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| Number | Title | Issue Date |
| 7140960 | Boot hanger mounting bracket The present invention relates to duct systems, registers and ductwork components used with floor or ceiling registers employed in warm air heating, ventilating and air conditioning systems, and specifically to improvements for mounting and installing the components ... | 11/28/2006 |
| 7118473 | Air velocity control unit and air conditioning system having the same An air velocity control unit includes first bars fixed using a frame. Second bars are disposed below the first bars. The second bars are alternatively arranged between the first bars. The second bars are connected with each other. The unit further includes a control... | 10/10/2006 |
| 7097557 | Insulated crawlspace vent apparatus, and methods of installing same An insulated crawlspace vent to provide airflow in a crawlspace in the summer and insulate it in the winter. An aluminum extrusion built as a picture frame is glued to the opening in the foundation of the crawlspace. An insulated door closes from the outside and is ... | 08/29/2006 |
| 6602126 | Reduced opening ventilator The present invention provides a two-way vent for a vehicle that opens in a front and rear direction and includes a preferably symmetric cam having an apex on its centerline, and first and second convex sides each terminating respectively in a recess at t... | 08/05/2003 |
| 6478670 | Two-way hingeless ventilator A two-way hingeless ventilator for ventilating an enclosure through a wall thereof has a frame defining an opening therethrough. A closure member is disposed against an outer side of the frame and is alternately swingable relative to the frame between ope... | 11/12/2002 |
| 6280315 | Two-way hingeless ventilator A two-way hingeless ventilator for ventilating an enclosure through a wall thereof has a frame defining an opening therethrough. A closure member is disposed against an outer side of the frame and is alternately swingable relative to the frame between ope... | 08/28/2001 |
| 6165066 | Multi-part foundation ventilator of variable preselected width A multi-part foundation ventilator. The ventilator has a first frame member with a first exterior peripheral edge flange, and, extending inwardly therefrom, a protruding wall portion of preselected width X1(A). The first inwardly protruding wal... | 12/26/2000 |
| 6048266 | Ventilator A glazed-in ventilator (10) includes a flap (12) which is rotatable about its longitudinal axis. Each end of the flap is connected by a thumb wheel (24) to an end cap (28). Inside the thumb wheel, a series of projections (36) engage a conical surface (34)... | 04/11/2000 |
| 6007422 | Universal damper mounting system and method A universal damper mounting system and method for mounting a damper within an opening in a wall includes the use of a plurality of metal straps, each of which is initially formed into an roughly S shape with one leg being longer than the thickness of a wa... | 12/28/1999 |
| 5800261 | Air vent device including a light device to preheat supply air A device for an air valve, particularly for use with a fresh air inlet through a wall in a habitable room, and wherein the device comprises a receiver consisting substantially of air-tight material, and wherein the receiver is adapted to be tightly attach... | 09/01/1998 |
| 5766068 | Hingeless ventilator with unitary bracket A hingeless ventilator is provided for ventilating a compartment and includes a frame for attaching about an opening in the wall of the compartment. A closure member is swingable against an outer side of the frame for opening and closing the opening. Guid... | 06/16/1998 |
| 5746654 | Ventilator A vented frame (1) includes an air passage of L-shaped section having a horizontal portion (8) and a vertical portion (9). A ventilator (7) is inserted into the vertical portion and comprises an elongate main body with first and second openings (10), (11)... | 05/05/1998 |
| 5702297 | Slot ventilator A slot ventilator (100, 500) comprises a slotted backing member (24, 124, 424, 524), an elongate facing strip (26, 126, 426, 526, 626), and a linkage mechanism connecting the backing member and facing strip with one another, the linkage mechanism being ar... | 12/30/1997 |
| 5520580 | Air handler to control air supply in confinement buildings for poultry and livestock An air handler mounted on the wall of a confinement building for poultry and livestock to control the amount and direction of makeup air. A curved baffle is mounted on an open bearing within an opening in the building wall. Pivotal and rocking motion of t... | 05/28/1996 |
| 5487701 | Plastic foundation vent The plastic foundation vent embodying the invention comprises a plastic body with an integral peripheral rectangular wall surrounding the plastic body and defining opposed long sides and opposed short sides, an integral peripheral flange extends outwardly... | 01/30/1996 |
| 5484335 | Ventilated enclosure A ventilated enclosure comprising a substantially vertical side wall, a roof including at least one roof section, a ridge vent formed adjacent a portion of the roof section and side vent formed adjacent a portion of the substantially vertical side wall, a... | 01/16/1996 |
| 5460572 | Foundation ventilator A one piece molded plastic foundation ventilator. The ventilator includes a one-piece continuous and structurally jointless plastic tubular member having a first through passageway, with the tubular member having a front and a rear, and with the through p... | 10/24/1995 |
| 5232402 | Interior ventilation adjustment device Interior ventilation adjustment device including a first seat which is arrangeable in a building partition and which is provided with a first opening communicating with the building exterior and a second opening communicating with the building interior. T... | 08/03/1993 |
| 5097749 | Rolling ramp inlet A ventilation control apparatus for use with a building ventilation system in a building. The building ventilation system including input and outlet vents and a fan. An opening is formed in the ceiling of the building for introducing ventilating air flow ... | 03/24/1992 |
| 4372197 | Cold weather inlet for ventilating systems An inlet for use in a ventilating system having a frame defining an opening and provided with an inwardly directed lip, a panel mounted for rotation within the frame and including flanges which abut the lip when the panel is in closed position, an electri... | 02/08/1983 |
| 4249460 | Wall ventilator construction An improved wall ventilator for use in building constructions comprising a housing having peripheral wall members defining a ventilating passageway therethrough, a supporting lattice extending across the passageway and defining a narrow elongate slot, a m... | 02/10/1981 |
| 4056048 | Emergency ventilation means for confined livestock areas An emergency ventilation means for confined livestock areas comprised of a plurality of louvered openings which are normally closed by means of electrical motors having a high gearing ratio. When power is lost to the confined livestock area a spring on ea... | 11/01/1977 |
