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President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 8038515 | Control of exhaust systems Exhaust capture and containment are enhanced by means of automatic or manual side skirts, a sensitive breach detector based on interference effects, a combination of vertical and horizontal edge jets, and/or corner jets that are directed to the center diagonally fro... | 10/18/2011 |
| 7775865 | Set and forget exhaust controller A controller automatically determines drive signals by testing an exhaust system, either immediately after installation or at selected times thereafter, to determine the drive signal values that correspond to each of one or more selected flow rates. The drive signal... | 08/17/2010 |
| 7485033 | System comprising an exhaust hood and a support for wall or ceiling mounting of the exhaust hood A system includes an exhaust hood having a housing and an exhaust conduit disposed on the housing, a support for mounting the exhaust hood to a wall or ceiling, and an exhaust duct extending in the wall or ceiling. The exhaust conduit has a first coupling member dis... | 02/03/2009 |
| 7445546 | Housing for an extractor hood and ventilator housing An extractor hood housing including at least one ventilator housing which the extractor hood housing forming at least a part of the ventilator housing. The extractor hood housing has at least one section of an external housing wall embodied by a part of the ventilat... | 11/04/2008 |
| 7442119 | Ventilation device, particularly an exhaust hood with air flow control means Disclosed is an exhaust hood (10) comprising a drive unit (20) for generating an air flow, a control device or control circuit for controlling the drive unit (20), and a measurement section comprising a transmitter device (22) and a recei... | 10/28/2008 |
| 7364094 | Method 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 |
| 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 |
| 7316720 | Securing device for a filter element A securing device for a filter element, which can be detachably mounted on an extractor hood, has a connecting implement for detachably connecting the filter element to the associated extractor hood. The connecting implement catches the filter element when detaching... | 01/08/2008 |
| 7150314 | Dual exhaust energy recovery system A heat recovery arrangement. The arrangement has a housing including a bathroom exhaust inlet, an exhaust outlet, a bathroom exhaust airflow path through the housing from the bathroom exhaust inlet to the exhaust outlet, a return air inlet, and a return air path thr... | 12/19/2006 |
| 7147168 | Zone control of space conditioning system with varied uses A space conditioning system for a building including production and occupied spaces provides precise control of exhaust and space conditioning equipment by taking into account multiple conditions and by using predictive control. The control method and system are ill... | 12/12/2006 |
| 7138014 | Electroless deposition apparatus An apparatus and a method of depositing a catalytic layer comprising at least one metal selected from the group consisting of noble metals, semi-noble metals, alloys thereof, and combinations thereof in sub-micron features formed on a substrate. Examples of noble me... | 11/21/2006 |
| 7094266 | Multipurpose, self-contained, portable and odor-free workstation A novel sanitary and odor free workstation having two spaced apart, transparent plate members that are operatively interconnected to a vacuum source and in combination define a vacuumed air evacuation area that functions as a workstation between the plate members. T... | 08/22/2006 |
| 7083513 | Portable ventilator for work station A portable ventilator for removing deleterious gasses from a welding site provides a funnel-like collection head structurally carried by an electrically non-conductive rigid dispersement tube carrying a powering structure. The powering structure provides pressurized... | 08/01/2006 |
| 7080443 | Solid surface material fabrication station A fabrication station (117) suitable for use mobile unit (1) or as stand alone unit for fabricating solid surface construction materials is provided, as is a method of use therefor. The fabrication station is equipped with climate control units (23,... | 07/25/2006 |
| 7066091 | Methods and apparatus for controlling impurity levels in an enclosed printing press environment Methods and apparatus for controlling impurity levels in an enclosed printing press environment are disclosed. A disclosed system controls impurity levels by using variable speed fans to control the intake of air into the enclosed environment and the exhausting of a... | 06/27/2006 |
| 7037359 | Grease containment system A device, system, and method for collecting grease on rooftop exhaust fans, comprising a gasket formed of sorbent material. The gasket is dimensioned for placement between an exhaust fan and a base for the exhaust fan. When placed between the exhaust fan and the bas... | 05/02/2006 |
| 7001263 | Air flow monitoring and control system with reduced false alarms An air flow monitoring and control system with reduced false alarms includes an alarm sensor for monitoring air flow in a fume hood or the like, set to provide a warning if air flow drops below a predetermined amount. A local controller monitors the alarm, and disab... | 02/21/2006 |
| 6974375 | Double vent dust collection hood with inspection lighting, storage shelf and sandpaper dispensers A sanding hood has a bottom vent for above a bottom shelf attached to a sanding bench with the shelf aligned with the top of the bench. A series of halogen lights attach above the bottom vent to shine on the bench. An upper shelf above the lights shields the worker'... | 12/13/2005 |
| 6945244 | Range hood The present invention relates to a range hood for evacuating air or emitted gas, which contains oily smoke and the like generated by cooking on a range, to the outside of a house. ... | 09/20/2005 |
| 6926000 | Range hood motor housing and fan connector A range hood having an improved grease collecting motor housing and improved fan and motor connection. Housing openings are defined by circular walls projecting vertically into the housing acting to collect grease within the housing. A flange depends radially outwar... | 08/09/2005 |
