| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 454358000 | Having readliy movable air regulating louver, damper, or cover | 33 |
| 20080227382 | Ceiling Vent Air Diverter - A ceiling air duct diverter system comprising a box like housing with side walls and having an open top and at least one open side to divert air flow and a means for affixing the open top near a ceiling air vent. | 09-18-2008 |
| 20080254735 | Air flow control device with very tight close off - An air flow control device consisting of air foil designed vanes for accurate modulation of the air into and out of a space. This damper includes end seals in which the ends of the air foil control vanes are located. Upon closure of the vanes the end seals prevent the air from bypassing the vanes and a very tight close off is realized. | 10-16-2008 |
| 20090029642 | Damper assembly - A damper assembly, comprising: a support means defining a plurality of (air) openings; damper means mounted or connected to the support means in relation to the openings for the periodic closure and opening of such openings; a crankshaft means coupled to the damper means such that rotation of the crankshaft means is able to induce displacement of the damper positions to respective second damper positions and back to the first position for adjusting air flow through said openings. | 01-29-2009 |
| 20090149124 | Variable position low profile shutter valves - A method of mixing air in an HVAC system includes the step of simultaneously and differentially rotating the valve plates different degrees of rotation to differentially control air flowing in the housing. An assembly for controlling air flow in an HVAC system includes a mechanism for simultaneously and differentially rotating valves different degrees of rotation. The mechanism includes a control device on each shaft of each valve including a pin extending axially from each valve plate. A slide defines a plurality of serpentine slots with one of the pins slidably disposed in each of the slots. The slots each follow a path incongruent from one another for differentially rotating the valve plates in response to the slide sliding along the guide and the pins moving along the paths of the slots. | 06-11-2009 |
| 20090253367 | End seal for damper blades - End caps are attached to the end of each blade of a damper. When in the closed position, the end caps seal the space between the blade and frame. Sealing fins may extend from the end cap to further enhance the sealing capability. The end caps are easily replaced if worn and effectively prevent air from flowing between the frame and end of the blades. | 10-08-2009 |
| 20090280737 | EXHAUST VENT ARRANGEMENT AND METHOD OF OPERATING THE SAME - An exhaust vent assembly for a structure. The exhaust vent assembly can include a base supportable adjacent to the structure and having a raised rim defining an outlet of an exhaust flow channel and a cover moveably secured to the base for movement relative to the base between a closed position, in which the cover extends across the outlet substantially preventing exhaust flow through the outlet, and an opened position, in which the cover is moved away from the outlet to allow exhaust flow through the outlet. The vent assembly can also include a windbreak operable to prevent wind from moving the cover toward the opened position. The windbreak can include a first contour on the raised rim and a second contour on an adjacent edge of the cover. | 11-12-2009 |
| 20100130121 | AIR INTAKE SWITCHING DEVICE FOR PORTABLE AIR CONDITIONER - An air intake switching device for a portable air conditioner has a housing with multiple grid holes, at least one switching panel being mounted on the housing and at least one switching assembly being slidably mounted between the housing and the switching panel. The switching assembly drives the switching panel to slide relative to the housing to selectively allow the airflow passing through the housing. Therefore, the portable air conditioner is switched to perform an interflow air cycle or an independent air cycle between indoors and outdoors. A heat dissipating effect of the interflow air cycle and a cooling effect of the independent air cycle between indoor air and outdoor air are ensured. | 05-27-2010 |
| 20100159821 | EXHAUST WALL CAP VENT SLEEVE UNIT - An exhaust vent apparatus provides a wall vent sleeve including a rear opening and a front opening, and a moveable damper disposed within the wall vent sleeve at a recessed position from the front opening, wherein the moveable damper conducts gas flow in a direction from the rear opening to the front opening and prevents gas flow in a direction from the front opening and to the rear opening. | 06-24-2010 |
| 20100227545 | Air vent outlet cover and filter - This invention relates generally to an air vent outlet filter and cover and more particularly to an air vent filter and cover that adheres to the air vent outlet and that performs multiple functions including, but not limited to, a coarse particle air filter, to infuse a fragrance to the air being filtered and as a decoration. The air vent cover is attached to the air vent outlet by means of a flexible permanent magnet strip on the backside perimeter of the filter cover or by means of a sticky surface on the backside perimeter of the filter cover. | 09-09-2010 |
| 20110028082 | DRIVE MECHANISM FOR A DOWN DRAFT VENT SYSTEM - A drive mechanism for a down draft vent system comprising a vertically directed, retractable open framework, which can be moved between an extended position and a lowered position by means of a drive motor, comprising at least two switches for switching off the drive motor and at least one actuating element for actuating the switch. In this arrangement at least one switch is actuated by means of the at least one actuating element depending on a force (F | 02-03-2011 |
