while enabling adequate gas flow. The furnace breathing filter comprises a filter section and a hub. The hub is designed to be inserted into and secured to a fitting on the outdoor end of the furnace tube. The filter section has a grid of openings that are sufficiently large to enable adequate gas passage but small enough to block entry of foreign materials into the furnace tube. The hub may be joined integrally with the filter section, or it maybe a separate piece that is removably assembled to the filter section. The hubs are made with different outer diameters to suit different sized furnace tubes. In an alternate design, the hub fits over the furnace tube fitting.

Abstract: An exhaust fan to be mounted on a roof and for exhausting spent gases from a building, including a centrifugal fan scroll casing with a centrifugal fan impeller mounted on an axle within the casing and having an axis of rotation at right angles to the side members of the scroll casing. A bifurcated stack including two generally parallel passageways is connected to the scroll casing so that the stack is upright and communicates with the outlet port of the scroll casing. A ring defining an annulus may be provided at the outlet end of the stack to induce ambient air to mix with the spent air exhausting from the bifurcated tubular member.

Abstract: A chimney cap for protecting the upper open end of a chimney flue from the ingress of undesirable elements, such as squirrels, raccoons and birds or the like, is disclosed. The cap comprises a housing having four perforated sides which are detachably connected to one another in succession, the four sides each being formed from a flat metal blank provided with slots at one vertical edge portion and upturned tongues at the opposite vertical edge portion, the tongues of each perforated side projecting through the slots of an adjoining perforated side to thereby secure the perforated sides to one another and present a four-sided enclosure. The foregoing abstract is neither intended to define the invention disclosed, nor is it intended to be limiting as to the scope in any way.

Abstract: Bird protector apparatus for attachment to the outlet end of a flue gas stack that emits flue gases into the atmosphere. The stack has a concentrically arranged outer annular member spaced from the inner stack for flow of gas therebetween. The protector apparatus prevents birds from alighting on the end of the stack as well as on the protector itself. The protector apparatus comprises a conical wire mesh screen of a size to preclude birds traveling therethrough and to freely allow flue gases to flow therethrough, and has a lower end opposed to an apex. A clamp attaches the lower end of the wire cone to the upper end of the stack, with the apex being axially aligned with the centerline of the stack. An apparatus can be included on the exterior of the wire cone to frighten birds from perching on the apex.