| 6863501 | Domestic or industrial hood having a rapid attachment device for a centrifugal fan A domestic or industrial hood having a rapid attachment device for a centrifugal fan wherein an opening (13) is foreseen in the structure (12) of the hood being externally connectable to a discharge hose and adapted to receive one end (17) of a ... | 03/08/2005 |
| 6846236 | Pivoted fume hood A fume hood is pivotally mounted on a vertically extending axle fixed to a chemical tank and extending through a sleeve in the hood allowing the fume hood, with a flexible coupling to an exhaust blower, to pivot from a use position adjacent the tank to a position pi... | 01/25/2005 |
| 6782885 | Smoke exhauster having forwarded fan casing A smoke exhauster includes a housing having an inclined plate extended forwardly and downwardly from an upper panel of the housing, a fan casing includes an upper panel secured to the upper plate of the housing to support one or more motors or fan devices, and inclu... | 08/31/2004 |
| 6761559 | Gas-exhausting module structure suited for a continuous type oven A gas-exhausting module structure includes a casing having a first open end and a second open end. An air-exhausting channel is defined within the casing. The air-exhausting channel has an upper opening that is lower than the second open end of the casing. A blower ... | 07/13/2004 |
| 6719622 | Smoke exhaust structure A smoke exhaust structure including a housing, a circuit system and a smoke exhaust system. At least one motor is arranged on the housing. The circuit system is connected with the motor and a controller via electric wire. The smoke exhaust system is composed of at l... | 04/13/2004 |
| 6648748 | Vacuum conduit system for removal of fumes and air borne particulate matter A vacuum conduit system for removal of fumes and air borne particulate matter includes a primary duct and a plurality of flexible secondary ducts mounted in fluid cooperation to the primary duct. The primary duct includes hollow rigid conduit sections int... | 11/18/2003 |
| 6626972 | Smoke exhauster having changeable filter devices A smoke exhauster includes a housing having a front opening and a rear orifice, for receiving two filter devices respectively. One or more fan devices are disposed in the housing for generating air to flow through filter devices, and a device may be used ... | 09/30/2003 |
| 6569008 | Network for an oil-smoke exhausting device A network for an oil-smoke exhausting device includes multiple cone-shaped nets separately piled up to one another and adapted to be mounted under an inlet of the oil-smoke exhausting device. Each net has a close end and an open end. The close end has a d... | 05/27/2003 |
| 6503139 | All-purpose conduit for conveying harmful fumes or gases away from a work station The conduit (5) includes a rotary fitting (11), and two segments (18, 19) elbow-connected to each other and each having an articulated mechanism (23, 24) including a par of U-section bars (26, 27) connected to each other in the form of an articulated para... | 01/07/2003 |
| 6440265 | FRP hood for paper processing plant An improved hood enclosure for isolating wood pulp washing equipment from the ambient environment. The hood has a pair of end members, a pair of skirts along each side to connect to the end member together, and an upper spine also connected at each end to... | 08/27/2002 |
| 6308473 | Roof louver filter system A roof louver filter system for preventing snow from entering an attic of a building structure through a roof louver vent during inclimate weather conditions. The inventive device is comprised of an air permeable material that is formed into a U-shaped st... | 10/30/2001 |
| 6216686 | Slanted motor housing for range hood A range hood includes a motor housing having two slanted motor supporting platforms provided thereon wherein two motor are detachably mounted on the two slanted motor supporting platforms respectively such that the motors are inclined with respect to a ce... | 04/17/2001 |
| 6182653 | Exhaust hood An exhaust hood having an inverted V-shaped interior, the walls comprising the inverted V including grease filters and the apex of the inverted V lying adjacent to an exhaust duct to be placed in communication with an exhaust fan. The interior of the hood... | 02/06/2001 |
| 6178976 | Pickle tank cover with plenum chamber A tank cover made of a plurality of sections, which when connected, form a continuous tank cover enclosing the pickle tank. The tank cover is constructed of a plurality of exhaust sections each having an exhaust outlet and a plurality of sections having a... | 01/30/2001 |
| 6017416 | FRP hood for paper processing plant An improved hood enclosure for isolating wood pulp washing equipment from the ambient environment. The hood has a pair of end members, a pair of skirts along each side to connect to the end member together, and an upper spine also connected at each end to... | 01/25/2000 |
| 5983888 | Low noise cooker hood A low noise hood is provided having a housing with an air inlet and an air outlet. A first modular device in the form of an intake muffler with a first air duct passage extending therethrough is mounted within the housing near the air inlet. A second modu... | 11/16/1999 |
| 5951394 | Controller to maintain a certain set of environmental parameters in an environment This invention continuously monitors the differential pressure between two environments, and dynamically adjusts the air handling system of the controlled environment to maintain a desired differential pressure setpoint by using a closed loop control meth... | 09/14/1999 |
| 5890484 | Exhaust system for kitchens An exhaust device (100) for a kitchen exhaust system incorporating a range hood (11) is disclosed, which is capable of substantially reducing generation of noise while efficiently evacuating fumes from the kitchen without a suction loss. The exhaust devic... | 04/06/1999 |
| 5816906 | Vented hood with filter A hood for placement on a table or work station which covers the hands of the worker and customer who is having a manicure or who is having artificial fingernails attached or replaced. The hood includes two spaced apart side walls positionable on the hori... | 10/06/1998 |
| 5810657 | Controller to maintain a certain set of environmental parameters in an environment A system controller continuously monitors the differential pressure between two environments, and dynamically adjusts an air handling system of the controlled environment to maintain a desired differential pressure setpoint by using a closed loop control ... | 09/22/1998 |
