Abstract: A compact lightweight air filtration system is disclosed. The air filtration system includes a hydrophobic particulate/coalescing filter and a cleanable ozone converter housed in a housing with an inlet and an outlet. Air flowing from the inlet to the outlet passes through the particulate/coalescing filter element and then the cleanable ozone converter to remove particulates, aerosols, liquids, and ozone.

Abstract: A toilet ventilation system for removing unpleasant odors from a toilet efficiently. The toilet ventilation system has a manifold with an inlet that rests on an upper surface adjacent to the toilet bowl. The manifold has an outlet that is in communication with the inlet and the manifold has protrusions that extend from its sides. The protrusions are on cantilevered tabs. The toilet seat has hinges that have mounting portions being spaced apart and including mortices facing inward. The protrusions are designed to snap fit into the mortices and the tabs may be bent inwardly for easy removal of the manifold for cleaning. A fan is connected to the manifold to draw air through the inlet out of the manifold and exhaust the air to a remote location from the toilet and outside of the room where the toilet is located.

Abstract: A mosquito screen attachment denies access to mosquitoes from entering a vent pipe connected to a subterranean septic or other fluid filled tank. It includes a pipe joint section with mosquito screen pre-attached to the one or more vertical open faces of the horizontal portion. The lower opening on the vertical downpipe is simply attached atop the open vent pipe. Preferably the pipe joint is made of PVC which is also the typical material of the vent pipe. A rigid PVC mosquito screening is used, which is bonded or sealed to the edges of the one or more exposed holes of the pipe joint section. A robust material as opposed to a softer fabric screen is preferable to keep out bats or the beaks of birds attracted to hovering mosquitoes near the openings. The vertical orientation of the two vent holes helps keep debris from accumulating to clog the screened openings.

Abstract: The objective of the unit 10 is mainly to adsorb Hydrogen Sulfide gas (also known as H2S) and other gases including but not limited to Carbon Dioxide 26 from plumbing, sewer, and wastewater management system vents 21 thereby removing the odor and or greenhouse gasses associated with the air stream/gas 26. The unique “T” housing 12 shaped design, along with the unique perforated disc containment system 14 holds the filtration media 16 in the horizontal portion 120 of the “T” housing 12. configuration allows fresh air circulation 28 to blend with the odorous gasses 26 passing through the filtration media 16 within the containment chamber and reduces their concentration (PPM) thereby increasing the life of the unit 10. Having the inlet to the filtration media at the base of the vertical portion of the “T” 120 and two outlets at the distal ends 119 of equal or greater size and diameter as each other or as the inlet, also reduces Pressure drop across the media 16.

Abstract: Equalizing valve (1) comprising a duct (6) having an inlet section (7) and an outlet section (8), a seat (10) and a valve element (12) able to move between a closed position and an open position, characterized in that said duct is able to admit a flow in which, for any flow line (13) between said inlet section and said outlet section, the velocity vector (15) at a given point makes an angle with the velocity vector (14) in the inlet section which increases with the distance away from the inlet section, the angle between the velocity vector (16) in the outlet section and the velocity vector in the inlet section ranging between 80° and 150°, and in which the valve element, in the closed position, makes an angle of between 0° and 70° with the normal to the outlet section.

Abstract: An ventilating and air conditioning apparatus includes a circulating fan for sucking air from a sucking port open to a first indoor space and blowing the air through a blowout port into the first indoor space, a ventilating fan for sucking air from an exhausting port open to a second indoor space and evacuating the air to the outdoors for ventilation, and a refrigerant circuit formed of a compressor for compressing a refrigerant, a first heat exchanger for exchanging heat of air blown into the first indoor space by the circulating fan with the refrigerant, an expanding mechanism for expanding the refrigerant, and a second heat exchanger for exchanging heat of air blown into the second indoor space by the ventilating fan with the refrigerant. The compressor, first heat exchanger, expanding mechanism, and second heat exchanger are coupled together with pipes for the refrigerant to circulate therethrough in this order.

