Abstract: The invention consists in a cover for a chimney, the cover comprising: a housing adapted to surround at least an upper end of a chimney, the housing having an expansion area for receiving emissions from the upper end of the chimney; a diffuser for diffusing the emissions from the upper end of the chimney into the expansion area; at least one air inlet for introducing air into the expansion chamber; at least one outlet for enabling air or emissions to be exhausted from the expansion chamber; wherein the housing is adapted such that emissions exiting the upper end of the chimney are diffused and expanded into the expansion chamber and a reduced pressure is created within the housing for drawing emissions from the upper end of the chimney into the expansion chamber.

Abstract: A protective vent line cap for protecting sanitary plumbing vent lines is described. The vent line cap includes an open bottom conically flared shroud that attaches to the vent line using a mounting strap having an adjustable strap clamp fastener and a mounting bracket. The mounting bracket is fastened at its top to the shroud and at the bottom to the strap clamp. The vent line cap is designed to be easily installed and removed using common hand tools. The vent line cap prevents foreign material from entering the vent line and subjacent plumbing while still allowing air to flow from the vent line as well as preventing rain water from entering sewer system.

Abstract: A chimney damper for round flues that includes a rigid peripheral frame surrounding an open window area, a cap moveable toward and away from the open window to selectively close and open the same and springs interconnecting the cap and frame resiliently urging the cap to an open position. The square, rectangular, or round frame includes a shirt adapted to form or connect to a cylindrical base which comprises a round open window and thus can be configured for use on a round flue. The springs are preferably torsion springs and are located within the cap assembly and the open window area defined by the peripheral frame. The cap is guided during its movement toward and away from the frame by the springs and during such movement the cap rotates a partial turn relative to the frame to which it is connected by the springs.

Abstract: A chimney cap includes an intake pipe extension and an exhaust pipe extension; each extension includes an opening, the exhaust opening being disposed above the intake opening. The cap further includes solid sidewalls surrounding the intake opening and a diffusion plate disposed over the intake opening and below the exhaust opening.

Abstract: A vent sealing device includes an elongated tubular member having an inner tube with a collar at the upper end of the inner tube, and a cap having an upper interior surface configured to receive the inner tube assembly, a lower interior surface configured to receive said outer tube, and a screen configured to remove debris positioned along the top of the assembly. A vent sealing system includes a roof attachment unit that includes an elongated base structure having an opening that includes a flexible sleeve protruding outward therefrom.

Abstract: A damage prevention housing for a roof pipe may include a hollow body having an interior dimensioned to enclose a roof pipe on a roof, the hollow body having an open proximal end suitable for positioning over the roof pipe and a partially closed distal end dimensioned to preclude access by rodents but allow movement of gases therethrough. The hollow body may further include an aperture positioned adjacent to the proximal end for allowing liquids and gases to move through the aperture and a fastener for securing the hollow body in a fixed position relative to the roof pipe and the roof.

Abstract: A chimney cap includes an intake pipe extension and an exhaust pipe extension; each extension includes an opening, the exhaust opening being disposed above the intake opening. The cap further includes solid sidewalls surrounding the intake opening and a diffusion plate disposed over the intake opening and below the exhaust opening.

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 chimney tee cap retainer assembly comprising a cap, a first member comprising a guideway extending in a longitudinal direction, the first member connectable to the cap using a first fastener, a second member having a sprung end portion, the sprung end portion for releasably engaging a chimney surface, the second member adjustably engaged with the guideway using a second fastener, a third member having a sprung end portion, the sprung end portion for releasably engaging a chimney surface, the third member adjustably engaged with the guideway using a third fastener, and the second member and the third member each having a second member portion and a third member portion each extending normal to the first member and each extending in the same axial direction.

Abstract: An omnidirectional vent cap for venting holding tanks is provided. By providing a 360 degree venturi channel, the present invention can use a small movement of air to reduce the air pressure above the exhaust port to draw out vapors or gasses. Since the device is symmetrical about the central axis the movement of air can be from any direction relative to the device.