| 20110183600 | AIR CHECK VALVE SYSTEM AND METHOD OF MOUNTING SAME - An air check valve system configured to be mounted for fluid communication with a fan can include a ring having a generally circular inner diameter that defines an air passage through a plane of the ring. A first and a second flange can extend from the ring. A rod can have a first end mounted to the first flange and a second end mounted to the second flange. The rod can define a pivot axis. A first and a second damper plate can be mounted to the rod for rotation around the pivot axis between an open and a closed position. | 07-28-2011 |
| 20110269391 | CEILING VENT DIFFUSER - A device for altering the airflow pattern from a ceiling vent diffuser by obstructing openings in a region of the diffuser. The device comprises a flexible member that is secured to a diffuser vane by a hook member and two tabs. The hook member has two or more engagement regions which enable it to engage vanes on different manufacturer's diffusers. The first end of the hook member is either pivotally secured to the flexible member or is engaged in an adjustment mechanism thereon. The adjustment mechanism allows the second end of the hook to be situated in different positions relative to an interior edge of the flexible member so as to accommodate different diffusers. An extension detachably engages the flexible member to increase the size thereof to accommodate larger diffusers. | 11-03-2011 |
| 20120088445 | Air distribution unit - An air distribution unit comprising a housing having a receiving chamber, said receiving chamber is in communication externally and internally of said housing, a first air exhaust duct in said housing in communication with said receiving chamber and with said exterior for exhausting air from said receiving chamber to a lower portion of the housing, a second air exhaust duct in said housing in communication with said receiving chamber and with said exterior for exhausting air from said receiving chamber to an upper portion of the housing, an air supply duct in said housing having a first end in communication with said receiving chamber and a second end in communication with said first air exhaust duct, and a damper communicating with said receiving chamber for selectively routing air from said receiving chamber to either the first air exhaust duct or said second air exhaust duct. | 04-12-2012 |
| 20120289145 | DUCT COVER - A temporary duct cover for use in an HVAC installation processes. The temporary duct cover having a filtration portion and a closure member. The filtration portion being made from material which is air and water permeable. The closure member being configured to conform a duct. The temporary duct cover minimizes particulate infiltration to the duct while allowing moisture to escape from the duct, thereby inhibiting mold or mildew from forming in the duct. | 11-15-2012 |
| 20140065946 | Dormer Roof Vent - A roof vent is provided comprising a base with an opening for air inlet/outlet, wherein the base opening may have raised venting edges. The base is connected to a cover over the base opening including at least one louver for air flow and a front opening. Sloped side walls connect the base and cover. The front edge of the top of the cover has a lip angled down over the front opening. The lip reduces leakage into the vent. A mesh grill or cover can be included in the front opening. A rectangular strip with drainage holes can be included at the bottom of the front opening, to secure the mesh grill in place. The rectangular strip can include drainage holes. Shingles can be placed on the cover so the vent blends in with the roof. | 03-06-2014 |
| 20140106661 | ADJUSTABLE ROOF VENT - A passive vent for venting a building enclosure having an opening in a roof portion, the vent being adjustable for mounting on roof portions of different slopes. The vent has a base pivotally attached to a vent structure with a pair of pivot joints. The vent structure has a collar attached to a vent body having a cover. At least one gas permeable screen is positioned on the vent body between the cover and the collar. The base comprises a lower attachment structure for attaching the base to the roof portion over the opening. An aperture through the lower attachment structure permits gas to pass in to and out of the opening in the roof portion through the base. A wall including a pair of opposed curvilinear wall sections surrounds the aperture. The pivot joints define a pivot axis about which the vent structure pivots along a range of angles relative to the base. The collar is sized and shaped to overlap portions of the aperture surrounding wall to maintain a continuous wall between the collar and the aperture surrounding wall along the range of angles. At least one securement means secures the vent structure in one of the range of angles relative to the base. | 04-17-2014 |
| 20140148090 | AIR DUCT - An air duct includes a board defining an opening and a number of spaced plates pivotably mounted to the board along a lengthwise direction of the opening. Each plate defines a cutout in a first side. The plates are pivoted to be parallel to the board to cover the opening. The plates are pivoted away from the board to expose the opening, and the cutouts are operable to receive an end of an expansion card when the plates are pivoted to be perpendicular to the board. | 05-29-2014 |
