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| Number | Title | Issue Date |
| 7160185 | Air transfer apparatus An air transfer apparatus which includes a door frame having a top, a bottom and opposed sides. The top, bottom and opposed sides define a door receiving cavity. A door is positioned within the door receiving cavity. The door is pivotally mounted to one of the oppos... | 01/09/2007 |
| 7089751 | Automatic fresh air exchange system A system and method for automatically providing a fresh air exchange to a cargo unit is disclosed. The system includes a single gas sensor, preferably a carbon dioxide sensor, for providing an input to a controller which derives the carbon dioxide and oxygen levels ... | 08/15/2006 |
| 7083110 | Window having a ventilation equipment The present invention relates to a window having ventilation equipment. The window having ventilation equipment according to the present invention includes a window frame formed with a mounting hole penetrating from outdoor side to indoor side, a casing which can be... | 08/01/2006 |
| 7005994 | Smart fire alarm and gas detection system A smart alarm system determines when fire, carbon monoxide, or both are present in a specific area and responds accordingly. If fire is detected, alarms are activated, emergency services are notified, and ventilation, namely vents and fans, is cut off in the specifi... | 02/28/2006 |
| 6964606 | Window ducting system A window ducting system includes a window frame that has an inner perimeter as well as an outer surface and an inner surface with respect to a dwelling. Security bars are attached to the window fame and are positioned adjacent to the inner surface. An air cooling as... | 11/15/2005 |
| 6579169 | Window fan assembly A window assembly comprises a frame into which is removably mounted a fan assembly. The fan assembly includes at least one fan mounted in an opening through a mounting plate. The mounting plate is removably secured to the window assembly by a screen, whic... | 06/17/2003 |
| 6302782 | Electric exhaust fans An electric exhaust fan has generally conventional components and is normally mounted in a window pane in known manner. The fan has a door, consisting of two rotatably mounted shells 14 and 15, that closes off a front face 11 of the fan. The door is opene... | 10/16/2001 |
| 6193602 | Ventilator for air circulation An air circulator unit with adjustable size is provided including a housing situated within a window frame. The housing includes a pair of halves each defining an interior space, an open front face and an open rear face. The housing further includes a len... | 02/27/2001 |
| 6072119 | Wall-mounted filter arrangement for blocking high-frequency electromagnetic radiation The invention relates to a filtering device with a filter housing which can accept a filter mat, is covered with a lamella grid on the outlet side and is fitted in an aperture in a mounting wall. RF screening is attained without altering the structure of ... | 06/06/2000 |
| 5664996 | Multiple blade window fan A portable window fan including a housing having a bottom wall for mounting on a sill of a window with an open sash, a top wall for engaging the open sash, a rear wall defining a plurality of inlet openings, and a front wall defining three substantially a... | 09/09/1997 |
| 5425671 | Window fan A window fan which can easily installed in a window opening without requiring the use of extraneous tools or mounting hardware. In one embodiment, the window fan comprises a housing, the housing is generally box-like in shape and is dimensioned for use wi... | 06/20/1995 |
| 5368262 | Adjustable mounting support for a box fan The present invention is a mounting support for mounting a free-standing box fan on a narrow window sill in a manner that allows the box fan to be selectively adjusted, relative the window, into differing directions without interfering with the operation ... | 11/29/1994 |
| 5297991 | Portable electric floor and window fan A combination portable electric floor and window fan is provided with louvered front and rear walls, end walls, a top surface having an upwardly-directed fixed-width V-shaped channel for receiving the lower portion of a frame or sash of a window when wind... | 03/29/1994 |
| 5296678 | Vehicle sun visor having an electric fan and heater assembly for clearing the vehicle windshield The conventional sun visor of a vehicle is provided with a fan system including a heater for defrosting and defogging the vehicle windshield. The fan system includes a fan subassembly body mounted in an opening in the sun visor by a retainer subassembly i... | 03/22/1994 |
| 5215498 | Ventilation controller An affordable ventilation controller comprises a low cost and very stable carbon dioxide sensor and a remote-controlled louvered suction fan equipped with an air filter. The ventilation controller operates independently of any existing heating or cooling ... | 06/01/1993 |
| 5000381 | Window fan with controller A window fan with an electronic controller having an AUTO mode of operation that is responsive to the ƊT between inside and outside temperature, a minimum inside temperature threshold, and the outside relative humidity. Accordingly, if it is relatively h... | 03/19/1991 |