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 vent hood and flashing assembly for use on a metal roof. A vent hood overlies and is joined to flashing. A cover and a screen overlie an upper end portion of the flashing to exclude rain, snow and pests. The flashing includes a resilient, flexible, water-repellant, flexible flange that extends outward from, and is attached to, a lower end portion of the flashing and a flexible, ring seal that overlies an upper surface of the flange. The assembly can be placed over a projection through an opening in a metal roof such that the cover and screen overlie an upper end of the projection and with the flashing surrounding the projection, and the flange can be bent to sealingly conform to the roof surface and secured thereto by fasteners.

Abstract: A chimney damper for round flues that includes a rigid peripheral frame surrounding an open window area, a cap moveable toward and away from the open window to selectively close and open the same and springs interconnecting the cap and frame resiliently urging the cap to an open position. The square, rectangular, or round frame includes a shirt adapted to form or connect to a cylindrical base which comprises a round open window and thus can be configured for use on a round flue. The springs are preferably torsion springs and are located within the cap assembly and the open window area defined by the peripheral frame. The cap is guided during its movement toward and away from the frame by the springs and during such movement the cap rotates a partial turn relative to the frame to which it is connected by the springs.

Abstract: An exhaust flue cap and filter device for a gas fired appliance in communication with an exhaust flue opening having an outer pipe and a coaxial liner. The device includes a tubular cap with an open lower end, an opposed open upper end, and a plurality of ventilation holes wherein the cap is receivable over the flue opening. A removable top is attached to and closes the open upper end of the tubular cap. A filter tray having a smaller diameter than the tubular cap includes a ledge extending radially inward from the tray. A removable catalytic converter filter insert within the tubular cap is supported on the ledge.

Abstract: A chimney cap provides not only protective features of conventional chimney caps, but may also provide energy production. The chimney cap may include one or more wind turbines that may capture wind energy and, with associated generators, may convert the wind energy to electricity. The chimney cap may also include one or more solar panels which may capture solar energy and convert that energy into electricity. A control box may receive the electricity from the generators and the solar panels and may provide the energy to a home, business, a storage device, the electric grid, or the like.

Abstract: The invention consists in a cover for a chimney, the cover comprising: a housing adapted to surround at least an upper end of a chimney, the housing having an expansion area for receiving emissions from the upper end of the chimney; a diffuser for diffusing the emissions from the upper end of the chimney into the expansion area; at least one air inlet for introducing air into the expansion chamber; at least one outlet for enabling air or emissions to be exhausted from the expansion chamber; wherein the housing is adapted such that emissions exiting the upper end of the chimney are diffused and expanded into the expansion chamber and a reduced pressure is created within the housing for drawing emissions from the upper end of the chimney into the expansion chamber.

Abstract: An inlet and/or outlet air hood comprising vertical storm louvers is provided that is particularly well suited for use on a Mobile Offshore Drilling Unit and other marine vessels, although its use is not so limited. The hood may comprise a basic cube shape, which affords a smaller projected footprint than conventional round- or mushroom-shaped hoods and may incorporate an internal flow shaper, such as an inlet/outlet bell, to reduce airflow resistance. In addition, the hood may be configured to incorporate an internal valve or baffle to create a watertight closure.

Abstract: An apparatus for a damper cap for a chimney flue includes a top plate having dimensions conforming to a top of the chimney flue. A bird and animal screen is joined to and extends from a bottom of the top plate. The screen has dimensions for insertion into the chimney flue. A rod joined to a center of the top plate extends downward into the chimney flue. A support structure is secured to an interior of the chimney flue. A mechanism is joined to the support structure and the rod for moving the rod in a vertical direction. In an open position the top plate is above the chimney flue to allow smoke to exit and the screen restricts birds and animals from entering. In a closed position the top plate is proximate the chimney flue restricting airflow into and out of the chimney flue and the apparatus is retracted into the flue.

