Matches 1 - 50 out of 156 1 2 3 4 >
Match Document Document Title
7578734 Unit ventilator having a splitter plate and a pivoting damper blade assembly  
An HVAC unit ventilator, particularly suited for schools and hotels, includes a single damper blade driven directly by a motor to control a supply air's mixture of return air and outside air. The...
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...
7543759 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...
7533691 Adjustable damper assembly  
A damper assembly, comprising an adjustable locking means for releasable retention of an element pivotally in one of a plurality of predetermined lock positions for adjusting air flow through an...
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...
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...
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...
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...
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...
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...
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...
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...
7169039 Positive air flow shutdown system  
An airflow shutdown system that includes an air distribution system and an air duct closure device. The air duct closure device is adapted to substantially instantaneously block airflow in the air...
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...
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,...
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...
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...
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...
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...
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...
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...
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...
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...
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....
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...
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...
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....
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
5111739 Air flow control system  
A duct to carry air has openings along it and a flexible sheet extending longitudinally within it. The end of the sheet adjacent the point of air intake can be brought against one side of the duct...
5106052 Air damper apparatus  
Provided is a damper for controlling air flow through an air duct. The damper includes a mounting fame secured to the interior of the duct which has a circular opening for air flow therethrough...
5050488 Method of locking a pivotable assembly for shipping  
A damper interlock mechanism comprising a housing including first and second apertures, a damper assembly pivotably mounted in the first aperture and a swing out unit pivotably mounted in the...
4993886 Air regulating unit, process for regulating air flow, and use of a lifting body in such a system  
The new invention concerns the regulation of air volume in a conveying system comprising an air collecting line (37) in which the air volume and the corresponding air velocity, respectively, is...
4949625 Air volume damper kit and assembly  
A kit and assembly for making an air volume damper for use in the ductwork of a heating and ventilating system. The kit includes a long rod with a single bend at one end to form an L-shaped member,...
4907500 One-piece lever for multi-louvered damper  
A one-piece damper lever for a multi-louvered damper of the type mountable within a duct opening formed in a floor, wall or ceiling. The lever is used to pivot louvers between an open and closed...
4892288 Air flow louver system  
An adjustable louver unit for controlling the quantity and/or direction of the air flow in air systems, such as heaters, air conditioners and the like. This louver unit includes a rotary vane...
4887520 Air outlet device  
In an air outlet device, a closure flap (9) is pivotably mounted in a houg body (1). The closure flap can be tilted in front of an air passage opening (3) by means of an actuating part (14). To...
4887522 Air-conditioning apparatus  
An air-conditioning apparatus for adjusting the direction and quantity of air comprises a duct device forming an air passage passing through the duct device, and an airflow adjusting device. The...
4851066 Snap-secured bladder for air-distribution terminal  
A bellows assembly is provided in which a retainer member is formed as an aluminum extrusion with two uniformly spaced recesses formed therein. A bellows is provided with two uniformly spaced...
4817508 Opposed blade balanced damper  
An opposed blade balanced damper includes three sector-shaped damper blades individually mounted to a frame for pivotal movement around a pair of pivot tabs integrally formed on each damper blade....
4815362 Diffuser unit for air conditioning system  
A diffuser unit for air conditioning systems includes an air supply duct having an air inlet and two air outlets, two dampers for adjusting the open area of the respective air outlets, and a...
4811575 Sound insulated bellows-type air terminal valve  
A bellows assembly is secured to a retainer by extrusions having a mushroom or arrow shaped cross section. Air flowing through the terminal impinges upon an impervious film covering the central...
Matches 1 - 50 out of 156 1 2 3 4 >