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. 06, 1990
Filed:
Jan. 03, 1989
Applicant:
Inventors:
Michael S Curtis, Glorieta, NM (US);
Robert W Weeks, Jr, Los Alamos, NM (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F24F / ;
U.S. Cl.
CPC ...
98-15 ; 981154 ;
Abstract
The apparatus includes a device adapted for removing contaminated air from a controlled area, cleansing this air using suitable filtration devices, and returning air having a safe level of contaminants mixed with a portion of fresh air or solely fresh air to the controlled area. The apparatus further includes barrier means for preventing contaminants from exiting the controlled area except through the air removal device which can be located either inside or outside of the controlled area.