Abstract: A roof ventilation system operable based on environmental parameters is disclosed. The system includes a vent, a fan, a solar panel, a battery and a controller. The vent is positioned within a field of a roof, and includes a first opening configured to allow airflow between regions above and below the roof. The fan is positioned to generate an air flow through the vent. The solar panel is positioned on the roof in a location such that the solar panel receives solar radiation. The battery is electrically connected to the solar panel. The controller is in communication with the fan, and is configured to drive the fan based on at least one environmental parameter.

Abstract: A passive venting device for venting enclosures comprising a base member, an intermediate splash member including a diverter, and a top, dome-shaped member. In a preferred embodiment, the diverter may be molded as a single unit of manufacture with the base member. The venting device allows air and other gases to escape from within an enclosure to be vented while preventing the incursion of moisture in the form or rain or snow into the enclosure.

Abstract: A baffled roll vent for covering the ridge slot of a roof for allowing ventilation from the space of a building below the ridge slot, the baffled roll vent comprising a unitary panel defined by a length and a width, said width terminating at discrete louver portions. The center hinge allows flexing of the panel to conform to the pitch of a roof. The baffled roll vent may be used with a fibrous mat placed under the louver portions to prevent entry of particulate matter from the outside environment.

Abstract: Highly efficient ventilation fans for exhausting air out from underneath roofs, and/or for being portable in use and application. The fan can include optimized airflow blades having a twisted configuration that can move at a rotational speed operation of up to approximately 500 rpm. The approximately 15 inch diameter twisted blades can be premolded on a hub that together form a single molded unit of plastic. They can also be fabricated using metal. The unit can be mounted in an exhaust outlet having a conical diffuser on or adjacent to a roof. Alternatively, the fan can be portable for use most anywhere there is a need for ventilation and moving of air. The blades can rotate by a solar powered motor, where the blades and motor can generate up to approximately 1040 cfm while using no more than approximately 16 Watts.

Abstract: A generally S-shaped vent is provided for a roof including a substructure having at least one ventilation hole and being covered by a plurality of tiles. The tiles form a finish layer having peaks and valleys. The vent includes a base assembly having a number of flange members and at least one venting member with a vent aperture. The flange members are coupled to the roof substructure at or about the ventilation hole. At least one cap member is coupled to the base assembly, overlaying the vent aperture and including an upslope end, a downslope end, first and second sides, and an arcuate portion extending between the first and second sides. First and second louvered portions of the first and second sides of the cap member provide a ventilating passageway through the vent. The vent substantially conforms to the peaks and valleys of the finish layer of the roof.

Abstract: An insulation block is utilized with a corresponding baffle vent having a transverse width that will span several roof rafters, as is provided for use with manufactured housing. The insulation block includes uniformly spaced vertical ribs that extend from one edge of the insulation block to the opposing edge thereof to stiffen the insulation block which is formed of vacuum molded polyvinyl chloride film. After the baffle panel is placed on top of the roof rafters, which is before the roof sheeting is applied, the insulation block is attached to the wall top plate with the top edge of the insulation block placed into engagement with the baffle vent. The top edge of the insulation block is configured to mate with the undulating configuration of the corresponding baffle vent, fitting between transversely extending stiffening ribs on the baffle vent, to prevent insulation from entering the soffit area.

Abstract: The roof vent shield is attached to the downslope side of an existing roof vent, to prevent the entrance of windblown moisture into the mouth of the vent. The shield includes an elongate panel disposed along the length of the vent, with the upper edges of the vent opening and panel forming a ventilation opening therebetween. The opposed ends of the panel include opposite vent attachment flanges, and the lower edge of the panel includes a roof attachment flange. The shield panel and its various attachment flanges may be formed of a single homogeneous sheet of material (galvanized steel, corrosion resistant steel, aluminum, etc.), or may be assembled from separate components at the time of manufacture. The shield panel is oriented at least generally normal to the plane of the roof when the device is installed, and may include reinforcing bends along its upper and lower edges for greater rigidity.

Abstract: A ridge vent, roof ridge vent installation, and method of installing a ridge vent is provided. Preferably, the ridge vent includes a ventilation material that has opposite longitudinally-extending sides and a longitudinally-extending central section that is transparent. The transparent central section simplifies and enables accurate placement of the vent on the roof ridge.

