Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7441588 | Heat exchanger unit The present invention provides a heat exchanger unit that can save space, even when performing air conditioning in addition to ventilation. The heat exchanger unit performs heat exchange ventilation with a supply air channel flowing from an outdoor space to an indoo... | 10/28/2008 |
| 7228657 | Climate control for a greenhouse A greenhouse has an exterior curtain wall structure formed by spaced tubular posts carrying external transparent panels and bottom non-transparent wall panels below a sill with the panels spanning the posts. A plurality of elongate benches is located within the inte... | 06/12/2007 |
| 6976337 | Energy-saving housing The invention provides energy-saving housing wherein the indoor temperature condition can be made comfortable throughout the year by a small amount of energy by suppressing loads on cooling and heating devices, and high airtightness and high heat insulation performa... | 12/20/2005 |
| 6974382 | Year round selective dehumidifying and humidifying apparatus and method Apparatus which may be used year-round for dehumidifying air in the enclosed space of a building to comfortably allow a higher temperature during summer conditions, for exchanging air in the enclosed space year-round with fresh air to provide a more healthful enviro... | 12/13/2005 |
| 6835128 | Ceiling mounted air filtering and distribution apparatus operated independently of any HVAC system A modular direct flow clean air delivery apparatus is disclosed that is particularly adapted for use in restaurants, banquet halls, meeting rooms, offices etc., where cigarette smoke and other pollutants need to be efficiently removed from the air in the room. The f... | 12/28/2004 |
| 6579170 | Rigid foam air duct system An air duct that comprises one or more air duct segments that comprises a polymeric cellular material, or foam. The ducts or segments may be part of an air duct system that comprises a primary air duct, at least one secondary air duct, and at least one br... | 06/17/2003 |
| 6514137 | Modular clean room plenum In accordance with the present invention, a modular clean room plenum is provided. This modular clean room plenum includes a rectangular plenum body with an air barrier forming a top surface of the modular clean room plenum and a ceiling grid forming a bo... | 02/04/2003 |
| 6328776 | Air-purifying system An air-purifying system for filtering and re-circulating room air. The air-purifying system includes a blower module, a first filter module, a second filter module and a supply module. The blower module defines a first inlet, a second inlet and an outlet.... | 12/11/2001 |
| 6132309 | Modular clean room plenum A modular clean room plenum includes a rectangular plenum body with an air barrier forming a top surface of the modular clean room plenum and a ceiling grid forming a bottom surface of the modular clean room plenum. The modular clean room plenums are atta... | 10/17/2000 |
| 5846128 | Air exchange and cleaning system for building enclosures, particularly indoor firing range An air exchange and cleaning system for building enclosures, particularly indoor firing ranges, which removes particulate matter, such as lead and other heavy metals, and gun powder residues and gases from the enclosure atmosphere. An air handler unit inc... | 12/08/1998 |
| 5531641 | Recreational vehicle air conditioner ceiling grille with register An air conditioning system for a recreational vehicle is provided having a rooftop mounted air conditioning unit with an outlet for conditioned air and an inlet for return air and an air distribution system. The air distribution system includes ducts moun... | 07/02/1996 |
| 5256105 | Washable seamless clean room A modular clean room structure in which the interior is finished without any seams between adjacent modules or crevices at the corners of the room such that the room can be easily sterilized. The seamless nature of the interior surface of the clean room e... | 10/26/1993 |
| 5149300 | Method of construction of pre-balanced air handling system An air handling duct system is provided wherein downstream duct segments are downsized proportionately relative to a immediate upstream duct segments including lateral outlets in order to maintain design air volumes in the upstream and downstream duct seg... | 09/22/1992 |
| 4880581 | Means and method for aseptic particle-free production of articles An apparatus and method for aseptic, particle-free production of articles. A shroud is placed around at least a portion of the device which produces the articles to substantially isolate that portion from the external environment. The device for producing... | 11/14/1989 |
| 4676144 | Clean room system A clean room system includes a processing room containing production equipment, a technical room adjacent the processing room and containing machinery for actuating the production equipment, and a wall separating the production equipment from the actuatin... | 06/30/1987 |
| 4589476 | Air ventilation and filtration apparatus Apparatus for exchanging air within an enclosure with outside air while subjecting air within the enclosure to gas filtration and/or electronic air cleaning. The apparatus includes a two-position valve to provide an intake cycle and an exhaust cycle; duri... | 05/20/1986 |
| 4531454 | Air conditioning system A fan coil unit 13 is mounted in an underfloor plenum with its intake 14 flush with the floor. The unit 13 feeds fan air terminals 11 and 12 each of which has an aperture 26 which vents air into the plenum space when the fan of the relevant unit is not ru... | 07/30/1985 |
| 4495113 | Rotary mixing damper method and means An improved air stabilization system and method used in a building ventilation system. The improvement comprises positioning rotatably a single mixing damper blade within a damper blade housing such as to regulate the air flow through air openings within ... | 01/22/1985 |
| 4351476 | Air filtering system and method of operation An air filtering unit for blowing only filtered air into a room of a building having a central air conditioning air duct outlet therein, includes an electric blower unit having an air inlet and an air outlet. An air guide system conducts all air flowing t... | 09/28/1982 |
| 4255176 | Combined air purifier and destratifier A combined unit for purifying and destratifying heated air including a first inlet at a lower area for receiving air to be purified, an air purifier including an air demister and an electrostatic precipitator, a fan for drawing air through the first inlet... | 03/10/1981 |
