Industry Patents

Patent: 5711481

Process and Apparatus for Creating Fog for Special Effects

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Patent Number:	5711481
Title:	Process and Apparatus for Creating Fog for Special Effects
Abstract:	The present invention's fog generating apparatus has a mixing chamber. A steam nozzle in the mixing chamber injects high pressure steam into the chamber. The injected steam entrains ambient air, pulling it through an air opening into the mixing chamber. The steam and air mix to form humid air. Cryogenic fluid, preferably liquid nitrogen, is injected through a nozzle, which is positioned in the path of the humid air. The cryogenic fluid rapidly cools the warm, humid air which generates large quantities of fog. Depending of the way the steam is injected and the design of the mixing chamber, the present invention can generate slow or fast moving fog.
Country of Issue:	US
First Named Inventor:	MacDonald, Bradley
Assignee:	Spectra F/X
Continuation or Divisional of:
International Classification:	A01G 15/00
US Classification:	239/2.1
Issue Date:	01-27-1998
Filing Date:	12-29-1995
Application :	578199
Notes:
Link to Patent at freepatentsonline.com:	5711481 at Freepatentsonline
Link to World Patent Family¹:	World Patent Family at European Patent Office
Link to Google Patents¹:	5711481 at Google Patents

1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.

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