Abstract: A roof system for a grain storage structure. The roof system includes a plurality of enclosures defined between adjacent roof panel surfaces. Each enclosure includes opposed exterior and interior wall segments oriented at an angle relative to the panel surfaces.

Abstract: Baffled attic vents and methods of their use and manufacture are provided. The baffled air vent of this invention includes an elongated member having a roof facing side and an attic space facing side, a pair of longitudinal side portions, first and second transverse ends, and at least one central panel portion. The vent defines at least one channel on the roof facing side thereof, for directing ventilated air. The channel includes a bottom portion having an integral baffled surface thereon. The vent further has an installed, convective air flow reading, under a 5 Pa air pressure differential, of at least about 95 CFM. Further embodiments contain separation means for permitting the attic vent to be separated by hand in a transverse or longitudinal direction.

Abstract: An adjustable roof jack adapted for mounting on a flat or pitched roof. The roof jack is connected to a lower end of an air discharge duct from an air conditioning unit and to the top of an air supply duct in the roof. The roof jack includes an angular-shaped sheet metal lower frame member having a front side, back side, a first side and second side. A lower portion of the sides of the lower frame member is received around the top of the air supply duct. Also, the lower portion of the sides of the lower frame member is integrally formed into to an outwardly extending roof flange. The roof jack also includes an angular-shaped sheet metal upper frame member having a front side, a back side, a first side and second side. A top portion of the front side of the upper frame member is hinged to a bottom portion of the front side of the upper frame member.

Abstract: A ridge ventilator for covering an open ridge of a roof while promoting ventilation of a space beneath the roof. The ridge ventilator has a sectional body having a first side and a second side, a number of partitions extending across said body between said sides, as well as a first end and a second end. The vent body has a width between said sides to permit said body to be laid over and cover an open ridge in a roof formed at the peak. The body also includes a recessed middle portion in a top face of the body, the recess being sized and shaped to accommodate roofing cap shingles. The body also includes opposed raised and curved, in side view, air foil side sections; which have a grill to permit air to pass therethrough between a space beneath said roof and the outside, the air foil side sections being sized and shaped to create, in a wind passing over the air foil sections, a low pressure adjacent to the grill to facilitate drawing air out of the space.

Abstract: A roof ridge vent formed from a continuous, indeterminate-length, elongate strip of openwork material that has a pair of longitudinally-extending side edges each covered with a waterproof material. The edge coverings function as wind baffles and promote air circulation through the vent when wind blows over the roof ridge. The ridge vent is rollable lengthwise into a spiral roll for storage and shipment and is unrolled lengthwise during installation on a roof ridge.

Abstract: A single-piece vent baffle and method of installing a vent baffle. The vent baffle includes a main body portion and a tail portion and a first face and a second face. The main body portion includes at least one spacer extending from the first face. The vent baffle may be installed to an underside of a roof and to a wall plate by positioning the spacer adjacent the underside of the roof to create an air flow channel between the underside of the roof and the first face. The vent baffle blocks an opening between the roof and the wall plate while allowing ventilating air to flow through the air flow channel.

Abstract: An off-ridge roof vent includes a hood open along the sides and front and a rear flange for mounting the hood to a roof. A pair of side walls each includes lower flanges to mount to a flat roof and upper bent tabs that fit under the hood to provide a tight fit between the walls and hood. A front baffle wall extends upwardly from a flange and opening and extends under the hood and terminates in a channel to mount one edge of a screen and another channel is formed in a subtending wall from the hood to mount the other edge of the screen to prevent the entry of debris into the vented roof space. All of the flanges are connected and are in the same plane so that the vent may be attached to a flat roof.

Abstract: A device, system, and method for collecting grease on rooftop exhaust fans, comprising a gasket formed of sorbent material. The gasket is dimensioned for placement between an exhaust fan and a base for the exhaust fan. When placed between the exhaust fan and the base for the exhaust fan, grease is absorbed and retained by the gasket during operation of the exhaust fan.

