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| Number | Title | Issue Date |
| 8021218 | Linear travel air damper A damper suitable for use in a refrigerator provides for linear motion of a damper plate toward and away from a damper seat. The damper plate may be driven by an axial lead screw attached to a small DC motor and may employ a non-foam gasket to reduce water absorptio... | 09/20/2011 |
| 7566264 | Small duct high velocity damper assembly A SDHV damper assembly and methods to assemble and install the SDHV damper assembly are disclosed. The SDHV damper assembly includes a first damper housing half comprising a substantially cylindrical tube having a first open end and a second open end. The SDHV dampe... | 07/28/2009 |
| 7513823 | Linear VAV box A VAV box includes a housing formed by a top wall, a bottom wall, and a pair of vertical side walls. A blade is mounted for rotation about a vertical axis within an air flow passageway defined by a hollow interior of the housing. A first protuberance formed on an in... | 04/07/2009 |
| 7497772 | Quick change restrictor plate A “quick change” restrictor assembly that allows quick rebalancing of flow-pressures within a duct system. The invention comprises a removable restrictor plate, a branch circuit for receiving the plate, and a means for retaining the restrictor plate to the branc... | 03/03/2009 |
| 7434413 | Indoor air quality and economizer control methods and controllers Supervisory controllers, and methods, for use in a coordinated IAQ and economizer system. Various control objectives are defined and met. Some illustrative control objectives include economizer control, sequencing of economizer free cooling with compressor driven co... | 10/14/2008 |
| 7431641 | System for controlling distribution of air to different zones in a forced air delivery system Apparatus for controlling the delivery of air in a forced air distribution system having a source of air under pressure (4), a duct system to deliver the air, and a plurality of ports (8) in the duct system with each port defining an air delivery zone ... | 10/07/2008 |
| 7410416 | Plastic HVAC component system and method for installing the same A complete plastic HVAC system assembled using individual plastic components for ensuring the efficient and quiet distribution of air from a central air unit to multiple distribution points and preventing heating and cooling losses, the need for installers to stock ... | 08/12/2008 |
| 7302959 | Low-power wireless inflatable bladder damper for forced air heating, ventilation, and air conditioning systems A low-power, wireless, inflatable bladder damper device for controlling the flow of air through an airflow channel, and a method of operation for the same. Rather than requiring power supply and/or control wiring for operation of a wireless damper device, a low-powe... | 12/04/2007 |
| 7272452 | Controller with configurable connections between data processing components A controller with configurable connections between data processing components that is optimized to provide a particular function such as temperature control is provided. In one embodiment, the controller includes a number of configurable inputs and outputs that may ... | 09/18/2007 |
| 7241217 | Method and apparatus for delivering conditioned air using pulse modulation A method and apparatus for delivering conditioned air using short duty cycles during which a damper is fully open for a time and fully closed for the remaining time. Conditioned air is continuously supplied to a plenum at low pressure and is applied to the space whe... | 07/10/2007 |
| 7238106 | Air delivery system The present invention relates to a system for delivering temperature and flow rate controlled warmed air to outlets for use in various apparatus. The system is typically in residential structures, such as homes, but could easily be adapted for apartment buildings as... | 07/03/2007 |
| 7169038 | Louvered screen apparatus for overhead and roll-up doors A screen device is disclosed for attaching to, or making an overhead or roll-up door, one example being a garage door. The device is disclosed as an apparatus that is installed as a single or multiple units within or attached to a door, the apparatus comprising (1) ... | 01/30/2007 |
| 7159475 | Apparatus and method of sampling semivolatile compounds An apparatus and method for sampling semivolatile compounds is disclosed. A collection bag is placed around an air conditioning vent on an aircraft. An opening in the collection bag receives air from the air conditioning vent into the bag. An exit in the collection ... | 01/09/2007 |
| 6997240 | Flap for an air-guide duct A flap provided with an integral motor-containing drive element provided with an integral motor-containing drive element for controlling the air flow through an air-guide duct in, for example, a motor vehicle air condition system which includes a housing defining an... | 02/14/2006 |
| 6991177 | Multi-valve damper for controlling airflow and method for controlling airflow The present invention relates to a multi-valve damper which divides a section of an airflow duct into at least two airflow sections. The damper has a plug body having a proximal end and a distal end. The plug body is adapted to separate a section of an airflow duct ... | 01/31/2006 |
| 6942563 | Air-guiding appliance An air-guiding appliance (10) for the directionally defined introduction (R) of air (L) supplied on the rear side (20) of the appliance into a space (22), in particular interior of a vehicle, having a housing (26), at least one duct (2... | 09/13/2005 |
| 6910961 | Indoor ventilation system with personalized ventilation device and its method of usage Personal air supply devices integrated with chairs are adapted for use in conjunction with building or vehicle ventilation systems. The personal air supply devices include ducts, a tube and a nozzle arranged to direct a portion of the air from the building or vehicl... | 06/28/2005 |
| 6837786 | Programmable remote-control motion vent outlet A programmable remote-control motion vent outlet includes an air vent arrangement and a control device. The air vent arrangement includes a ventilating guide adapted for mounting at a ventilating air outlet, wherein the ventilating guide has a ventilating slot for g... | 01/04/2005 |
| 6688968 | Method and apparatus for protecting buildings from contamination during chemical or biological attack Methods and systems are provided for preventing contamination of building regions or zones from unwanted chemical or biological agents during and after a chemical or biological attack. One or more inflatable occlusion devices are preferably provided for o... | 02/10/2004 |