Abstract: A bathroom-ventilating fan with grille having a fan hosing, fan scroll, inlet ring, outlet collar, fan grille, sound insulation and electrical box. The external motorized assembly backwardly inclined type impeller is used. The bathroom-ventilating fan with grille has multiple speeds controlled by multiple capacitor and has the performance with 100 CFM airflow rate at or higher than 1 inches static pressure, 5 Sones or lower than 5 Sones of HVI (Home Ventilating Institute) certified sound ratings and 3.08 or higher than 3.08 CFM per watt power consumption at 0.1 inch static pressure as well as the fan has the performance with 50 CFM at 0.4 or higher than 0.4 inches static pressure, 1 Sone or lower than 1 Sone of HVI certified sound ratings and 1.36 or higher than 1.36 CFM per watt power consumption at 0.1 inch static pressure.

Abstract: A roof vent ingress prevention device includes a generally tubular base having a circumferential side wall, a lower pipe-engaging section and an upper section having at least two side vents formed therein, the side vents extending through the side wall for venting of gas from within the generally tubular base. A base slippage prevention device such as a circumferential bead or outward slant to the wall means is mounted on an outer face of the circumferential side wall intermediate the lower pipe-engaging section and the upper section of the generally tubular base and is operative to prevent the generally tubular base from slipping downwards into a roof vent on which it is mounted. Finally, a vent cap is mounted on the upper section of the generally tubular base, the vent cap including a plurality of vent openings formed therein for venting of gas from within the generally tubular base.

Abstract: A pluming vent cover is described herein which is easily manufactured and adapted to a roof on or off-site. A roof's pluming vent pipe requires a cover for both aesthetics and improved operation. In the preferred embodiment the pluming vent cover comprises an upper pyramidal cap, two rounded metal straps and a cone-shaped base. The operator can trim the lower ovoid continuous edge of the cone-shaped base to conform to the slope and pitch of the roof, shingles, or both. A method for producing this pluming vent cover is also described.

Abstract: An apparatus for venting several rooms having exhaust fans through existing roof openings made for existing ventilation systems, including turbine ventilators, roof ventilators, ridge ventilators and hip ventilators. The vent apparatus has two side panels, a bottom and two end panels. The apparatus is mounted under the roof ventilation system, using horizontal mounting elements disposed on the top edges of the end panels and side panels. When a ridge ventilator or hip ventilator is used, the end panels are formed with slots for fitting around the ridge rafter or hip rafter. The apparatus is mounted under the ridge ventilator, using mounting elements disposed along the slots on the end panels to attach the vent apparatus to the rafter. Each circular opening in the body had a stub extending downwardly for attachment of an end of the venting hose, which is connected to the bathroom exhaust vent fan. Removable covers can be placed into unused openings.

Abstract: A vent stack screen for portable toilet holding tanks is provided in the form of a cap designed to fit over the open end of an open air vent stack extending from the holding tank through the roof of a portable toilet. The cap is constructed from a tubular sleeve of plastic material having an inner diameter substantially equal to the outer diameter of the vent stack of a holding tank. The cap includes an inwardly extending annular lip formed at one end. A circular mesh of plastic screen material is secured within the tubular sleeve between the annular lip and a plastic locking ring received within the tubular sleeve.

Abstract: A wireless signal is propagated via a communication channel and received by a vent stop. The vent stop, upon receiving and decoding the signal, conducts an electric current to release the vent stop from a plumbing vent. In one embodiment, an intralumen audio signal is communicated to the vent stop and an adhesive joint securing the vent stop to the vent pipe is released upon passing an electric current through the joint. In one embodiment, an electric motor or solenoid releases the stop from the vent pipe. A spring or other energy storage device ejects the stop from the vent pipe following release.

