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| Number | Title | Issue Date |
| RE40276 | Biological safety cabinet with improved air flow A biological safety cabinet is provided that includes a frame. The frame defines a protected work area and encloses the work area on all but one side. A sash is coupled to the frame that at least partially encloses the side that is not enclosed by the frame. A blowe... | 04/29/2008 |
| 7335243 | Modular 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 |
| 7320636 | Exhaust fan assembly having flexible coupling An exhaust assembly is provided for expelling contaminated air from a building. The assembly includes a plenum, a fan assembly attached to the plenum, and a windband mounted on top of the fan assembly. The fan assembly is constructed of cylindrical outer and inner w... | 01/22/2008 |
| 7275533 | Pressure 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 |
| 7273049 | Dual motor kitchen range hood with perimeter air inlet A kitchen range hood for exhausting gases comprises an outer hood body within which a motor housing is mounted. The motor housing has top, bottom and perimeter side surfaces defining a pair of substantially similar air chambers, a motor and fan being housed in each ... | 09/25/2007 |
| 7247087 | Fume hood with air directing member A fume hood adapted to be connected to an exhaust system, the fume hood including a cabinet formed with a chamber having a generally flat bottom wall and a sash door mounted at the front end of the chamber for movement in a vertical plane to provide an access openin... | 07/24/2007 |
| 7193501 | Enclosure system allowing for hot work within the vicinity of flammable and combustible material An enclosure constructed around an area at which hot work is to be performed at a facility containing flammable or combustible material. Hot work includes such things as welding, torch cutting, grinding and the like. Facilities include petroleum drilling and product... | 03/20/2007 |
| 7091848 | Enclosure system for hot work within the vicinity of flammable or combustible material One or more enclosures constructed about one or more objects at which hot work is to be performed at a facility containing flammable and/or combustible material. Hot work includes such things as welding, torch cutting, grinding and the like that produces heat, spark... | 08/15/2006 |
| 6923715 | Device for regulating the air volume flow for a vent in a laboratory A device for regulating the air volume flow for a laboratory exhaust, has a rectangular housing (6) which can be arranged on the laboratory exhaust. The device is equipped with inflow devices that can be connected to the interior of the laboratory exhaust and... | 08/02/2005 |
| 6866717 | Powder coating spray booth with air curtain A powder spray booth includes a booth canopy wall arrangement to contain powder during a spraying operation; and a booth floor that is rotatable relative to the booth wall during a spraying operation. The floor can be rotated about an axis that is also the longitudi... | 03/15/2005 |
| 6582292 | Fume hood with rotatable airfoil A fume hood includes a top, bottom sidewalls, front panel and a back panel that define an enclosed workspace. The fume hood also includes a movable sash for opening and closing an access opening and an airfoil disposed proximate an edge portion of the ope... | 06/24/2003 |
| 6540603 | Method and system for the regulation of ventilation in a welding workshop A method and a system for the regulation of ventilation in a welding workshop, in which method the volume of supply air and/or extract air in the ventilation of the welding workshop is regulated. The basis of regulation of the volume is the load imposed o... | 04/01/2003 |
| 6450875 | Monitoring air entry velocity into fume hood A housing of a fume hood includes walls defining a chamber for containment of air therein. One of the walls defines an air passageway opening into the chamber, and a sensor is located outside of the chamber and measures airflow velocity through the air pa... | 09/17/2002 |
| 6368206 | Biological safety cabinet with improved air flow A biological safety cabinet is provided that includes a frame. The frame defines a protected work area and encloses the work area on all but one side. A sash is coupled to the frame that at least partially encloses the side that is not enclosed by the fra... | 04/09/2002 |
| 6036737 | Safety cabinet having easily attachable and detachable transition boot A safety cabinet having a work area defined by an enclosure and including an air circulation and cleaning system. The air circulation and cleaning system includes a plurality of air plenums and passageways through which air is circulated by a blower assem... | 03/14/2000 |
| 5988860 | System and method for directing air flow having a sash A system for directing air flow in a fume hood having a sash includes a mechanism for producing an output control signal corresponding to a desired flow of air through the sash of the fume hood. The producing mechanism includes a CPU which actively produc... | 11/23/1999 |
