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| Number | Title | Issue Date |
| 7025670 | Rotatable vent A wind powered rotatable vent includes an annular rotatable louvered panel axially rotatable about a shaft and an impeller disposed in spaced underlying relationship with respect to the rotatable louvered panel and rotatably secured to the shaft. A fixed collar unde... | 04/11/2006 |
| 6911340 | Method and means for composting organic material by natural draft A method and means for drawing air through material by natural draft wherein air is drawn into one end of a container having the material therein and is sucked from the other end thereof by a wind powered rotary turbine ventilator. ... | 06/28/2005 |
| 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 and hip ventilators. The vent apparatus has two side panels, a bottom ... | 09/07/2004 |
| 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 colder periods of the year. The low profile damper is comprised of a ho... | 08/17/2004 |
| 6431972 | Multiple plumbing vent apparatus An apparatus for venting several plumbing pipes through existing roof openings made for existing ventilation systems, including turbine ventilators, roof ventilators, ridge ventilators and hip ventilators. The plumbing vent apparatus has two sides, a bott... | 08/13/2002 |
| 6431973 | Structure of turbine exhauster An improved structure of a turbine exhauster. The exhauster includes a fan assembly, an operating assembly and a fixing assembly, wherein the connecting points on the components of the assemblies have mounting holes and the turbine exhauster is assembled ... | 08/13/2002 |
| 6402609 | Seal vent A damper for an air turbine mounted on the roof of a house, or other structure, comprising a tube adapted to fit into the opening below the turbine, a cover hingedly attached to the tube, a cable attached to the cover adapted to be pulled out to close the... | 06/11/2002 |
| 6352473 | Windjet turbine A roof-mounted wind turbine includes turbine vanes that are linear-shaped and do not have the conventional convex curvature. Additionally, the turbine vanes are made in common with one another or with a common turbine component, so that each vane does not... | 03/05/2002 |
| 6302778 | Turbine roof ventilator A turbine roof ventilator includes a rotatable shaft defining an upper end and a lower end. A turbine hood is located on the upper end of the shaft and is adapted to turn with the shaft. A cylindrical sleeve is disposed below the turbine hood. The shaft i... | 10/16/2001 |
| 5571045 | Assemblable turbine air pump A user assemblable turbine air pump includes mainly a top lid, an axle assembly, a bottom seat plate, a blade supporting ring, three blade supports, four bottom seat supporting legs and a plurality of blades, these are classified and lapped in a styrofoam... | 11/05/1996 |
| 5375651 | Draft inducer blower motor mounting and cooling construction A draft inducer blower motor mounting and cooling construction comprising an electric motor including a housing having openings therein and a rotor mounted on a shaft, a fan blade fixed on the shaft and interposed between the motor and the draft inducer b... | 12/27/1994 |
| 5326313 | Thrust bearing assembly for roof turbine The turbine head of a wind-powered turbine ventilator is rotatably supported on a spindle by a thrust bearing assembly. A thrust receptacle is mounted on the upper part of the turbine head to receive the supporting end of the spindle. A centering collar c... | 07/05/1994 |
| 5183435 | Seasonal attic turbine ventilator An improvement is provided in a roof-mounted turbine-type ventilation fan and associated air-handling duct whereby rotation of the fan is stopped and the duct is closed during periods of cold weather. Stoppage of rotation of the fan is achieved by an elon... | 02/02/1993 |
| 4648312 | Apparatus for ventilating an enclosed area An apparatus for ventilating an enclosed area comprised of a hemispherical dome-like head assembly covering an exit hole to an enclosed area to be ventilated, an external wind driven fan, and high efficiency internal exhaust fan blades adjacent to the exi... | 03/10/1987 |
| 4582250 | Automatic damper assembly An automatic temperature responsive damper assembly for use within the conduit of a ventilating system designed to exhaust the air from a confined space to the atmosphere when the confined space reaches a preselected temperature greater than that in the c... | 04/15/1986 |
| 4374534 | Turbine ventilator cover A cover for covering a turbine ventilator has a cover body including a first body member having a first body edge and a first body base edge, and a second body member has a second body edge and a second body base edge. An internal seal is bound to a porti... | 02/22/1983 |
| 4287816 | Ventilator shroud A durable shroud is provided for roof ventilators to prevent warm air from escaping through ventilators openings as well as to provide a protective cover for the ventilator in inclement weather. The ventilator is comprised of two hemispherical segments th... | 09/08/1981 |
| 4236443 | Chimney stack exhaust unit A chimney stack exhaust treatment unit and an improved exhaust gas treatment system utilizing such a unit are disclosed. The unit comprises a generally spherical outer housing which fits over the mouth of a caustic-resistant chimney pipe and encloses a ho... | 12/02/1980 |
| 4231288 | Roof ventilating aperture seal A disk, having a larger diameter than the diameter of a roof vent aperture to be closed, supports an annular resilient member in contact with the inner surface of the roof around the aperture. The disk is held in place by a resilient member extending betw... | 11/04/1980 |
| 4200035 | Modular ventilating assembly A ventilating assembly is formed of three basic modules, namely a base unit constituted as a static ventilator, a turbine unit constituted as a wind-operated ventilator, and a drive unit which can operate the turbine unit as a motor-driven ventilator. The... | 04/29/1980 |
| 3952638 | Fans for use with turbine ventilators, and methods and apparatus for supporting the same Fans for use with turbine ventilators and apparatus and methods for supporting the same, wherein the fan is supported spaced from the entrance to the turbine ventilator whereby aspiration increases the air flow through the ventilator.... | 04/27/1976 |