Abstract: A roof vent ingress prevention device includes a generally tubular base having a circumferential side wall, a lower pipe-engaging section and an upper section having at least two side vents formed therein, the side vents extending through the side wall for venting of gas from within the generally tubular base. A base slippage prevention device such as a circumferential bead or outward slant to the wall means is mounted on an outer face of the circumferential side wall intermediate the lower pipe-engaging section and the upper section of the generally tubular base and is operative to prevent the generally tubular base from slipping downwards into a roof vent on which it is mounted. Finally, a vent cap is mounted on the upper section of the generally tubular base, the vent cap including a plurality of vent openings formed therein for venting of gas from within the generally tubular base.

Abstract: An apparatus for venting several plumbing pipes through existing roof openings made for existing ventilation systems, including turbine ventilators, roof ventilators, ridge ventilators and hip ventilators. The plumbing vent apparatus has two sides, a bottom and two removable end caps. End caps for use with a ridge ventilator or hip ventilator have slots for fitting around the ridge rafter. The apparatus is mounted in the roof opening made for the ventilation system, which is installed above it. When used with a ventilation system which has a ridge or hip rafter, the apparatus can be configured to have mounting flanges along the top of the sides for attachment to the roof decking, or can have mounting flanges along the slots on the end caps for attachment to the rafter. Each male adapter, which is inserted through an opening in the bottom of the apparatus, can hold the venting end of a PVC plumbing pipe. Removable covers are placed into unused openings.

Abstract: A durable, rotating, water-diverting, small animal and insect entry-prohibiting sewer system ventilation cap is that eliminates the influx of water into it.

Abstract: A toilet ventilation apparatus which can either be attached to an existing toilet in a structure as an after market product or manufactured in combination with a toilet. The toilet ventilator draws odors directly from the toilet bowl through an intake duct and exhaust manifold through at least one connector duct into a heat resistant draft box with said odor being expelled through an exhaust pipe into an outside environment. The toilet ventilator accomplishes this by incorporating the physics law of rising heat in order to create a draft to draw toilet bowl odors up and out. A motion detector switches on the heat source, possibly a light bulb, and a time delay keeps the heat source on and the apparatus functioning for a predetermined period of time. A draft could also be created by connecting to and utilizing the hot air in an attic. The exhaust manifold fits under the back of the toilet seat and rests under the toilet tank with spacers for added space and support of the tank.

Abstract: A durable, rotating, water-diverting, small animal and insect entry-prohibiting sewer system ventilation cap is that eliminates the influx of water into it.

Abstract: A portable apparatus which works in conjunction with an existing ceiling exhaust intake to more directly and selectively intake waste odor emanating either from a bed pan, or from a toilet having a conventionally mounted hinged toilet seat. The waste odor collection apparatus comprises: an upright tube having an upper end portion, a central portion adapted to receive a flexible hose, and a lower portion adapted to seat on a supporting surface; a hood carried by and above the upper portion of the upright tube, adapted to peripherally surround and cover the exhaust intake on the ceiling; and, a first flexible hose having a feed end portion adapted to removably attach to the central portion of the upright tube and a collection end which may be routed proximate to a source of waste odor. Another aspect of this apparatus provides for an odor collection wand which is used in conjunction with the flexible hose connected to the exhaust intake.

Abstract: A stack ban for sealing a pipe and boot extending from a roof of a building is disclosed. The stack ban includes a band of flexible material having a smooth inner surface and an outer surface. The inner surface has a circumference substantially equal to a circumference of the pipe and forms a seal between the pipe and boot. The stack ban is preferably secured in a place by a clamp threaded inside of the band and tightened during the installation process. The band is preferably made of neoprene rubber.

Abstract: A venting system for structures using a ridge vent for venting a conventional exhaust system associated with a structure through a conventional ridge vent. The venting system includes a ridge vent adaptor, which defines a mounting head at an upper end, and a pipe coupling at a lower end. The mounting head is configured to be received through an opening formed in the ridge of the roof. The mounting head defines two mounting flaps for securing the ridge vent adaptor to the roof of the structure. The mounting flaps are dimensioned to be concealed by the ridge vent when installed. The pipe coupling is provided for coupling a conventional pipe of an exhaust system into the ridge vent adaptor. A transition portion is defined between the mounting head and the pipe coupling, and is continuously increasing in cross-sectional area from the pipe coupling to the mounting head such that outlet of exhaust gases is not inhibited.

