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7559832 |
Wood stove radon reduction system
A combination of a wood stove and radon collection system. A radon collection tube location in the basement of a building is connected via conduits leading into the combustion chamber of a wood...
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7001265 |
Air exhaust system
An air exhaust system comprises a chamber. The chamber has side walls, a ceiling, an attic and a roof. The ceiling and roof have air flow apertures. Provided next is a duct with upper and lower...
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6814661 |
Air extraction fan
A ventilator comprising a cylindrical housing the intake of which is connected to a coaxial cylindrical conduit of smaller diameter, an electric motor axially mounted in the housing, of small...
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6786815 |
Apparatus for venting rooms with exhaust fans
An apparatus for venting several rooms having exhaust fans through existing roof openings made for existing ventilation systems, including turbine ventilators, roof ventilators, ridge ventilators...
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6450881 |
Room ventilator inlet
A room ventilation air inlet is mounted in a wall or ceiling to operate in conjunction with a central vacuum system as a suction source. Activation of a suction source connected by conduit to the...
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6203422 |
Light activated exhaust fan
A light activated exhaust fan including an exhaust fan disposed above a ceiling area within a building. The exhaust fan is disposed within a housing. The housing has openings within side walls...
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5795219 |
Nail polishing workstation with ventilation and carousel tray
A nail sculpting station (12) is provided having a plurality of workstations (14), each of the workstations (14) having a work surface 16, a customer arm rest (18) and an exhaust vent (20). A...
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5788565 |
Smoke exhausting device
A smoke exhausting device is disclosed. It includes a housing partitioned into two internal rooms. One of the rooms is a bellows for creating pressure, while the other is a guide box for guiding...
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5775987 |
Smoke removing device and method
A system of casino tobacco smoke elimination based around a series of slot-like air intakes in which slot length is at least twice as great as slot height. In a preferred embodiment air velocity...
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5720661 |
Inversion type ventilating fan
The ventilating fan system comprises an air flow passage including a duct for guiding the air in a room to outside and a ventilating fan arranged in the air flow passage; whereby said ventilating...
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5514037 |
Modular passive smoke ventilation system
A modular enclosure acts in combination with a ventilation system to prevent passive smoke from spreading to an adjacent area. The enclosure is designed in accordance with the traditional...
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5499945 |
Ventilation apparatus providing air extraction adjacent selected workstations in a confined space
An exhaust ventilation apparatus to be temporarily mounted in a continuous pulp digester or similar elongated vessel to provide local air ventilation from one or more selected worksites in the...
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5464370 |
Device for changing a fluid passage
A device for changing air flow from a room has a casing with three openings arranged in a T-shaped disposition. The first and second openings are arranged in a L-shape with respect to a chamber in...
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5403234 |
Radon gas evaluation system and method
An apparatus for removing gas from above a floor slab of the interior living space of a structure to below the floor slab. The apparatus includes providing an opening which communicates from the...
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5101712 |
Sub-slab depressurization radon reduction method and apparatus
A sub-slab depressurization (SSD) radon reduction system uses an existing sub-slab refrigerant line chase as a vent pipe for suction of soil gas from a centrally located sub-slab suction point. A...
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5083500 |
Radon treatment system and method
The system for removing the soil gas from the ground surrounding the building structure, includes a clean-out pipe, an air duct system, and a fan. The clean-out pipes are installed inside the...
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5067394 |
Airborne particle exhaust system
Harmful or hazardous airborne particles are drawn from rooms, hallways, or work areas by a duct work which is coupled to a vacuum system. When hazardous airborne particles are detected, the vacuum...
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5018319 |
Pneumatic tube selector mechanism
A pneumatic tube selector mechanism is provided for use in conjunction with an abrasive sandblast media recovery system. The tube selector selectively couples a vacuum source to any particular one...
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4939986 |
Exhaust ventilator
A ventilator assembly for attachment in an opening in a partition such as a ceiling of a structure such as a dwelling. The ventilator assembly includes a housing having an elongated body portion of...
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4938124 |
Substructure radon gas evacuation system
A network of conduits are arranged under the foundation of the house. A vent pipe extends from the network conduits to above the house. A slight vacuum is drawn on the network of conduits so that...
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4926293 |
Lighting and air freshener fixture
The present invention relates to an apparatus for illuminating and for collecting air which is contaminated by a certain substance in the adjacent area of the apparatus. The latter includes a...
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4902315 |
Negative pressure asbestos removal with localized make-up air
A method of removing airborne contaminant material from a work area by isolating the work area from the surrounding environment, providing at least one entrance into the isolated work area, and...
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4787298 |
Method and apparatus to consolidate room and point exhaust with a single fan
Ambient and localized sites within a room space are exhausted as required into a single fan unit and exhaust main. Flexible ducts connected to the main are positionable at various site locations...
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4759272 |
Ventilator
A ventilator comprising a rotating plate provided on its lower surface with blades forming a centrifugal turbine surmounting the mouth of a ventilation duct or ducts in whose axis said turbine...
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4742765 |
Power roof ventilator
The invention relates to a motor-powered roof ventilator or extractor fan having its motor-impellor unit mounted within the housing for mounting on the roof or wall of a building. The centrifugal...
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4352322 |
Prefabricated vehicle maintenance apparatus
A prefabricated vehicle maintenance apparatus is disclosed, including a housing having bottom, side and end walls, which housing is adapted for insertion within a pit formed in the ground. A...
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4109144 |
Dust collection and illumination system
An improved dust collection and illumination system is utilized in association with a plurality of work areas at which dust particles are formed during work operations. A combination lamp and dust...
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4051770 |
Ventilators for mobile homes, and the like
Ventilators for mobile homes, and the like, particularly of the type which have an attic space beneath the roof and above the ceiling of the mobile home interior. The ventilator has an intermediate...
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3990356 |
Method of and apparatus for controlling the inlet openings of central ventilation installations
A method of and apparatus for controlling the inlet or exhaust openings of central ventilation or exhaust installations wherein air is only removed from the individual rooms or areas by means of a...
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3415178 |
Ventilating system and device
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3415113 |
Vehicle exhaust handling system
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3199433 |
Ventilation system
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2997132 |
Method for the ventilating of plants for the manufacture of aluminium or similar products
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