Abstract: An exhaust flue cap and filter device for a gas fired appliance in communication with an exhaust flue opening having an outer pipe and a coaxial liner. The device includes a tubular cap with an open lower end, an opposed open upper end, and a plurality of ventilation holes wherein the cap is receivable over the flue opening. A removable top is attached to and closes the open upper end of the tubular cap. A filter tray having a smaller diameter than the tubular cap includes a ledge extending radially inward from the tray. A removable catalytic converter filter insert within the tubular cap is supported on the ledge.

Abstract: A chimney sealing cap has a standard cap and a one-piece crown. The single-piece crown is directly attached to a chimney casing. The crown has a hole through which passes a chimney pipe. Mechanical fasteners are use to secure the single-piece crown onto the chimney casing and the standard cap is slipped over and fastened onto the single-piece crown using mechanical fasteners.

Abstract: A chimney termination cap is provided with a body having a perimeter sidewall with a lower region adapted to be mounted to a chimney. The body has an opening for venting the chimney. A lid is mounted to a top of the body. A tray is mounted within the body for collecting precipitation. One of the body and the tray includes a drainage aperture for draining the precipitation from the tray. In one embodiment, the chimney termination cap includes an integrated slip-sleeve configured to receive a chimney flue or vent pipe.

Abstract: A chimney damper that includes a rigid first peripheral frame surrounding an open window area, a cap moveable toward and away from the open window to selectively close and open the same and springs interconnecting the cap and frame resiliently urging the cap to an open position. The springs are connected at the upper ends thereof to second rigid frame. The cap is mounted on the second frame and the latter is allowed to pivot relative to the cap. The springs and the arrangement thereof are such as to cause the second frame to rotate relative to the first frame during opening and closing of the damper with the rotation being about one quarter turn. An articulated link interconnects the first frame and coupling between the second frame and the cap so as to prevent pivoting of the cap when moving the cap from one to the other of an open and a closed position.

Abstract: A chimney termination cap is provided with a body having a perimeter sidewall with a lower region adapted to be mounted to a chimney. The body has an opening for venting the chimney. A lid is mounted to a top of the body. A tray is mounted within the body for collecting precipitation. One of the body and the tray includes a drainage aperture for draining the precipitation from the tray. In one embodiment, the chimney termination cap includes an integrated slip-sleeve configured to receive a chimney flue or vent pipe.

Abstract: A fireplace chimney cap includes a body having first and second apertures in fluid communication defining a first cavity therebetween. The first cavity is configured and disposed to receive combustion air through the first aperture, then through the second aperture for delivery to a fireplace combustion chamber. The body has third and fourth apertures in fluid communication defining a second cavity therebetween. The second cavity is configured and disposed to receive combustion gases from the fireplace combustion chamber through the third aperture, then through the fourth aperture for exhausting exterior of the body. The first and second cavities are fluidly separated from each other. The first and fourth apertures are configured and disposed to provide a pitot effect to more readily draw both combustion air into the first cavity and combustion gases into the second cavity in response to the first aperture disposed upwind and fourth aperture position disposed downwind.

Abstract: The use of the High Wind Bio-Mass Cap helps with the ventilation of corn or pellet stoves, inserts, or fireplaces in a high or low wind area. You attach a High Wind Bio-Mass Cap to the end of a pellet or corn vent pipe where it terminates at a manufactures specified location. You may attach this cap as low as 12? to the ground and it can face either horizontal or vertical. The cap increases the flow dynamic by creating a low pressure area at the exit of the vent pipe. By lowering the pressure at the end of the pellet or corn pipe it lowers the pressure on the ventilation motors of any of the units, which will possibly extend the life of the stove/units ventilation motor. Being only 12? from the ground and facing horizontal this is the only cap that will keep a breeze from creating a possible back draft.

