Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 8075375 | Method and apparatus for balancing an HVAC system A method and apparatus for balancing an HVAC system. The method involves using a plate which is circular in shape and has four inner cut-out portions which are capable of being manually removed by an operating engineer. To reduce flow to a minimum, all four rings ar... | 12/13/2011 |
| 8029345 | Fire stop outlet for small duct, high velocity air distribution systems A fire stop apparatus for a small duct, high velocity air distribution system is assembled to a duct opening and includes a cylindrical support wall that supports a cylindrical band of intumescent material that expands and closes the duct opening when subjected to t... | 10/04/2011 |
| 8016652 | Airflow diffuser (diffuser fan) and air conditioner An airflow diffuser (diffuser fan) comprises: a blade wheel formed of blade members 30, spoke members 40 and a hub member 50; a shaft member 20 forming an axis of rotation of the blade wheel; and a suspension member 10 suspending t... | 09/13/2011 |
| 7887401 | Ventilation valve for heaters, comprising a holding body and an axially displaceable valve body A ventilation valve (2) for heaters (1) or heating installations is provided, with the valve including a holding body (4) and a valve body (5) which can be axially displaced in the holding body (4) and closes a ventilation channel ... | 02/15/2011 |
| 7635297 | Blow out grill and air conditioning ventilating system using the grill There is provided a blow out grill including a duct connecting port communicated with a duct, an indoors-side opening communicated with inside of a room, a panel base portion forming a wind blowing path of carried air between the indoors side opening and an outdoors... | 12/22/2009 |
| 7361082 | System, device and method for ventilating a room A system and method for ventilating a room in which the system has at least one air supply unit and one air exhaust unit. The air inlet unit has a guiding slot diffuser for guiding an airstream in a certain direction, such that a patient, lying down in a bed on his ... | 04/22/2008 |
| 7328478 | Register inlet apparatus for a central vacuum cleaning system An inlet apparatus for central vacuum cleaning systems is described that can be integrated with registers commonly used with heating and air conditioning vents in residential or commercial buildings. In particular, the apparatus opens to provide a vacuum inlet that ... | 02/12/2008 |
| 7201650 | Air vent for a ventilation system An air vent for a ventilation system in a vehicle is disclosed that has an air circulation chamber (1) defined by a housing (9) that has a generally bulged shape. An inflow duct (2) is connected to this housing and opens into the circulation cha... | 04/10/2007 |
| 7108600 | Air duct register The present invention provides an air duct registrer for adding forced air (heat, air conditioning), exhausting air or simply to balance air quality. The air duct register has a manifold and is designed with a removable manifold collar connectible to the flexible or... | 09/19/2006 |
| 7022010 | Air conditioner with a circular air diffuser system A ceiling has an upper surface, a lower surface and a circular aperture. A boot has a cylindrical lower section and a large circular cross sectional configuration and with a cylindrical upper section and a small circular cross sectional configuration. The diameter o... | 04/04/2006 |
| 6960130 | Fabric air duct with directional vent A fabric air duct of an HVAC system includes a discharge air register with an air deflector that extends along the length of the duct. Rotating or twisting the deflector adjusts the volume and/or direction of the air being discharged from the register. Even though t... | 11/01/2005 |
| 6942563 | Air-guiding appliance An air-guiding appliance (10) for the directionally defined introduction (R) of air (L) supplied on the rear side (20) of the appliance into a space (22), in particular interior of a vehicle, having a housing (26), at least one duct (2... | 09/13/2005 |
| 6887149 | Cooling system with mesh grill and directional louvers A method and apparatus of a cooling system having a housing with an intake and an output vent. The output vent comprising a framework configured to couple to the housing. Directional louvers pivotably mounted in the framework. A mesh grill mounted on the framework w... | 05/03/2005 |
| 6814660 | HVAC localized air filter assembly system A heating ventilation and cooling (HVAC) localized air filter assembly system for capturing particulate material and contaminants distributed through HVAC systems. The system includes a least one frame assembly positionable over a HVAC duct and having a front wall a... | 11/09/2004 |
| 6749499 | Cover for register and register opening A register cover for a register opening in a floor includes a body with a pair of legs extending from and pivoted to the body. Each of the legs may pivot between extended and retracted positions. The legs are adapted to be inserted into the register opening when the... | 06/15/2004 |
| 6682413 | Fluid control valve A valve for controlling a flow of a fluid between a first environment to a second environment is provided. The valve includes a frame that fits within an aperture in a divider separating the first environment from the second environment. Additionally, the... | 01/27/2004 |
| 6397933 | Method and device for cooling of electronic/computer equipment and use thereof A cooling system for cooling electronic/computer equipment in an equipment room in a station. A fan device causes heat exchanging air circulation between a battery and the equipment, where the air is guided by an air guiding device. The air guiding device... | 06/04/2002 |
| 6241603 | Ventilation filter mechanism A filtering system which is secured to a traditional air register. The filter uses a flange adapted to encircle the outlet of the traditional air register. Connected to the flange is an air filtering material which collects the dust and pollen at the air ... | 06/05/2001 |
| 6168518 | Vent structure with slotted rectangular outlet A vent structure with a slotted rectangular outlet includes a cylindrical connector section to mate with a cylindrical duct, a flared and curved transition section, and a rectangular outlet section. The structure is formed in such a manner that turbulence... | 01/02/2001 |
| 6139426 | Molded polymer air diffusing screen A molded plastic air diffusing screen in an air supply system provided for effectively diffusing or deflecting air supplied through a coreless or vane-free duct such that undesirable air turbulence and draft/currents are substantially diminished; more par... | 10/31/2000 |