Abstract: Ridge vents and methods of their use are provided. The preferred ridge vent includes an elongated flexible member having a central panel portion, a pair of lateral edges and a pair of transverse ends. A pair of vent openings are disposed proximate to said lateral edges. The central panel portion includes a plurality of support ribs for supporting the central panel portion above the roof. A pair of baffles is disposed laterally from the vent openings and the lateral edges. Each of the baffles is oriented in a first direction relative to the central panel portion for at least a period of time prior to installation and is oriented in a second direction relative to the central panel portion after the installation.

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 ventilating device for ventilating through a ridge, preferably through a top ridge of a roof, includes a ridge member configured extending longitudinally along and beneath the ridge. The ridge member has a rigid part that includes two opposed panels and a number of cross pieces extending between the opposing panels. The ridge member also has passages extending from a lower part of the ridge member to an upper part of the ridge member. In a first embodiment, the cross pieces extend from the lower part to the upper part of the ridge member transverse to a longitudinal direction of the ridge member, and ventilating passages are formed in spaces between the two opposing panels and between the cross pieces. In a second embodiment, the cross pieces extend between the lower part of the ridge member to the upper part of the ridge member parallel to a longitudinal direction of the ridge member, and ventilating passages are formed as holes penetrating the cross pieces.

Abstract: A passive venting device for venting enclosures comprising a base member, including an attachment portion and a vent structure for permitting gas and vapour to pass through the device; a cover member mounted to the base member so as to permit the flow of gas and vapour to the outside; and a precipitation baffle which is sized, shaped and positioned to interfere with the entry of precipitation from the outside. The device also has a ventilation pathway spaced from the roof so as to permit thick shakes or tiles to be installed right up to the device without interfering with ventilation.

Abstract: The invention relates to a bag filter device (12), which device enables collection and draining of particles of liquid from a gas, normally air, flowing through the bag filter (12). Such a bag filter (12) is normally used to trap solid particles from a gas flow, but where particles of liquid, in which there are for example salts or bacteria, are also trapped and possibly permeate the bag filter (12) and drip out on the downstream side thereof. Then the liquid may be carried further in the gas flow and have disadvantageous effect on equipment and surroundings. According to the invention such drawbacks can be avoided or reduced in that the filter material of a lower portion (18) and a bottom portion (19) in the continuation of the lower portion (18) of the bag filter (12) is formed in its entirety or in an outer filter layer (20) by a liquid-tight material. Possibly, the bottom portion (19) is provided with a liquid outlet (39), so that the liquid separated can collect and be drained from the bag filter (12).

Abstract: A two-piece apparatus available in varying widths for ventilating the attic space of a building with a pitched roof, comprising a base formed by a plate with angled tracks surrounding a opening therein to be first mounted over an opening in the roof, and a hood which covers the openings from water ingress and which is designed and arranged to slide into and be captured by said angled tracks without the use of additional fasteners. The hood contains a screened opening which faces the leeward side. Two-step installation allows the base to be fastened from the rooftop in locations internal to the vent.

Abstract: A rollable ridge vent includes an elongated panel having a pair of opposite ends and a pair of opposite sides, a plurality of first baffles depending from the panel and arranged to form a pair of first rows adjacent the sides of the panel, a plurality of second baffles depending from the panel and arranged to form a pair of second rows adjacent and at least partially overlapping the first baffles, with the first and second baffles being spaced from one another to provide a plurality of drainage spaces therebetween, a plurality of third baffles depending from the panel that are arranged in a sinusoidal pattern and disposed between the second rows of second baffles, and in which the ridge vent further includes a seal member at each end of the panel, with a generally triangular dowel formed in one of the seal members and a lug having a generally triangular socket with a constricted throat formed in the opposite seal member, the dowels and sockets being co-operable with corresponding dowels and sockets formed on

Abstract: A ridge vent for tile roofs. The vent includes first and second sub-flashing portions for spanning air gaps provided between the upper reaches of a roof deck and below a centrally located ridge beam. A plurality of ventilation apertures are provided in each of the sub-flashing portions. A top cap flashing is provided for attachment above the ridge beam. Included in the top cap flashing are a plurality of ventilation apertures defined by edge wall portions. A tile roof is provided, of the flat, low profile undulating, or of the S-tile (undulating) type. Tiles are provided in rows up to the edge of the sub-flashing. The gap between the top of the tiles and the bottom of the top cap flashing is preferably provided with a weathertight seal. Ridge cap tiles are provided in conventional stacked fashion running along above the top cap flashing.