| 20140342657 | AIR VENT - An air vent having a housing, a first control element and a second control element, wherein the housing forms a flow passage, wherein the first control element is supported on the housing so as to be rotatable about a first axis of rotation and the second control element is supported on the housing so as to be rotatable about a second axis of rotation, wherein the second axis of rotation is perpendicular to the first axis of rotation, wherein the first control element is connected to the second control element by a coupling element and the control elements are movable relative to one another. | 11-20-2014 |
| 20160033160 | VENTILATION SYSTEM FOR STORAGE COVERS AND METHOD OF USE - The present invention relates to a reliable, efficient, and low cost ventilation system for storage covers that improves the distribution of air flow and improves aeration of the particulate material and the method of installing the same. | 02-04-2016 |
| 454359000 | Including backdraft preventer | 8 |
| 20090029643 | Pressure relief valve for structure - A pressure relief valve for structure. A valve with a spoiler around its edge sits in a valve seat around a structure valve aperture, and is spring-loaded into a closed position. Storm wind entering the structure through a breached window, door, or other structure opening escapes through the valve, which opens when exposed to a pressure differential of approximately 1.5 psi. Lift created by storm wind impinging on the spoiler tends to urge the upwind side of the valve closed. The valve may incorporate a skylight. In the preferred embodiment, the shape of the valve was a spherical or spheroid section, and the spring-loading was provided by a plurality of spring assemblies disposed around the edge(s) of the valve. | 01-29-2009 |
| 20090081942 | LOW PROFILE ANIMAL RESTRICTING VENT FOR FLUID DISCHARGE CONDUITS - A vent assembly for attachment to a fluid discharge conduit of the type connected to a clothes dryer, room exhaust fan, or the like is adapted to reduce or prevent the trapping of dirt or lint as well as flapping or vibration of the door in windy conditions. A mount having an opening is received on the conduit and a door is pivotally received by the mount. The door is operable for displacement with respect to the opening between an open position and a closed position when engaged by a fluid, such as air from a clothes dryer, flowing through the discharge conduit. A hood is pivotally mounted over the door and mount opening, and is operable for displacement with respect to the mount when engaged by the door and/or by fluid flowing through the discharge conduit. | 03-26-2009 |
| 20090124191 | Stack damper - A damper comprising a duct defining an air flow path, opposing damper blades pivotally mounted within the duct, each damper blade having an end that is pivotally mounted in cantilevered fashion in the duct so that an opposing end is free to move within the duct, wherein each damper blade is planar in shape, cooperating flow straightening members disposed centrally in the air flow path, an air flow sensor for generating a signal cooperatively disposed between the flow straightening members, and an actuator for pivoting each damper blade within the duct in response to the signal from the air flow sensor to vary the damper blade position and thereby maintain a desired velocity of air exiting the damper. | 05-14-2009 |
| 20120264363 | Exhaust Vent - A new exhaust vent has a mounting plate that mounts onto an external wall of a building Attached to the mounting plate is a main body that has an aperture that extends between a rear face and a front face that is in fluid communication with an opening of the mounting plate. A flap is pivotally attached to the main body and moves between a closed position, where the aperture is blocked by the flap, and an opened position, where the flap extends away from the aperture. A seal surrounds the aperture when the flap is in the closed position. | 10-18-2012 |
| 20130196589 | EXHAUST VENT - An exhaust which comprises a mounting plate mountable onto the external wall of the building and having an opening therein. The exhaust vent also comprises a main body attachable to the mounting plate and having a rear face, a front face, and an aperture extending from the rear face to the front face in fluid communication with the opening of the mounting plate and the conduit. The exhaust vent also comprises a flap pivotally attached to the main body and movable between a closed position, where the aperture is blocked by the flap, and an opened position where the flap extends away from the aperture. Finally the exhaust vent comprises a first seal which surrounds the aperture when the flap is in the closed position, the seal being located on either one of the flap or the main body. This invention aims at improving air-tightness of the exhaust vent when in the flap is in the closed position. | 08-01-2013 |
| 20140242902 | GRAVITY SHUTTER - An exhaust air shutter assembly may include a housing having a dividing wall separating the exhaust air shutter assembly into an inside portion and an outside portion. An opening may be formed in the dividing wall and a frame may be mounted around the perimeter of the hole. Disposed on the frame may be a gasket that extends around the entire perimeter of the hole. The exhaust air shutter also may include at least one shutter flap mounted adjacent to the frame with a hinge such that the shutter flap can pivot between a closed position and an open position. When the shutter flap is in the open position, an air flow path exists from the inside portion of the exhaust air shutter assembly to the outside portion. When the shutter flap is in the closed position the air flow path is blocked. The shutter flap is configured to contact the gasket mounted to the frame when the shutter flap is in the closed position, thereby creating a seal between the shutter flap and the opening in the dividing wall. | 08-28-2014 |