| 5920488 | Method and system for maintaining a desired air flow through a fume hood A system for maintaining a desired air flow through a fume hood having a sash. The system comprises a mechanism for controlling air flow through the fume hood based on at least one gain. The system is also comprised of a mechanism for automatically tuning... | 07/06/1999 |
| 5700190 | Flowhood work station A flowhood work station has an inspection chamber having a perforated inspection surface. An air filtration housing is in fluid communication with the perforated inspection surface. A blower is capable of directing air downwardly through the perforated in... | 12/23/1997 |
| 5664995 | Environmental enclosure apparatus with air flow control and balancing An environmental enclosure apparatus is presented with air flow control and air balancing. The apparatus includes a housing having a work chamber, multiple adjustable fans for moving air into the work chamber, a filter for filtering particulate from the a... | 09/09/1997 |
| 5658373 | Air cleaning methods for mechanical industrial process An air cleaning system for treating contaminated air from a mechanical industrial process containing a heterogenous multi-component mixed density fluid (e.g., mist, vapor and/or smoke) that addresses the cloud-like behavior of this contaminated air. The a... | 08/19/1997 |
| 5549512 | Minienvironment for hazardous process tools A method and apparatus for providing a clean working area within an enclosure while simultaneously permitting open access to the working area from outside and also preventing any toxic substances from escaping the enclosure to contaminate a worker area. A... | 08/27/1996 |
| 5447468 | Fume hood A fume hood for venting fumes comprising a cabinet, a venting system, and a split sash. The cabinet defines a working area. The cabinet has a front face which comprises an opening for providing access to the working area. The venting system is connected t... | 09/05/1995 |
| 5431599 | Environmental control system An environmental control system including a modular isolation chamber wherein work pieces and processing or other machinery are isolated from the remainder of the rooms in which they are located, Use of the portable, modular chambers also permits control ... | 07/11/1995 |
| 5322533 | Decontamination system for removal of hazardous substances A fail-safe air handling and safety system is described. The system is for use by workers during removal of hazardous substances, such as asbestos, lead, and toxic chemicals, from within a structure. The structure has a containment area with air exhaust o... | 06/21/1994 |
| 5090303 | Laboratory fume hood control apparatus having improved safety considerations A fume hood controlling apparatus that provides desirable operational safety features for persons who use the fume hoods to perform experiments or other work. The apparatus is adapted for use with fume hoods that have a filtering means lcoated between the... | 02/25/1992 |
| 5074897 | Particulate contamination control system enclosure A self contained portable negative pressure control system enclosure for protection from airborne asbestos particles and the like from a work space includes an enclosure formed of portable rigid door frames having spring doors and a weighted transom closu... | 12/24/1991 |
| 4987673 | Apparatus for packaging semiconductor devices An apparatus for packaging semiconductor devices includes a die bonder, a wire bonder, and a molding unit wherein the die bonder, the wire bonder, and the molding unit are sequentially arranged for operation in an uninterrupted continuous sequence. To pre... | 01/29/1991 |
| 4890780 | Manufacturing apparatus A manufacturing apparatus has a clean air supply means provided integrally with a part thereof for supplying clean air toward at least an area in which a workpiece exists, and an air discharge means disposed so as to face the clean air supply means across... | 01/02/1990 |
| 4704951 | Ventilation system for an isolation enclosure A glove box having an air admission device (6) and an air exhaust device. The air admission advice (6) includes a moving mechanism (60, 76) of which at least a portion is situated inside of the valve body (44), this moving mechanism acting on the one hand... | 11/10/1987 |
| 4435194 | Circuit for ventilating and filtering the medium contained in a confinement enclosure The invention relates to a circuit for ventilating and filtering the medium contained in a confinement enclosure (10) and also a method for sterilizing such an enclosure and its supply and discharge filters. An emergency or standby circuit is associated with t... | 03/06/1984 |
| 4177717 | Baffle system for fume hood A laboratory fume hood that has a lower baffle, intermediate baffle, and upper baffle spaced from each other and from a floor of the fume hood for directing fumes upwardly to an exhaust opening. The baffle system provides an inverted funnel configuration ... | 12/11/1979 |
