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| Number | Title | Issue Date |
| 7335096 | Adjustable pergola A louver type roof structure includes a plurality of elongated parallel slats mounted on slat hinges pivotally supported on carrier beams transverse to the slats. The slats are pivotable between a closed position in which their longitudinal adjacent edges overlap ea... | 02/26/2008 |
| 7328533 | Window shutter opening and closing device An apparatus for opening and closing window shutter slats or louvers converts rotary motion by a knob or electric motor into rotary motion of one of the slats. The apparatus is attached to a frame structure that is included with the window shutter and which surround... | 02/12/2008 |
| 7222456 | Impact resistant hurricane shutter assembly An impact resistant shutter assembly, such as Bahama and Colonial-style shutter assemblies, for protecting glass of external openings of a structure, where the shutter assembly is resistant to damage by flying debris from high wind storms and hurricanes, said shutte... | 05/29/2007 |
| 7128104 | Receiving pit dust control device and method of use A receiving pit has a grid covering an uppermost opening through which grain or other material is deposited into the pit. The grid including a series of generally parallel and spaced bars and a dust control device according to this invention includes a number of fli... | 10/31/2006 |
| 6219970 | Window shutter having recessed side actuating louver member A frame member having a centrally disposed opening, a plurality of louvers pivotally disposed within the opening of the frame member, a relief notch on the lateral edge of the louver, and a louver adjusting member attached to the plurality of louvers. The... | 04/24/2001 |
| 5873202 | Slidably adjustable rigid awning The invention is an improved rigid awning structure which permits some regulation of pass-through light and which may be constructed attached to a building or free standing. The invention provides slated louver sets arranged one above the other in banks o... | 02/23/1999 |
| 5765307 | Window blind systems A compact blind system capable of controlling the amount of light, heat or air flow entering a room by means of multiple, independent slat systems. The slats can work either in combination or independently with each other and can be fit either inside mult... | 06/16/1998 |
| 5544686 | Dust control system A dust control system and method for controlling the dust emitted into the atmosphere while dumping grain at a pit at grain elevators. The system includes a plurality of sections, including metering sections with sensing device and dump sections with louv... | 08/13/1996 |
| 5505379 | Forced air register with louver control and method of construction thereof The present device is a movable-louver heating and cooling register. The register is designed to have the same overall dimensions of commercial registers available today. The heating and cooling register has movable louvers installed on pivots that are fo... | 04/09/1996 |
| 5471789 | Arched shutter assembly An arched shutter assembly is provided having generally V-shaped or tapered louvers operated by a uniformly arched operating arm all mounted within an arched peripheral frame. Each louver rotates on an axis that is aligned with a center reference point at... | 12/05/1995 |
| 5238042 | Window blind system A window has a rectangular frame with pivotable sections movable between an opened and closed position. A level connected to a movement transmission bar is provided to pivot the sections about pegs mounted to a support in the frame. The level is of a defo... | 08/24/1993 |
| 4635395 | Louver assembly particularly useful for air-conditioning units or other like appliances A louver assembly particularly useful for air-conditioning units and other like appliances comprises a frame defining an opening; a first group of slats extending along one coordinate axis mounted to the frame within the opening and pivotable about that a... | 01/13/1987 |
| 4513655 | Damper and blade therefor An air damper having a frame, blade support strips on opposite sides, having blade pivot pins extending at spaced intervals, blade members extending from side to side and having pin receiving recesses at opposite ends for receiving pins on the support str... | 04/30/1985 |
| 4493342 | Double louver damper A double louver damper for use in a duct system conveying hot gases and particles in order to permit safe entry to be made therein when servicing is required has a frame to be incorporated in the system. The frame has two parallel seals surrounding the fl... | 01/15/1985 |
| 4313650 | Apparatus for controlling light and heat transference for greenhouses Apparatus for controlling light and heat transference to and from a greenhouse comprising a plurality of light-weight, rigid, insulative, slats operable to be selectively opened or closed in venetian blind style to selectively lighten or darken any or all... | 02/02/1982 |
| 4254581 | Louver shutter with movable louver boards This invention relates to a louver shutter with movable louver boards in which a set of adjustable louver boards capable of opening and closing are aligned in one side, the upper part, or lower part of the panel of a louver shutter or door, thereby to per... | 03/10/1981 |
| 4241647 | Air damper valve An air damper having a plurality of blades of the opposed blade type is provided wherein such damper provides substantially uniform air flow distribution throughout the flow area of such damper.... | 12/30/1980 |
| 4241539 | Seal for sides of pivoted blade structures The sides of the blades in a pivoted blade structure are mounted against a laterally curved, relatively rigid, side seal strip having centrally positioned on the protruding portion of the curve a series of laterally spaced soft and flexible longitudinally... | 12/30/1980 |
| 4213446 | Stove door operator A stove for burning combustible materials having a fire box at least in part lined with a fire resistant lining and having an opening across a front surface thereof, said opening defined by a hearth and an upper lip and equipped with pivotally mounted doo... | 07/22/1980 |
| 4128307 | Device for controlling the incidence of heat and light radiation, particularly for greenhouses and the like A device for controlling the incidence of heat and light radiation on a growing area of a greenhouse or the like comprises slats of a non-self-supporting material which are tensioned to hold them in shape. The slats are arranged in parallel side-by-side r... | 12/05/1978 |
| 4103601 | Air grille components and air grille therefrom A group of novel components for use in a composite air grille including an air director blade assembly having parallel blades and blade supporting bars at each end, and including a novel form of blade therefor, and including novel frame components, and an... | 08/01/1978 |
| 4014253 | Adjustable diffusers Adjustable diffusers of the type employed for control of flow of air into or out of a space. The diffusers according to the invention have a louvered face plate and have plural parallel vanes behind the face plate each movable between closed and opened po... | 03/29/1977 |
| 4005662 | Armor window An armor window through which air, sound and sight without inversion will pass freely yet sight can be selectively obstructed and at all times the flight of a propelled element at any angle will be obstructed by at least two spaced angle iron members with... | 02/01/1977 |
| 3991518 | Adjustable louver shutter A louver shutter having a louver slat adjusting device provided with a driving member moving up and down along a supporting frame provided intermediate the side frames of the louver shutter so that, when said driving frame is moved up and down relatively ... | 11/16/1976 |
