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7241214 |
Upblast fan nozzle with wind deflecting panels
An exhaust gas discharging apparatus for connection to an exhaust gas fan including an exhaust gas nozzle comprising a duct device forming at least one exhaust passage that extends between first...
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6959903 |
Cast in place chimney form
A cast in place chimney form and installation method therefor. The cast in place form being of a relatively light weight construction and having physical and visual features that allow it to be...
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6066039 |
Adjustable chimney cover
A chimney cover is provided which can accommodate any size chimney. The chimney cover comprises at least one panel assembly that is attached to the chimney by weaving a strap through slots formed...
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6009763 |
Flow sensor and impeller therefor
An air flow sensor and impeller flow for use in industrial, agricultural and civil applications as well as in process control, emission control and measurement. The impeller is suspended for free...
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5778611 |
Vent extension flashing assembly
A vent extension flashing assembly having a tubular outside vent stack cover which is secured to a substantially flat roof flashing base plate. The tubular outside vent cover has a diameter larger...
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5451183 |
Furnace breathing filter
A furnace breathing filter protects the air inlet and exhaust gas outlet tubes of high-efficiency furnaces from plugging while enabling adequate gas flow. The furnace breathing filter comprises a...
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5439349 |
Exhaust fan apparatus
An exhaust fan to be mounted on a roof and for exhausting spent gases from a building, including a centrifugal fan scroll casing with a centrifugal fan impeller mounted on an axle within the casing...
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5402613 |
Chimney cap
A chimney cap for protecting the upper open end of a chimney flue from the ingress of undesirable elements, such as squirrels, raccoons and birds or the like, is disclosed. The cap comprises a...
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5291707 |
Bird protector for exhaust stack
Bird protector apparatus for attachment to the outlet end of a flue gas stack that emits flue gases into the atmosphere. The stack has a concentrically arranged outer annular member spaced from the...
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5174076 |
Ridge vent for hip roof
A ridge vent for a hip roof comprising a one piece plastic body including a base wall having transversely spaced rows of integral vanes extending from one surface thereof. The vanes of adjacent...
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4993314 |
Convectively cooled hot gas exhaust structure to reduce infrared radiation
The invention is a new design for a structure such as a stack for exhaust hot gases. One embodiment is that of the top portion of a ship's stack (the watchcap) for exhausting a hot steam plant, a...
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4920867 |
Chimney screen
A chimney screen device for covering the open end of a chimney to prevent access into the chimney by squirrels, birds and the like includes a rigid frame sized and constructed to be disposed upon...
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4821473 |
Chimney by-pass
A chimney by-pass is disclosed for use with a main chimney. In case of a chimney fire, a movable damper closes off the main chimney, substantially reducing the severity of the chimney fire. The...
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4688473 |
Wind guard device
Wind guard device for the purpose of sustaining a gentle flow of gas in a gas passageway (6, 8, 11) between a building and the atmosphere surrounding the building and of reducing the wind effect of...
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4655121 |
Chimney deflector hood
Deflector hood for chimneys, in particular for the air exhaust lines of industrial exhaust installations such as digestors or the like, made up of an outer jacket expanding from two opposing...
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4649807 |
Method for preventing dust depositions or build-ups in off-gas channels of electrothermal smelting furnaces
A method for preventing deposits or build-ups of dust in off-gas channels for dust-containing off-gases from electrothermal smelting furnaces. This is done by blowing an additional gas tangentially...
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4622887 |
Ventilation apparatus and methods of making and using same
A unitary, metal vent apparatus for securement to the roof of a building. The apparatus includes a one-piece hollow first member having a series of vent holes near its top portion. The apparatus...
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4548137 |
Wind cap
An upstanding nipple is provided for downward telescoping over the upper end of a furnace flue pipe outlet end and the upper end of the nipple is secured through a central opening formed in a...
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4543754 |
Clip-on chimney hood
A clip-on chimney hood comprising a substantially circular, oval, or inverted U-shaped spring integrally attached to a hood. A preferred material for the spring is a utility cable which can be...
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4346660 |
Self-supporting incinerator and expandable shield therefor
An improved, self-supporting incinerator having a combustion chamber for burning sulfur containing compounds therein and adapted to eliminate plume formation resulting from the combustion of such...
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4286975 |
Chimney heat exchanger
A heat exchanger for installation on the top of a chimney of a building includes a housing having a lower end receiving the top of the chimney and an upper end with openings permitting the escape...
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4202255 |
Chimney cap
A chimney cap of concrete construction which can be conveniently carried to the situs at the upper terminus of a chimney and readily secured thereto, to offer the purposes of keeping the rain and...
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4157239 |
Molecular seal improvement action
This invention is an improvement over the conventional molecular seal, used for the purpose of preventing the reverse flow of air into the top of a flare stack system upon cessation of flow of the...
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4154572 |
Access for flared gas to steam in flares
An improved flare system in which steam is injected into the column of gas to be burned, from circumferential nozzles at at least two spaced levels, above the tip of the flare stack. A circular...
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3895467 |
Apparatus and method for forming flashings for roof vent pipes
A flashing for protecting the junction intermediate a roof vent pipe and the surrounding roof surface is disclosed. A method for forming the flashing is also described.
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3855910 |
ACOUSTICAL VENTILATOR
A ridge ventilator by which exhaust gases, smoke, fumes, dust and heat are discharged from the interior of buildings. The ridge ventilator is uniquely adapted to restrict the acoustical energy...
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3853042 |
VENT COVER
A vent cover for prevention of infiltration of particulate matter into a t, which is particularly useful for eliminating snow infiltration in cold regions. The vent cover is an airfoil in the form...
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3817162 |
FLUE STACK OUTLET
The effective height of smoke stacks is increased to minimize ground level concentration of the effluents entrained or contained in the issuing gases by minimizing the entrainment of the cold...
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3742659 |
APPARATUS FOR MOUNTING EQUIPMENT ON A ROOF
Apparatus for Mounting Equipment on A Roof includes cooperating compartmented members which pivot on each other to provide a level platform and compartmented housing which mates with the...
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3641914 |
WIND DEFLECTOR FOR CHIMNEYS AND THE LIKE
A wind deflector for chimneys and the like comprising a first open-mesh cylindrical wire element having a second open-mesh cylindrical wire element concentrically positioned in a spaced condition...
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3523500 |
STATIONARY CHIMNEY VACUUM CAP
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3408915 |
Cowling device for underground vent stack
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3398671 |
Roof ventilator with u-shaped flue cap
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3363538 |
Vandalproof vent protector
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3282194 |
Chiminey top assembly
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3269296 |
Ventilating device
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3100433 |
Smoke pipe top
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2956495 |
Portable chimney
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2909113 |
Roof ventilator
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2890642 |
Cap assembly
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2878744 |
Flue control devices adapted for combustion heaters
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2856837 |
Chimney top
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2821900 |
Chimney flue housing
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2811095 |
Positive draft controller
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2808773 |
Burner heads
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2800850 |
Combination flashing and chimney mounting
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