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Class 454/238 - Pressure regulation


Subclass of Class 454 - Ventilation
Definition: Apparatus including means responsive to air conditions either
No. of patents: 105
Last issue date: 11/30/2010


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NumberTitleIssue Date
7841929Recreation room and method for controlling the atmosphere in the room
The invention concerns a method of adjusting a room air in a first room wherein the room air is supplemented continuously or at recurring intervals of time by nitrogen or a nitrogen-bearing, carbon dioxide-poor gas mixture in such a way that the proportion of oxygen...
11/30/2010
7749053Device for generating a negative pressure in the sealed room of a tablet press and/or of an isolator
A device for generating a negative pressure in the sealed room of a tablet press and/or of an isolator, with a fan connected to the sealed room and an air opening towards the sealed room, wherein the intake side of an ejector is connected with the sealed room, the w...
07/06/2010
7409986Method for controlling flow rate of ventilating air in air conditioner
A method for controlling flow rates of outdoor air supplied to a room and room air discharged to an outside of the room in ventilation. The method of the present invention includes the steps of supplying outdoor air drawn through an air supply duct to a room at a fi...
08/12/2008
7364094Method and apparatus for controlling space conditioning in an occupied space
Techniques for controlling air conditioning and transfer air in an occupied space are described. The example of a commercial restaurant is provided. Features of model based control and integration of load predictors is also described. ...
04/29/2008
7357831Method and apparatus for controlling humidity and mold
An apparatus for reducing a relative humidity of air inside an enclosed space includes a portable outside air heat exchanger unit having a fan operative to create an air stream by drawing outside air from an intake and discharging the air stream through an outlet in...
04/15/2008
7335243Modular biosafety containment apparatus and system
The present invention relates to apparatus and systems for isolating hazardous agents and organisms from their handlers and the public. In particular, the present invention relates to modular negative pressure biological containment chambers. ...
02/26/2008
7285147Air supply systems and pressure adjustment devices for use therewith
An air supply system for a clean room with a critical machine. An intake duct connects the exterior of the clean room to a make-up air unit, and is configured to transport external air into the make-up air unit. A first air duct connects the make-up air unit to an a...
10/23/2007
7275533Pressure controller for a mechanical draft system
Systems and method for controlling the flow of air through a mechanical draft system are disclosed herein. A pressure controller for controlling air pressure comprises an appliance controller configured to control the operation of a plurality of appliances, an intak...
10/02/2007
7264896Two-stage hybrid gas pressure regulator
A gas pressure regulator (100) includes a mechanical primary stage (102), preferably including a spring valve, and an electronic secondary stage (104), preferably including a micromachined pressure regulator, the combination of the mechanical pr...
09/04/2007
7263995Hyperbaric oxygen therapy system controls
A hyperbaric oxygen therapy system includes a pressure vessel containing a gas, an oxygen concentration measurement apparatus for monitoring the concentration of oxygen in the gas, an environmental control apparatus for controlling the temperature of the gas in the ...
09/04/2007
7198045Low pressure hyperbaric chamber and method of using the same
A low pressure hyperbaric chambers and methods of using same are disclosed. The present invention provides means for designing, building, and using low pressure chambers suitable for use in managing pain associated with medical conditions. ...
04/03/2007
7188636Containment cart
A portable enclosure apparatus is provided with a frame assembly having a bottom wall, an upper frame member and a single pair of vertical support members. The support members are easily length adjusted by a single user to vary the height of the system while in use....
03/13/2007
7134444Environmental containment unit
A portable enclosure, easily erectable and collapsible, to provide environment control and prevent contaminants from being released from the enclosure. The enclosure provides a flexible envelope attached to the interior of the space defined by vertical and horizonta...
11/14/2006
7131398Air flow sensing and control for animal confinement system
An environmental monitoring and controlling system for a ventilated cage and rack system that monitors and measures air flow in the rack at either the rack or cage level. At the rack level, two pressure sensors are provided in a supply air system to accurately monit...
11/07/2006
7118474Arrangement for controlling airflow for example in clean rooms
A device for controlling airflow between a clean room (1) and an adjacent room (2) is described. Channels (10, 6) lead from the rooms (1, 2) to a common junction (8). A ventilation channel (9) is leading from the common junc...
10/10/2006
7117045Combined proportional plus integral (PI) and neural network (nN) controller
A neural network controller in parallel with a proportional-plus-integral (PI) feedback controller in a control system. At least one input port of the neural network for receiving an input signal representing a condition of a process is included. A first set of data...
10/03/2006
7094142Portable device with interchangeable air cleaning modules for cleaning the air outside of an existing enclosed space and delivering the cleaned air into the existing enclosed space
A portable device that is placed between the ambient air outside an existing enclosed space and the existing enclosed space that pulls the ambient air through an interchangeable array of air cleaning modules and delivers the cleaned air from the air cleaning modules...
08/22/2006
7086276Temperature correction method and subsystem for automotive evaporative leak detection systems
A method and sensor or sensor subsystem permit improved evaporative leak detection in an automotive fuel system. The sensor or sensor subsystem computes temperature-compensated pressure values, thereby eliminating or reducing false positive or other adverse results ...
08/08/2006
7080645Anti-snoring device, method for reducing snoring, and a nasal air cannula
The application relates to an anti-snoring device comprising a compressor and a nasal air cannula, the air compressed by the compressor being blown through the nasal air cannula into the nose of a sleeping person. The invention also relates to an optimized nasal air...
