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Document |
Document Title |
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6776349 |
Damper for controlling air flow through a passage
A damper for allowing some degree of air flow (winter ventilation) through a roof mounted, conduit to aid in preventing the growth of black mold in an attic while aiding in heat retention during...
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6454528 |
Intake and exhaust damper with movable motor fan assembly
An intake and exhaust damper assembly has a motor and fan assembly pivotally mounted for movement toward and away from a louvered rotatable blade damper.
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5735137 |
Suction inlet opening or closing apparatus for an air conditioner
An air conditioner includes an air inlet, an air outlet, a heat exchanger, and a suction source for sucking-in air through the inlet and then discharging the air through the outlet after passing...
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5645483 |
Smoke reducing power roof ventilator
A ventilator to be mounted over a square opening in a roof of an establishment producing smoke below. The ventilator has a lower transitional section transforming a square configuration into a...
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5230604 |
Multiple fan turret unit for use within a tower unit
A self-contained fan turret unit for use with a tower air recirculating system includes a housing positionable for attachment to the tower system. The housing includes an extendable column assembly...
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5195928 |
Centrifugal actuating device for pushing or pulling an element to be operated
A centrifugal device (17), in particular for operating shutters (20) disposed facing a fan (15), comprises a first end plate (23) connected to the end of a shaft (16) for rotating the fan (15)....
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4385552 |
Exhaust fan and anti-backdraft shutter assembly
Two anti-backdraft shutters are each supported in an exhaust fan assembly casing on a set of upper and lower parallel support arms. Outer ends of each set of these arms are pivotably mounted in the...
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4123001 |
Automatic ventilator
An automatic temperature responsive damper assembly for use within the conduit of a ventilating system designed to exhaust the air in a confined space to the atmosphere whereby the conduit may be...
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3908529 |
Backdraft damper
The present invention provides a backdraft damper which is constructed of essentially two integral elements. A damper frame and blades are so formed as to eliminate the necessity of separate...
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3888166 |
Molded plastic flue damper
A flue damper is shown mounted over the vent opening of a kitchen exhaust hood to prevent back drafts. The damper is formed of molded plastic material having a central beam supporting a pivoted...
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3863392 |
SAND BLAST ROOM
A sand blast room has a grid-like floor through which abrasive material resulting from sand blasting operations may fall. A series of parallel adjacent channels extends beneath the grid-like floor...
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3785271 |
NEW LOW PROFILE VENTILATOR APPARATUS MEANS
A low profile ventilator apparatus means for use in mobile homes, modular homes, and the like which includes a structural combination of lighting means or a radiant heat lamp cooperatively...
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3747909 |
CHARGING AISLE EXHAUST SYSTEM
An exhaust system for preventing release to the atmosphere, of the large volume of pollutants produced in the charging aisle during the introduction of a "hot charge" and a "cold charge" into a...
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3584566 |
LOUVERED AIR DAMPER AND METHOD OF PRODUCING SAME
An air damper ventilator combines a fixed blade ventilator with means adaptable to check the flow of air or regulate the flow of air as it passes therethrough. The ventilator is fabricated from...
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3581650 |
COMBINATION AIR DAMPER
An air damper ventilator combines a fixed blade ventilator with means adaptable to check the flow of air in a plurality of directions or regulate the flow of air as it passes therethrough.
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3433145 |
IMPELLERS,ESPECIALLY FOR VENTILATORS
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3412670 |
Roof ventilator
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3403616 |
Combination storm louver and automatic back-draft damper
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3366030 |
Roof mounted ventilator
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3349998 |
Ventilating apparatus
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3334569 |
Ventilators
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3330379 |
Device for attenuating sound waves and the combination thereof with a curb and ventilator
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3307472 |
Venetian blind-type shutter
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3270656 |
Ventilator with air discharge means
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3212425 |
Forced flow ventilator
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3204548 |
Damper construction
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3200765 |
Diesel exhaust system
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3143953 |
Fan
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3110357 |
Acoustic curb
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3085490 |
Combined skylight and ventilator
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3053165 |
Upward discharge ventilators
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3000293 |
Roof jack
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2998765 |
Pivotal louver assembly
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2981172 |
Updraft ventilator and magnetic damper catch therefor
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2963956 |
Roof ventilator
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2924166 |
Fan operated damper blade latch
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2911900 |
Retaining means for the dampers of ventilators
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2885948 |
Daylight dome ventilator construction
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2854916 |
Exhauster ventilator
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2825275 |
Thermally actuated ventilator
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2812703 |
Roof ventilator
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2810209 |
Exhaust system for tobacco barns
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