Abstract: An inlet and/or outlet air hood comprising vertical storm louvers is provided that is particularly well suited for use with on a Mobile Offshore Drilling Unit and other marine vessels, although its use is not so limited. The hood may comprise a basic cube shape, which affords a smaller projected footprint than conventional round- or mushroom-shaped hood and may incorporate an internal flow shaper, such as an inlet/outlet bell, to reduce airflow resistance. In addition, the hood may be configured to incorporate an internal valve or baffle to create a watertight closure.

Abstract: A manufactured chimney cap is disclosed which provides a weatherproof long lasting enclosure that is designed in such a way so as to divert water away from a centrally integrated chimney flu and off of the chimney cap itself, being encased in a decorative weather-proof material such a aluminum siding, and which is easily installable by one contractor of ordinary skill in a short period of time.

Abstract: A plastic chimney cap is molded in one-piece from either a thermoset or a thermoplastic resin. The chimney cap has a wall extending continuously around a closed-circuit. The wall interior surface defines an interior space. A plurality of vent holes through the wall communicates with the interior space to vent combustion gases. A roof is attached to the upper edge of the wall. A flange is disposed outside the lower edge of the wall and has a perimeter extending completely around the wall. A shoulder connects the flange with the wall. Thickened reinforced regions with threaded holes and mounting screws are spaced apart around the flange perimeter for fastening the chimney cap to the flue. The interior surfaces can be coated with a metallized coating for heat resistance.

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 exhaust pipe cover adapted to resist wind-induced uplift and entry of any accompanying and/or independent rain, snow, dirt, dust, and/or other foreign matter, into the exhaust pipe and communicating engine, wherein such a device may be retrofitted to existing vertically-disposed exhaust pipes extending from engines incorporated into machinery such as, for exemplary purposes only, tractors, trucks, irrigation motors, generators, and the like.

Abstract: An exhaust pipe cover that can be placed over the exhaust pipe of a truck or other vehicle that has a vertically oriented exhaust pipe. The purpose of the exhaust pipe cover is to prevent precipitation and dirt from entering into the exhaust pipe during the time that the truck or other vehicle is not being used. The exhaust pipe cover is to utilize a main section which has one end closed and the opposite end open which is to be placeable over the exhaust pipe. This main section can be shortened for shorter length exhaust pipes. This main section can be attached to an extension for longer exhaust pipes. The extension can be shortened by a longitudinally operated drawstring arrangement mounted within the extension so as to customize the cover to precisely the length of exhaust pipes on which it is being used.

Abstract: A weather cap for use with a vent cap. The weather pipe includes a top surface portion which is mounted at an angle in relation to a side wall extending downwardly from the top surface portion. The weather cap also includes a device for securing the cap structure fixedly to the pipe, and a device for connecting and retaining the cap structure to the securing device.

Abstract: A chimney damper and cap system containing a support base securable to the top of a chimney flue, an increased air flow bracket containing a support tube opening, an inner support tube secured to the bottom of the chimney cap, an outer support tube into which the inner support tube is slidably engaged, an inner and outer spring substantially contained within the inner and outer support tube, wherein the inner spring is secured to the chimney cap, and a damper cable secured to the inner spring, wherein the outer spring biases the chimney cap to an open position.

Abstract: A combination chimney top spark arrester and damper is provided wherein the damper is positioned within the spark arrester. The damper moves between a closed position in which it covers the top of the chimney flue and an open position in which it is raised above the top of the chimney to allow full, unobstructed flow of flue gases. An actuator includes a counterweight urging the damper into its open position. The actuator allows the user to close the damper and to apply a tensioning force to the closed damper to resist vibration and chattering. The device is quickly installed and fits several different chimney sizes.

