The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 27, 1990
Filed:
Nov. 25, 1988
Marshall M Monroe, Glendale, CA (US);
The Walt Disney Company, Burbank, CA (US);
Abstract
A fog producing apparatus for suspending fine particles of water in air in an economical and reliable manner. Ultrasonic transducers potted in an electrically insulative and liquidproof material are placed in a container in which a predetermined water level is maintained by a float and valve device. Alternatively, the potted transducers are suspended below floats floating on the surface of the water whereby the critical water depth over the transducers is automatically maintained. In addition compressed air is conducted through the emanating fog plumes to provide a more homogeneous and dispersed fog effect. A copious amount of fog can thereby be efficiently and reliably produced to create theatrical or visual effects.