Abstract: A passive venting device for venting a building comprising a base comprising (1) a vent structure for permitting gases to pass in and out of the building; (2) an attachment structure coupled to the vent structure for attaching the device; and (3) a gas-permeable screen sized, shaped and positioned to prevent objects from passing through said vent structure, and having an airflow-enhancing configuration for providing greater airflow area than screens of ordinary sloped configuration; and a cover mountable to the base so as to cover the vent structure and permit the free flow of gas. The gas-permeable screen is spaced from the attachment structure in a direction vertically away the roof.

Abstract: A ventilation system for an attic or rafter space that mimics the appearance of the roofing material and thus has little effect on the appearance of the building. In one aspect primary vents are installed in the roof deck below the roof tiles, and the roof tiles are mounted to as to provide air spaces in between them and thus allow air flow from the primary vents to the outside. In another aspect a secondary vent is constructed to look like the surrounding field tiles and is installed over each primary vent. One or more vent openings in the secondary vent and an opening in the primary vent conduct air between the attic or rafter space and the outside. The secondary vent has a frame with one or more vent openings and a cap covering each opening shielding the ventilating space. Frames are formed in one piece and are made to fit each different size and type of roofing tile. The caps and the frame are ribbed for rigidity.

Abstract: A roof ventilation apparatus provides a vent tile shaped like a roof tile itself, and thus is inconspicuous and unobtrusive when installed, and blends with the field and/or ridgeline tile. The base of the unit may be used to mark the opening, after which a hole is cut in the roof, roofing cement is applied to the base flange, and the base is secured in place. The unit cover is then placed over the base and the remainder of the roof tile application is completed.

Abstract: A vent device includes a rectangular configuration having a linear axis and edges forming a lift end and a no lift end. The no lift end has a predetermined thickness to thereby define a base cross section. The lift end has a predetermined thickness of at least twice that of the base cross section. The lift end has an opening for transferring air from the environment outside the structure to an opening communicating with its interior. The lift end may have at least two sets of layers to support the device at at least three locations having decreasing cross sectional height at the lift end, the interior position and the no lift end respectively. An optional pivot point permits the device to conform to the structure. Also optionally provided is a baffle or a cover filter to protect environmental particles.

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 rollable ridge vent includes an elongated panel having a pair of opposite ends and a pair of opposite sides, a plurality of first baffles depending from the panel and arranged to form a pair of first rows adjacent the sides of the panel, a plurality of second baffles depending from the panel and arranged to form a pair of second rows adjacent and at least partially overlapping the first baffles, with the first and second baffles being spaced from one another to provide a plurality of drainage spaces therebetween, a plurality of third baffles depending from the panel that are arranged in a sinusoidal pattern and disposed between the second rows of second baffles, and in which the ridge vent further includes a seal member at each end of the panel, with a generally triangular dowel formed in one of the seal members and a lug having a generally triangular socket with a constricted throat formed in the opposite seal member, the dowels and sockets being co-operable with corresponding dowels and sockets formed on

Abstract: A roof vent comprises a base defining an air outlet/inlet portion, a cover having at least one exterior louvre for air flow, a side wall connecting the base and cover, and an interior louver between the exterior louvre and the air inlet/outlet portion with at least one and preferably two strips having slats configured such that matter passing through the vent must substantially traverse the interior louvre. The interior louvre is preferably perpendicular to the exterior louvre. The interior louvre contacts the base and the cover to provide support along with the side wall. A supporting rib may be added for additional support. The cover preferably has a second exterior louvre. A second interior louvre is located between the second exterior louvre and the air inlet/outlet portion such that matter must substantially traverse the second interior louvre if it is to pass through the vent via the second exterior louvre.

Abstract: A vent device includes a rectangular configuration having a linear axis and edges forming a lift end and a no lift end. The no lift end has a predetermined thickness to thereby define a base cross section. The lift end has a predetermined thickness of at least twice that of the base cross section. The lift end has an opening for transferring air from the environment outside the structure to an opening communicating with its interior. The lift end may have at least two sets of layers to support the device at at least three locations having decreasing cross sectional height at the lift end, the interior position and the no lift end respectively. An optional pivot point permits the device to conform to the structure. Also optionally provided is a baffle or a cover filter to protect environmental particles.