Abstract: A removable exhaust pipe cover for placement over an exhaust pipe opening of a non-running internal combustion engine for excluding water and debris from entering the pipe. The cover is an elongated tubular member of water repellant material which is preferably flexible to a degree, the flexibility being for allowing constricting and sealing against the pipe when in use, and for compact folded or collapsed storage of the cover when not in use. The tubular cover has a closed top end, an oppositely disposed open bottom end, and an annular sidewall extending between the two ends. The bottom open end of the cover, in at least one embodiment, has a elasticized gathered hem which holds the cover tightly closed about the exhaust pipe with the closed top end and upper portion of the sidewall covering and thus closing the open end of the pipe when installed.

Abstract: A chimney damper is provided with a locking mechanism which prevents the chimney damper from closing in the event of a chimney fire.

Abstract: A chimney damper and chimney cap system comprised of a support base securable to the top of a chimney flue, a bracket assembly and spring assembly secured to the support base, a chimney cap secured to the bracket assembly wherein the bracket assembly bias the chimney cap to an open position, a damper cable secured to a pin secured to the bottom surface of the chimney cap, a support arm secured to the support base for supporting the damper cable within the chimney flue and a lever assembly secured to the support arm to open the chimney cap if it is stuck shut.

Abstract: chimney damper and chimney cap system comprised of a support base securable to the top of a chimney flue, a support frame secured to the support base extending above the support base, a chimney cap secured to the top of the frame, a bracket and spring assembly secured to the bottom portion of the chimney cap, a chimney damper cover plate secured to the bracket and spring assembly wherein the bracket and spring assembly biases the cover plate to an open position, a damper cable secured to the bottom portion of the chimney damper cover plate and a support arm secured to the support base for supporting the damper cable within the chimney flue.

Abstract: A chimney damper and chimney cap system comprised of a support base securable to the top of a chimney flue, a bracket and spring assembly secured to the support base, a chimney cap secured to the bracket and spring assembly wherein the bracket and spring assembly bias the chimney cap to an open position, a damper cable secured to the bottom portion of the chimney cap and a support arm secured to the support base for supporting the damper cable within the chimney flue.

Abstract: An apparatus arranged to orient a closure cap over an entrance opening of a chimney stack to prevent a fire from projecting through the stack with the apparatus to include a spring-biased member and a fusible link permitting release of a plug member to secure the plug member within the chimney stack upon release of the fusible link.

Abstract: A chimney cap for installation on a chimney, comprising a lid assembly, a bracket for supporting the lid assembly, and revolving clamps pivotally connected to the bracket for releasable attachment to various dimensions of chimney flue tiles. The clamps are pivotable for rotation between a first position for accommodating a first dimension of chimney flue tiles and a second position for accommodating a second dimension of chimney flue tiles, the second dimension being larger than the first dimension. The clamps each comprise at least two oppositely disposed spring loaded cam action toggles for gripping opposite sides of the chimney flue tiles irrespective of the thickness of the tiles.

Abstract: A chimney cap to selectively cover the outlet from the flue of a chimney which includes an open frame of selected geometric configuration located at the top of the chimney flue around the outlet, a cap to substantially cover the opening defined by the frame, bias device to bias the cap to a position separated by the frame, where a seal is provided to seal the cap and the frame when the cap is located contiguous to the frame. A guide arrangement can be provided to guide the cap toward the frame to selectively locate the seal of the cap and seal surface of the frame. A draw device can be provided to pass through the chimney flue to allow the cap to be drawn to engagement with the frame and a latch can be provided to receive the draw device to hold the cap in engagement with the frame against the bias force.

Abstract: A chimney cap and flue damper supported for vertical movement on the upper end of a chimney liner with an operating cable extending downwardly to the fireplace opening to effect opening and closing movement of a hollow insulation filled sheet metal closure member. The cap is supported by a support assembly having a plurality of radially expandable turnbuckles which are anchored in sockets formed in the chimney liner. The operating cable is provided with a removable weight which is sufficient to overcome a spring which holds the closure member in open position.