| 6666761 | Wall-mounted supply-air device A wall-mounted supply-air device comprising an upper valve part connected to an upper edge of an aperture in a primary wall side and a lower valve part connected to a lower edge of the aperture in the wall side, the supply air to the device being arranged... | 12/23/2003 |
| 6612542 | Motor operated butterfly valve A motor operated butterfly valve arrangement, at least one valve element of which is to be brought into a proper extreme position such that water leakage or the like does not occur within the pipe controlled by the valve element, without the necessity to ... | 09/02/2003 |
| 6582293 | Air vent damper apparatus An air vent damper assembly that controls air flow into the passenger compartment of an automotive vehicle and includes an air passage having a generally rectangular cross-section and a gasketless damper door. The damper door pivots between a closed posit... | 06/24/2003 |
| 6383071 | Vehicular air-conditioning apparatus A differential mechanism is provided between first output shaft, to which the rotation of the drive motor is transmitted, and second output shaft, to which the rotation of first output shaft is transmitted, for adjusting the relative positions of these tw... | 05/07/2002 |
| 6335521 | Microwave oven A microwave oven comprising a main body formed with a cooking compartment, an outer casing surrounding the main body, to define an outer appearance of the microwave oven, a grill member provided between the main body and the outer casing, having a number ... | 01/01/2002 |
| 6227962 | Vent coupler A vent coupler has first and second leg portions and a latch element extending between the leg portions. The coupler may be formed from a single piece of wire and be detachably coupled to a vent damper. The latch element is inserted into a respective air ... | 05/08/2001 |
| 6217441 | Method and apparatus for sealing building ductwork during chemical or biological attack A system for sealing a building air duct in response to a chemical or biological attack to prevent the building HVAC system from delivering the chemical or biological agent throughout the building. The system can include an inflatable bladder for disposit... | 04/17/2001 |
| 6213117 | Motorized insulated damper assembly for furnace systems A damper unit is provided that is adapted to be positioned in a furnace duct line. The damper unit has a housing which is in communication with a fresh air source and a furnace system. The housing has a damper blade which is moveable between an open posit... | 04/10/2001 |
| 5989119 | Automatic power flow fresh air inlet A modular automatic power flow fresh air inlet comprising a housing having fresh air openings between a source of fresh air and a room, having an adjustable static pressure to be ventilated. The fresh air openings may be controlled by a valve plate pivota... | 11/23/1999 |
| 5934994 | Damper apparatus including plenum and multiple damper blades Damper apparatus includes a housing and dividers in the interior of the housing. One of the dividers forms a plenum and two openings leading from the plenum to an air flow outlet of the housing. Separate damper blades control air flow through the openings... | 08/10/1999 |
| 5921277 | Air duct damper A damper device for use with an air duct provides a paddle positioned within the air duct and an axle extending to one side of the paddle, through the duct wall and insulation to a position for manual adjustment of the position of the paddle within the du... | 07/13/1999 |
| 5857617 | Ventilator control device A ventilator control device has a hollow lower seat, a hollow upper seat disposed on the hollow lower seat, and a block disk disposed between the hollow lower seat and the hollow upper seat. The hollow lower seat has a top flange and a top notch. A lower ... | 01/12/1999 |
| 5792226 | Air current controlling device and clean room adopting the same An air current controlling device for a clean room having a high efficiency particle filter, a housing cap for the filter, and an air current directional controller provided between the filter and the housing cap. The controller has a shaft extending ther... | 08/11/1998 |
| 5520580 | Air handler to control air supply in confinement buildings for poultry and livestock An air handler mounted on the wall of a confinement building for poultry and livestock to control the amount and direction of makeup air. A curved baffle is mounted on an open bearing within an opening in the building wall. Pivotal and rocking motion of t... | 05/28/1996 |
| 5486140 | Variable air volume terminal unit with exterior insulation The disclosure involves a variable air volume (VAV) terminal unit having an inlet collar, a box-like compartment connected to the collar and an insulation layer on the exterior surface of the compartment. The compartment is made of non-fibrous, rigid shee... | 01/23/1996 |
| 5347779 | High-rise building A high-rise building comprises an exterior wall and a sheath, which is spaced in front of said wall. Vertically extending flow channels are provided between said wall and said sheath and are open at their bottom and top and may be used to supply air to an... | 09/20/1994 |
| 5303897 | Arrangement in valve dampers There is provided a valve damper which is pivotally suspended and may in its closing position cooperate with a seat, e.g., formed in a ventilating channel, and wherein an annular seal may be placed on the damper and/or seat. In order to achieve a smoke-ti... | 04/19/1994 |
| 5259411 | Flow control A flow control has a rotary gate residing within an internal flow space in a conduit. The gate is mounted for movement relative to the conduit between first and second positions, the gate in the first and second positions accounting for a different flow r... | 11/09/1993 |
| 5244434 | Ventilator A controllable slot ventilator has a housing and a closure member pivotably mounted on the housing to selectively close a vent in the housing. The closure member is supported on linking elements which are mounted on the closure member. The linking element... | 09/14/1993 |
| 5244184 | Fluid flow control device having an obturating membrane deformable in the direction of fluid flow A fluid flow control device comprises a duct having an inlet aperture and an obturating member, which is mounted in the duct and movable by an actuating member between a first position in which it closes the duct and a second position in which the duct is... | 09/14/1993 |
| 5232402 | Interior ventilation adjustment device Interior ventilation adjustment device including a first seat which is arrangeable in a building partition and which is provided with a first opening communicating with the building exterior and a second opening communicating with the building interior. T... | 08/03/1993 |