Abstract: A roof vent suitable for a conservatory roof of the type comprising glazing bars supporting glazing panels therebetween, the roof vent comprises a surround mountable between a pair of glazing bars and a cover for the surround and hingedly connected thereto.

Abstract: A roof louver filter system for preventing snow from entering an attic of a building structure through a roof louver vent during inclimate weather conditions. The inventive device is comprised of an air permeable material that is formed into a U-shaped structure for being positioned within a roof louver. The U-shaped structure includes a front portion, a first side portion and a second side portion. The first side portion includes a first slanted edge and the second side portion includes a second slanted edge for conforming to the rear rim of the roof louver when installed. The inventive device is preferably constructed of a polyester fiber material thereby preventing water and insects from entering into the roof louver. The inventive device prevents snow from directly blowing into the attic of the building through the roof louver during inclimate weather conditions.

Abstract: A roof vent for obstructing snow from entry into a vented space of a structure or dwelling. The vent has a cover, support, and base. The base is adapted to form a passageway which connects the vented space to the environment. A barrier is also provided which is located within the passageway. The barrier permits air movement but causes snow to accumulate thereon which prevents accumulation in the vented space.

Abstract: A roll-form roof ridge vent having a plurality of hollow cusps and a reinforced nail line. The cusps space the upper surface of the vent from the underlying roof to provide a path of ventilation therebetween. The reinforced nail line permits the use of standard pneumatic roofing nail guns to apply nails to the vent and overlying cap shingles. The reinforced vent resists compression and prevents nail heads of nails driven into hollow cusps of the vent from sinking past the upper surface of the vent. The nail line reinforcement material can be a fabric, elastomeric or other type of material.

Abstract: A roof vent comprises two parts, a cover and a conduit. The conduit, with a pipeline already attached, can be easily connected to the cover, after the cover has been installed on a roof. The conduit will plug into the cover making installation easy. The vent includes a channel or moat which surrounds the outlet of the conduit. Thus, if during extreme weather conditions, moisture passes into the cover from outside through its opening and if it gets past the door flap, it will be trapped in the channel.

Abstract: A novel metal roof is described for passive ventilation of building structures. A ridge vent is described that provides enhanced ventilation of the roof, and provides for safer and economical installation of the metal roof ventilation system.

Abstract: An exhaust vent including a roof cap inlet and a roof cap outlet which are joined together without the use of fasteners and which defines a vent for use in venting gases from the inside of a building structure. The roof cap inlet includes a base portion defining an aperture and including a cylindrical extension extending below the base portion for attachment to a duct, and a rectangular extension extending above the base portion for preventing ingestion of water through the aperture. The roof cap outlet is formed with a semicircular portion defining a flow passage and includes a hemispherical portion defining a closed end for the flow passage wherein the design of the roof cap outlet provides increased strength against deformation, and the hemispherical and semicircular shape of the roof cap outlet facilitates flow of gases through the exhaust vent to the outlet opening.

Abstract: A static ventilator provided with a deformable corrugated portion is described herein. The static ventilator is provided with a tubular base to be installed to the roof, a sleeve to be connected to the tubular base and a cover to be installed to the free end of the sleeve. The tubular base is provided with a deformable corrugated portion enabling the tubular base to be installed to a sloping roof while allowing the sleeve to be positioned and maintained in a generally vertical orientation. The present invention is also concerned with a method for forming a tubular base for static ventilator provided with a corrugated portion.

Abstract: A roof vent comprises a base defining an air outlet/inlet portion, a cover having at least one exterior louvre for air flow, a side wall connecting the base and cover, and an interior louver between the exterior louvre and the air inlet/outlet portion with at least one and preferably two strips having slats configured such that matter passing through the vent must substantially traverse the interior louvre. The interior louvre is preferably perpendicular to the exterior louvre. The interior louvre contacts the base and the cover to provide support along with the side wall. A supporting rib may be added for additional support. The cover preferably has a second exterior louvre. A second interior louvre is located between the second exterior louvre and the air inlet/outlet portion such that matter must substantially traverse the second interior louvre if it is to pass through the vent via the second exterior louvre.