| 6135877 | Box- or screen-like supply air terminal device and a nozzle module or nozzle unit therefor A supply air terminal device (1) of box-like or screen-like construction has a front wall (5) in which there are disposed a plurality of groups (10) of slots (7) with the groups and the slots in each group mutually spaced apart. Each group of slots is all... | 10/24/2000 |
| 6010401 | Germ removing device for air supply systems A device for catching and removing germs, viruses and the like from air flowing in an air path of an air supply system. The device includes a cylindrical member or members mounted in the air flow path so that air passing along the air flow path impinges o... | 01/04/2000 |
| 5984774 | Air distribution unit and system A portable self-contained air distribution unit, and system incorporating same, are useful in assisting in the distribution of air within a vehicle. The unit comprises an elongate conduit having an inlet, an outlet and a top portion spaced from a bottom p... | 11/16/1999 |
| 5876281 | Pulse air jet generator A pulse air jet generator being used for an air shower apparatus. An air flow restricting member, which is so configured as to cross an air flow blown off from an air blowoff nozzle intermittently at part of the rotational locus thereof and to rotate by t... | 03/02/1999 |
| 5863310 | Grill/filter mounting assembly A grill filter assembly for mounting in the exit or entrance wall opening of a forced air duct wherein the grill plate may be installed in a hinged relation to the duct enabling easy access to the duct opening. In a preferred embodiment, the grill face pl... | 01/26/1999 |
| 5810662 | Compact smoke and fire damper with over center latch An adjustable damper for controlling air flow between portions of a building includes a plurality of vanes positioned in a frame opening, which vanes are selectively, simultaneously rotatable between open and closed positions. A reversible motor and an ac... | 09/22/1998 |
| 5733191 | Directional vent register A directional vent register having a primary grill in a generally conventional position in a top plate which pivots to expose and open a secondary grill which directs the air in a forward direction.... | 03/31/1998 |
| 5720660 | Protective cover for a heat register A protective cover for heat registers, heating ducts, cooling vents or the like, including a main panel having an open grid pattern for covering the surface of a register, duct or vent; four side walls connected to the main panel for overlapping the sides... | 02/24/1998 |
| 5643081 | Vent screen and vent apparatus A vent screen and vent apparatus includes a vent duct along with an exterior grill connected to one end of the vent duct. The exterior grill includes a screen access opening. A vent screen support assembly is connected to the vent duct between the vent du... | 07/01/1997 |
| 5553417 | Fluid distribution panel and method A fluid distribution panel (A) is illustrated, especially for use in a growth chamber, utilizing a plurality of spaced conical surfaces (B) which taper outwardly from a plenum into an enlarged fluid discharge opening for controlling the distribution of ai... | 09/10/1996 |
| 5479984 | Removable positive shut-off panel A register of a forced air system is sealed by placing a heavy flexible magnetic panel over the register and adhering the entire panel to the entire register for preventing escape of forced air from the register. The flexible magnetic panel is used on wal... | 01/02/1996 |
| 5435781 | Register with multiple controls A register for controlling air flow to or-from a vent has a front with a grille for allowing full air flow. Plates within the register are movable over the vent opening to affect the air flow. The plates may include a louver to redirect the air flow, and ... | 07/25/1995 |
| 5389037 | Method and apparatus for improving the respiratory efficiency of an infant A method and apparatus for reducing respiratory abnormalities in infants and the incidence of crib death by providing a flow of room air to a sleeping infant's environment to stimulate breathing. In a preferred embodiment of the invention, room air is del... | 02/14/1995 |
| 5360373 | Upwelling-air distributor for air-conditioning systems An upwelling-air distributor for air-conditioning systems. It comprises two concentric, air-permeable cylinders, an outer cylinder (1) and an inner cylinder (2). The cylinders accommodate one or more diaphragms (10 and 11) in the form of flat rings. The d... | 11/01/1994 |
| 5346426 | Method and an apparatus in ventilation A method and apparatus for the mechanical ventilation and heating of a premises with improved removal of impurities from air present in the premises. At least one suction extraction device is provided for removing polluted or stale air in a region adjacen... | 09/13/1994 |
| 5338254 | Increasing jet entrainment, mixing and spreading A free jet of air is disturbed at a frequency that substantially matches natural turbulences in the free jet to increase the entrainment, mixing, and spreading of air by the free jet, for example in a room or other enclosure. The disturbances are created ... | 08/16/1994 |
| 5282367 | Refrigerated food preparation table and method A refrigerated food preparation table having an evaporator cooling coil and heat transfer fins which are baffled to create two air flows which are cooled to different temperatures. One air flow passes through a laminar air screen and across an open top of... | 02/01/1994 |
| 5266091 | Air climate control system register filter An air filter for use in combination with a climate control system having a register with an outwardly extending perimeter flange and an exposed surface, the outwardly extending perimeter flange supporting the register when the register is installed over ... | 11/30/1993 |
| 5254039 | Playground construction An improved playground construction is provided and consists of inflatable dome-shaped ribs placed one next to each other on a layer of padding on a hard ground surface of a playing field. Filler material is placed between the tops of the ribs with a stri... | 10/19/1993 |
| 5230656 | Mixer ejector flow distributor An apparatus for attaining improved flow uniformity through and at the exit of an air duct by mixing and distributing the air flow. The apparatus has a wall containing a plurality of convoluted corrugations or lobes arranged in conjunction with an airfoil... | 07/27/1993 |