07/25/2006
7040301Fuel system with integrated pressure management
A fuel system supplying fuel to an internal combustion engine of a vehicle. The fuel system includes an integrated pressure management system managing pressure and detecting leaks in the fuel system. The integrated pressure management system also performs a leak dia...
05/09/2006
7025084Integrated pressure management system for a fuel system
An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the head space in a fuel tank, a canister that collects volatile fuel vapors from the head spa...
04/11/2006
7008206Ventilation and cooling in selective deposition modeling
A ventilation and cooling system for a selective deposition modeling apparatus dispensing a curable material. The ventilation and cooling system captures airborne contaminants in the apparatus making the apparatus suitable for use in an office environment. A pressur...
03/07/2006
6976911Method and apparatus for filtering airborne contaminants
A method and apparatus for removing airborne contaminants in residential or commercial buildings injects filtered air into these enclosures. Prior to be injected in these enclosures, the air is filtered for chemical, biological or radioactive hazards. The filtering ...
12/20/2005
6974380Laboratory air handling unit
The invention is an air handling system that is shared between a laboratory and offices within the same building. The normally separate office and lab systems have been combined by way of an air return system that draws air from the offices and feeds into both the o...
12/13/2005
6960126Wireless communication for fume hood control
A method and apparatus for controlling a fume hood. A containment condition, i.e., a condition that may affect containment of potentially harmful substances in the hood, may be detected, and information regarding the detected condition sent by wireless signal. A fum...
11/01/2005
6948553Modular heat recovery ventilation system
A modular heat recovery ventilation system includes a modular heat exchanger and a modular apparatus spaced from the heat exchanger for delivering both fresh air and exhaust air to the heat exchanger. The apparatus includes separate blowers for generating two separa...
09/27/2005
6931919Diagnostic apparatus and method for an evaporative control system including an integrated pressure management apparatus
A diagnostic appartus and method for a fuel system that supplies fuel to an internal combustion engine. The fuel system includes a fuel tank that has a headspace and a filler occluded by a removable cap, a charcoal canister in fluid communication with the headspace,...
08/23/2005
6929062Air-conditioning apparatus
An air-conditioning apparatus regulates at least the temperature of at least one room to a predetermined temperature desired value (TRAUM SOLL) by ventilation with heated or cooled supply air. The air-conditioning apparatus has a supply air motor (15
08/16/2005
6923716System and method for protection against nuclear, biological and chemical (NBC) contamination
The invention provides an NBC protection and decontamination system, having a space delimited by an enclosure, the enclosure having a clean air inlet port and an air outlet, a decontamination unit attachable to the outside of the enclosure, the decontamination unit ...
08/02/2005
6910500Integrated pressure management system for a fuel system
An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the head space in a fuel tank, a canister that collects volatile fuel vapors from the head spa...
06/28/2005
6758744Building interior air pressure control system
A method for controlling building interior air pressure that is different from external environment air pressure, wherein the internal and external air pressure difference can be significantly large. The internal and external air pressure difference is maintained th...
07/06/2004
6699119Electronically regulated self-controlled ventilation unit
A ventilation unit is provided comprising an electronically driven ventilator, mounted inside a casing wherein emerge several ducts connected to one or several rooms. Said unit further comprises orifices with specific cross-section, and a differential-pre...
03/02/2004
6634939Ventilation system and method
A ventilation system includes one or more exhaust fans and one or more make up air fans. Each fan has is driven by a motor operating at a constant speed. Each fan and motor are coupled by a torque converter, so that the torque applied to the fan is consta...
10/21/2003
6463397Environmental monitoring and control system for a ventilated cage and rack system
An environmental monitoring and controlling system for a ventilated cage and rack system that monitors and measures air flow in the rack at either the rack or cage level. At the rack level, two pressure sensors are provided in a supply air system to accur...
10/08/2002
6321997Method for operating a stove in a building, and a device for carrying out this method
Method to operate a combustion device in a house or similar building, with fossil fuel furnaces, such as wood or oil furnaces. Outdoor air is supplied to a heat exchanger that is connected to the smoke tube of the furnace, in such an amount that an interi...
11/27/2001
6221160Method and apparatus for environmental control in a process chamber
An apparatus and a method for environmental control in a process chamber, and specifically, in a spin coating chamber are disclosed. In the apparatus, an air velocity control system which consists of a pressure sensor, a throttle valve controller and a th...
04/24/2001
6218798Central vacuum interface for air exchanger
A central vacuum cleaner system having a motor driven vacuum source which is selectively turned on or off. The central vacuum cleaner has an interface connector for establishing a connection between the central vacuum and an air exchanger. The interface c...
04/17/2001
6120606Gas vent system for a vacuum chamber
The present invention provides a gas vent system for a vacuum chamber. The particle placed onto the wafer after loading out from a vacuum chamber can be greatly reduced by the system design. The gas vent system has a gas supply, an anti-vibrating tube, a ...
09/19/2000
6119715Automated pneumatic purger
An automatic control system for providing pneumatic purging protection for a sealed enclosure containing electrical equipment in accordance with the National Fire Protection Association standards. The system supplies a purge gas under a pre-ordained press...
09/19/2000
6095426Room temperature control apparatus having feedforward and feedback control and method
A controller for heating, ventilating and air-conditioning distribution systems, which includes feedforward and feedback control strategies. The controller has a feedforward control strategy that generates a control signal based on control set points and ...
08/01/2000
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