Abstract: A toilet ventilator apparatus including a toilet seat with an odor collection channel formed therein. Such channel terminates at an evacuation nozzle. Also included is at least one odor collection vent which is adapted for receiving unpleasant odors from the air within the vicinity of a toilet bowl. A vacuum is coupled to the evacuation nozzle of the toilet seat for transferring unpleasant odors contained within the air in the vicinity of a toilet bowl through the toilet seat to a location remote from the toilet bowl via a fan when energized. Further provided is a scenting mechanism for masking the unpleasant odors contained in the evacuated air. The scenting mechanism has an associated conduit with an outlet thereof situated adjacent the fan of the vacuum and a scent switch for allowing the air containing odor to be scented upon the depression thereof.

Abstract: A tank ventilation exhaust fan having the unique ability to provided positive exhaust on a continuous basis while diluting the contaminated air and vapors, being emitted by the tank, with fresh air at a ratio in excess of five to one. A mixing chamber within the fan housing allows the fan to mix fresh air with vapors from the tank and expel the mixture over several hours. An alternate embodiment allows for continuous dilution of the tank's vapors.

Abstract: An automatic forced air ventilation system for recreational vehicles, railroad cars or the like designed to be operated during commode flushing The system creates negative pressure in the holding tank to prevent obnoxious odors from back-flowing into the vehicle. The sewer gases are exhausted outside of the vehicle during flushing of the commode. A ventilation fan assembly suctions a vent pipe leading to the sewage holding tank. The fan assembly comprises a tubular header with a fan disposed within. A circuit selectively operates the fan. In the preferred embodiment the tubular header is mounted on the roof of the vehicle over the existing vent pipe. A flange extends from the header and secures the fan assembly to the roof of the vehicle. The fan comprises an impeller of a diameter slightly less than the internal diameter of the header and a direct current motor adapted to operate at the voltage provided by the vehicle.

Abstract: The disclosed invention describes a vehicle waste tank ventilation exhaust fan, having the unique ability to provided positive exhaust on a continuous basis while diluting the contaminated air and odor being emitted by the waste tank with fresh air at a ratio in excess of five to one. A vacuum is drawn on the tank when the flush valve is closed by a small fan located over the tank vent pipe. A mixing chamber within the fan housing allows the fan to mix fresh air with odor from the tank and expel the odorous mixture over several hours.

Abstract: An electric heating attachment for electrically heating the exterior portion of a sewer vent of a building to keep the vent from clogging from snow and/or ice and frost that may accumulate on the building roof. The attachment has an elongated rod insertable into the vent a with an electric heating tape extending along the length thereof. Laterally extending arms on an upper portion of the rod engage the top edge of the vent to limit the extent of the insertion of the rod into the vent. The section of the rod extending above the lateral arms terminates in a hoop portion having a portion of the heating tape extending therealong to heat the area immediately above the sewer vent to keep this area open to the atmosphere by melting the snow and/or ice above the vent.

Abstract: A self-ventilating toilet is provided with an air intake chamber superposed above a water discharge chamber. A tubular member leading to the water discharge is vertically disposed and extends through the air intake chamber and is provided with apertures to allow the water flowing in the tubular member to flow through the air intake chamber and clean the latter.

Abstract: An automatic air valve for a conduit, through which passes fluids and/or solids, which valve utilizes a freely-movable valve member to prevent the discharge of contaminated air therefrom into the environment and to permit the introduction of fresh air from the environment into the conduit when a negative pressure develops therein. The air valves may be disposed at either the terminus of or interposed within the conduit flow line of a duct system. The air valves include an interior filter that restrains foreign objects, such as insects and snakes, in the duct system from operatively interfering with the freely-movable valve member. Means is also included for preventing the interior filter to move or to be moved into a position wherein the interior filter may operatively interfere with the freely-movable valve member. The interior filters are nonplanar in shape, so as to provide a total air passage area that is substantially the same as the air passage area that is present without the interior filter.

