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:
Dec. 14, 1993
Filed:
Dec. 04, 1992
Applicant:
Inventors:
Akira Kataoka, Osaka, JP;
Yasuhiro Kasahara, Tokyo, JP;
Assignees:
Ushio U-Tech Inc., Tokyo, JP;
Dentsu Prox Inc., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05B / ; G03B / ;
U.S. Cl.
CPC ...
353 28 ; 353122 ; 359443 ; 239 18 ; 239 20 ;
Abstract
A method and apparatus for forming a fog screen for use in the projection for display of an optical image which comprises disposing a pair of substantially parallel air curtains and blowing a fog into the space defined by and between the air curtains. The fog screen is high and uniform in density and can be utilized for forming a well-defined image thereon that is free from distortions or interruptions.