Winter scene room or space study
Patent 5407392 Issued on April 18, 1995. Estimated Expiration Date: 
April 18, 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.
April 18, 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 ReferencesIndoor ski slope and apparatus for making snow thereon Apparatus for producing fog Patent #: 5156333 InventorApplicationNo. 768204 filed on 10/24/1991US Classes:472/65, Illusion caused by visual imitation of event occurring in nature (e.g., rain, snow, fire, etc.)472/57, ILLUSION OR STAGE DEVICE472/90For foot-attached gliding vehicle (e.g., ski slide, ice skating surface, etc.)ExaminersPrimary: Friedman, Carl D.Assistant: Kent, Christopher T. Foreign Patent References
International ClassA63C 019/10Foreign Application Priority Data1989-04-25 FIAbstractA winter scene space study uses a space separated from the surroundings by transparent walls. The space is provided with refrigerator equipment as well as with equipment for producing water vapor and water jets or running water in the space. Temperature of the space is controlled or set in a manner that water vapor crystallizes into snow crystals and/or frost or water jets or running water at least freeze. By arranging the temperature to fluctuate on either side of 0° C., the ice, frost and/or snow crystals can be alternately melted and re-formed. By adjusting temperature and the amount of water vapor properly, it is possible to create snowfall in the space. | |