Abstract: A roof ventilation system of the type for venting air from under a roof and preventing water, debris and pests from penetrating the ventilation system and entering the interior of the structure is provided. The roof closure vent system includes: a structure having a sloped metal roof having a ridge slot formed along substantially the length of a roof ridge permitting ventilation from the interior under said roof to the exterior; and a ridge closure vent positioned adjacent each longitudinal side of said ridge slot extending substantially along the length thereof fastened between said roof and a ridge panel, in place of the ridge closure vent or in combination therewith is a eave closure vent connected beneath said roof substantially along the length of an eave of said roof.

Abstract: A roof construction includes spaced apart corrugated sheets held in spaced relationship by a plurality of spacers, the corrugated sheets both including apertures for dissipating heat contained in the hot air between the sheets into atmosphere and for guiding hot air from below the lower sheet into the space between the sheets for ultimate expansion and discharge into atmosphere. The apertures may be offset to prevent flow of moisture directly through the apertures and other devices may be utilized to prevent direct flow of moisture into the space below the roof assembly.

Abstract: A roof vent which is mounted on a roof to vent a clothes dryer. According to the roof vent, a screen is located to the outside of the vent and it is hinged thereto at a forward edge of the vent to completely enclose the space that is formed between the opening and the base plate of the vent. Because of this hinge, the screen may swing upwardly for easy cleaning. There is also a provision for locking the screen in its closed position to prevent rattling and to prevent dislodging by other forces, such as, animals or high winds.

Abstract: A single sheet of relatively stiff material is formed with a flat rim surrounding a raised area except along one open side or edge with the raised area having a low elevation so as to present a low profile when placed on the roof and is in air communication with an opening through the roof with the open edge providing an opening for air passage to the atmosphere and having a baffle at the open edge to prevent foreign materials and rain from entering and having tabs at the open edge for grasping the edge of a covering roof shingle. Preferably the vent is triangular in top plan so that the apex angle of the vent opposite the open edge can be easily inserted under a shingle between the nails which hold the shingle in place.

Abstract: An exhaust vent cover for closing the exhaust vent when the exhaust vent is not in use is shown. The exhaust vent cover includes a peripheral flange for attaching the cover to a surface and a continuous hollow body extending upwardly from the flange and having an open front as well as an air passageway communicating with this open front. The continuous hollow body further includes an overhang extending beyond the open front, a grill covering the open front to prevent access to the inside of the continuous hollow body, and a valve located inside the hollow body across the air passageway. The exhaust vent cover also includes a sloped upper surface to prevent the valve from being blown open.

Abstract: A user assemblable turbine air pump includes mainly a top lid, an axle assembly, a bottom seat plate, a blade supporting ring, three blade supports, four bottom seat supporting legs and a plurality of blades, these are classified and lapped in a styrofoam made box.

Abstract: A grease filter assembly is provided for absorbing grease discharged from a spout of a grease discharge vent extending from a roof. A support frame is mountable to the duct of the grease discharge vent and a grease absorbing pad is supportable upon the support frame in stationary position below the spout and in spaced relation from the roof. The support frame includes support rods mounted adjacent respective sides of the discharge vent duct and can extend beyond their respective duct sides to overlap at two corners of the duct to provide a supporting grid including the end portions of each of two rods extending from two corners of the duct. A grease absorbing pad is supported on the supporting grid disposed adjacent a side of the duct. The pad can be of sufficient length to extend beyond the duct side on both ends.

Abstract: A roof structure, which has a plurality of concrete tiles arranged in overlapping rows on a roof support structure, is provided with a roof ventilation device for venting the underside of the roof support structure. The device receives and integrates with a plurality of shortened tiles in an upper row so as not to disturb the appearance and continuity of the roof structure. A hollow upper portion of the roof ventilation device forms part of a ventilation path which extends from outside the roof structure to one or more apertures in the roof support structure and has a plurality of baffles disposed therein for preventing entry of rain water. A length of mesh mounted within an inside portion of the roof ventilation device at the back of the upper portion prevents entry of insects, vermin and debris, while foam strips mounted on the mesh seal the space above tiles in a lower row.