Abstract: The waste material holding tank located within a portable, outdoor toilet cabana is vented to atmosphere by a vent pipe extending upwardly from the tank to the roof of the toilet cabana. A small, electrical blower fan is mounted upon the upper, open end of the vent pipe for sucking air from the holding tank and blowing the air to outside atmosphere. A solar energy panel is mounted upon the roof of the cabana near the fan and is electrically connected to the fan. The panel generates electrical energy in response to a predetermined level of sunlight for electrically energizing the fan. Thus, the fan circulates air through the holding tank during the items that the sun is shining upon the cabana, to reduce the solar heat build-up in the holding tank for reducing the generation of noxious odors caused by heat induced reactions in the waste material in the tank.

Abstract: Apparatus for establishing gaseous communication between a room of a building, wherein said room contains a toilet bowl, and a building conduit disposed within the building, said building conduit being in gaseous communication with the atmospheric gases outside of the building comprising: a toilet bowl having a water level forming a water trap, said toilet bowl including a flexible, water-impermeable, tubular member inserted completely through the water trap so that a first end of the flexible tubular member is disposed on a building conduit side of the water trap and a second end of the flexible tubular member is disposed on a room side of the water trap.

Abstract: A plastic sewer vent line extending through the roof of a building is provided with a defroster for preventing blockage of the vent line by freezing and the consequent back-up sewage gas into the building. The defroster is located above the roof and includes a metal pipe, e.g., of copper, having its bottom end coupled to the plastic sewer vent line and provided with an electric heating coil in contact with a portion of the exterior thereof. An outer shell is spaced outwardly from and surrounds the exterior of the pipe and has a top sealed to the pipe top and a bottom sealed to the roof to provide an annular providing an insulating effect and enhancing the effectiveness of the heating element. A heat limiting switch is provided to prevent overheating.

Abstract: A system for ventilating the toilet bowl of a water closet of the type having a standpipe in the flush tank thereof and wherein the lower end of the standpipe is connected to the conduit which extends between the flush tank and the flush ring in the toilet bowl and the upper end of the standpipe extends above the normal level of the water in the flush tank. The inlet of a suction fan communicates with the space above the level of the water in the flush tank and the outlet of the fan is connected to a suitable point of discharge for gases withdrawn from the toilet bowl.

Abstract: A system for eliminating odorous air from a bathroom stool of the type including a toilet bowl, a water tank connected by a discharge pipe to the toilet bowl, the water tank including a vertical open top overflow passageway connected to the discharge pipe so that water in excess of the desired level in the tank is dispensed into the toilet bowl and through which odorous air may be withdrawn from the toilet bowl, including a hollow open bottom vertical member positioned over the upper end of the overflow pipe, the sleeve lower end terminating below the normal water level in the water tank whereby a water seal is provided so that closed communication is established between the overflow passage and the sleeve, and an air pump having connection to the sleeve to move air from the stool through the overflow pipe and sleeve for remote exhaust.

Abstract: A ventilator for toilets is disclosed which includes an air duct to receive and remove the odorous air, an air suction device to establish the odorous air flow, a control for initiating and terminating the odorous air flow, and a sensor responsive to the presence of water in the overflow duct, so as to terminate the air flow at the moment the toilet is flushed.

Abstract: Ventilator apparatus to remove foul air and objectionable odors from a toilet comprising a vent duct manifold molded into the rear portion of the toilet bowl rim and communicating with a laterally extending coupling. The coupling communicates with a vent stack of the sewer in order to vent the manifold. The vent stack communicates with a blower which draws foul air out of the toilet bowl and discharges the air to atmosphere. The intake opening of the vent duct is positioned to prevent entry of water thereinto by a lip extending downwardly on the front edge of the vent duct.