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. 15, 1992
Filed:
Sep. 28, 1990
Applicant:
Inventors:
Osman Ahmed, Madison, WI (US);
Steven A Bradley, Prairie Village, KS (US);
Steven L Fritsche, Mundelein, IL (US);
Assignee:
Landis & Gyr Powers, Inc., Buffalo Grove, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01L / ;
U.S. Cl.
CPC ...
738659 ; 454 56 ;
Abstract
Fume hood controller apparatus includes a computing means, together with associated memory, which can be configured for horizontally and/or vertically moveable sash doors by inputting the necessary dimensions of the sash doors and other structural features, such as the upper lip height, frame widths and the like. The apparatus rapidly calculates the size of the uncovered area of the fume hood as a functions of the position of the sash doors.