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| Number | Title | Issue Date |
| 7780509 | Quick-install foundation vent A foundation vent comprising a front frame and resiliently-flexible clips with tabs at their ends. The foundation vent can be quickly installed within a foundation opening by flexing the clips, placing them into the opening, and pushing the front frame until it seat... | 08/24/2010 |
| 7357709 | Metal vent A metal vent having an aperture for the passage of a fluid, a porous membrane sealing the aperture, wherein the components of the vent are assembled by an interference fit. ... | 04/15/2008 |
| 7232369 | System and method for providing heating, ventilation and air conditioning An under-floor, perimeter-based heating ventilation and air conditioning pressurized air delivery system for use in a space includes a ventilation module, to be located in the floor, a multi-deflection linear bar grille covering the ventilation module, for diffusing... | 06/19/2007 |
| 7189158 | Airflow control system A dual airflow control system for an environment having a first air zone and a second air zone. The system includes a first input device operable to generate a first input signal indicative of a desired airflow to the first zone and a second input device operable to... | 03/13/2007 |
| 7166024 | Ventilation member and vented housing using the same A ventilation member having: a breathable film transmitting gas passing through an opening portion of a housing in a state in which the breathable film is fixed to the opening portion; and a support including a supporting portion for supporting the breathable film a... | 01/23/2007 |
| 6302785 | Foundation vent with improved net free ventilation area An improved foundation vent with increased net free area is provided. The foundation vent has a frame that surrounds and defines an opening and a grill supported by the frame and spanning the opening. The grill has an inside face disposed on the inside of... | 10/16/2001 |
| 6042475 | Method and apparatus for controlling temperature and ventilation in an animal confinement building A method and apparatus for controlling temperature and ventilation in an animal confinement building comprising a series of semi-rigid panels that are suspended in cascading arrangement along a flexible cable. The cable is connected to a mechanism for ext... | 03/28/2000 |
| 5685290 | Combustion air kit A combustion air kit for providing a source of external air to feed a fire in a firebox is installed during new construction or as a retrofit unit into existing fireplaces. A masonry air vent brick having a hole therein air flow is included in the combust... | 11/11/1997 |
| 5558574 | Ventilator A slot ventilator has first and second base portions which in use are secured to a facia, for example a window frame, one at each end of an elongate opening therein. An elongate body portion is secured to the base portions by respective first and second p... | 09/24/1996 |
| 5522769 | Gas-permeable, liquid-impermeable vent cover A flexible, insertable vent cover is formed from a flexible, resilient material. The cover has a through passageway; a gas-permeable, liquid-impermeable membrane traversing the passageway; a diaphragm valve covering the membrane; and an annular securing r... | 06/04/1996 |
| 5505659 | Ventilation device A ventilation device is provided for location at the outer edge of a window frame and comprises side members defining inlet and outlet portions. The members provide opposing sockets to receive plates completing a closed duct in the device for air flow, th... | 04/09/1996 |
| 5421775 | Compartment ventilating apparatus A compartment ventilating apparatus prevents its indoor louver (22) from being subjected to the formation of dew, and, therefore can prevent the dew built up in its ventilation area in the form of ice, which enables the apparatus to keep a sufficient vent... | 06/06/1995 |
| 5249602 | Arrangement for flow control of gaseous and liquid media, particularly air The invention relates to an arrangement for controlling the flow of gaseous and liquid media, particularly air, comprising of a housing, a number of movable closing members shutting off in closed position the internal cross-sectional area of said housing ... | 10/05/1993 |
| 5194040 | Slot ventilators A slot ventilator (1) comprises an elongate facing strip (7) which is movable on parallel-motion links (12) between a closed position in which it seals a slot (4) in a backing member (3), and a forward, open position. The parallel-motion links (12) are pi... | 03/16/1993 |
| 4485730 | Ventilation unit The invention relates to a ventilation unit in a frame or the like, the said unit comprising a flow-duct and a slide having a leg which opens and closes the said flow-duct, the said slide being adapted to move at least partly back and forth in the said fl... | 12/04/1984 |
| 4383477 | Ventilator A ventilator is provided for the supply of untreated exterior air to a room. The ventilator has a valve seat (1), a valve body (2), means for connecting the ventilator to an exterior air duct (4) and operating means (6, 7) for resetting the position of th... | 05/17/1983 |
| 4359934 | Emergency air vent An air vent for emergency introduction of fresh air into a closed building. A dome cover is mounted on a spring-loaded plunger and released by a solenoid upon detection of poisonous gases, smoke or heat, or a lack of oxygen thereby opening the dome cover.... | 11/23/1982 |
