Ventilation method and means for the same
Patent 5331991 Issued on July 26, 1994. Estimated Expiration Date: 
October 8, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 8, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2194497 2463090 2910994 3118401 3261659 3265059 3272199 3766844 Isolation module Inflatable camper InventorAssigneeApplicationNo. 958178 filed on 10/08/1992US Classes:135/93, Ventilating52/2.11, SHAPED OR STRENGTHENED BY FLUID PRESSURE135/91, With heating, lighting, or ventilating454/228, HAVING FORCED RECIRCULATION454/236For use with heating and cooling meansExaminersPrimary: Friedman, Carl D.Assistant: Wood, Wynn E. Attorney, Agent or FirmForeign Patent References
International ClassE04H 015/14Foreign Application Priority Data1991-11-15 SEAbstractThe invention relates to a method of establishing and maintaining in sealed tents or the like mobile units, an environment which is independent of the surroundings with regard to temperature and contamination. The invention is characterized by taking air from the surroundings, extracting contaminated particles and gas from the air by filtration, and causing the air to pass into the mobile unit so as to establish a predetermined air pressure which is higher than the air pressure of the surroundings. The filtered air is mixed with air recycled from within the mobile unit when the aforesaid predetermined air pressure has been reached and mixing of the filtered air with recycled air is continued for as long as the internal air pressure is equal to or greater than the predetermined air pressure. The air mixture is heated or cooled to a predetermined temperature and is then distributed essentially uniformly in the mobile unit and filtered, in conjunction therewith, so as to extract any remaining particles and gas. The invention also relates to an arrangement for carrying out the method. | |