| 20150345808 | Decorative Dryer Vent - A decorative dryer vent is provided including a vent body defining a passage between an inlet end for communicating with a dryer vent pipe and an outlet end, the vent body including a decorative exterior in the form of a decorative overlay covering the vent body. The steam that exits through the dryer vent adds to the attraction, allure or amusement of the decorative dryer vent. | 12-03-2015 |
| 20160169543 | SYSTEM FOR VENTILATING A STRUCTURE | 06-16-2016 |
| 454361000 | Internal damper | 4 |
| 20080311842 | HVAC air distribution system - An HVAC system including a first diverter valve configured to divert, in varying amounts, an airflow entering the valve out two different outlets, in a manner that does not create a substantial increase in backpressure due to the diversion or otherwise substantially restrict the general flow of air in the HVAC system. The system further includes a first sensor assembly configured to sense a first environmental condition that includes at least one of temperature and a phenomenon indicative of the makeup of room air, a control unit, and a user interface unit, wherein the control unit is in communication with the diverter valve and the first sensor assembly. | 12-18-2008 |
| 454363000 | Pivoted damper panel | 3 |
| 20090093210 | DAMPER SUITABLE FOR LIQUID AEROSOL-LADEN FLOW STREAMS - A flow control device has a duct section with a plurality of damper blocking elements, each having a major plane. The damper blocking elements are pivotably connected to the duct section and movable in a range that is limited to ensure that, when the duct section is mounted in a preferred orientation, the damper blocking element major planes always form an angle of at least 45 degrees from the horizontal throughout the range. The range is such that the plurality of damper blocking elements can selectively close and open the duct. The blocking elements can completely close the duct, for example, to block natural convection. | 04-09-2009 |
| 20130273831 | DAMPER VANE AND HOUSING CONSTRUCTION - A damper having a housing includes a rotatable damper vane therein constructed to minimize the passage of air between the vane and the housing when the vane is in a closed position. The housing includes a pair of opposed walls having a channel or flute therein adjacent outer edges of the vane when the vane is in the closed position. The outer edges of the vane terminate in domed or arcuate shaped surfaces that generally correspond with the channel. The arcuate shaped surfaces are a distance apart that is greater than a distance between the opposed walls such that the arcuate shaped surfaces are received in the channels when the vane is in the closed position. The housing also includes a pair of opposed sidewalls having a ridge therein at a location that aligns with an edge of the vane when the vane is in the closed position. | 10-17-2013 |
| 20150093985 | PASSIVE COOLING SYSTEM WITH AMBIENT FLUID COLLECTION - A passive cooling system routes air from an enclosure to an ambient environment, via a chimney effect, through one or more indirect pathways and re-directs environmental elements received from the ambient environment. One or more vanes are arranged within an interior space, such that the vanes collectively form one or more indirect pathways to the ambient environment. The vanes preclude environmental elements, including precipitation and particulate matter, from passing through the interior space and into the enclosure. Environmental elements are re-directed by one or more of the vanes, at least in part, to an exterior of the passive exhaust system. Dampers may be adjusted to control airflow through the passive cooling system and restrict environmental elements from entering the passive cooling system. Liquids received from the ambient environment may be re-directed into a reclamation system for use in a cooling system. | 04-02-2015 |
| 454364000 | Along roof ridge | 2 |
| 20100056038 | STATIC ROOF VENTILATOR - A roof ventilator including: a first module defining a first module passageway having a first passageway longitudinal axis. The first module including a first module louver support extending substantially parallel to the first passageway longitudinal axis and a first module louver for creating a draft within the first module passageway upon wind blowing onto the first module louver. The first module louver extending from the first module louver support, located peripherally relatively to the first module passageway. A second module attached to the first module, defining a second module passageway, in fluid communication with the first module passageway and defining a second passageway longitudinal axis. The second module including a second module louver support, extending substantially parallel to the second passageway longitudinal axis. A second module louver creates a draft within the second module passageway upon wind blowing onto the second module louver. The second module louver extending from the second module louver support located peripherally relatively to the second module passageway. A fastener operatively couples the first and second modules biasing the first and second module louver supports towards each other. | 03-04-2010 |
| 20140220882 | Ventilating roof - A ventilating roof is provided with a roof structure; a pair of spaced base members formed upwardly from top edges of the roof structure respectively, each base member including a plurality of top vent holes; and a ventilating ridge roll disposed on both the base members and the roof structure and being in a partial covering relation to the roof structure, the ventilating ridge roll including a plurality of upper and lower vent holes. The top vent holes are in air communication with both the upper and lower vent holes by natural convection. | 08-07-2014 |
