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:
Oct. 03, 2000
Filed:
Jul. 27, 1999
Applicant:
Inventors:
George J Janu, Brookfield, WI (US);
James Reisdorfer, Oregon, WI (US);
Assignee:
Johnson Controls Technology Company, Plymouth, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F24F / ;
U.S. Cl.
CPC ...
454229 ; 165249 ; 454236 ;
Abstract
An air handling unit for a heating, ventilating and air conditioning system of a building has a plurality of exhaust fans. The exhaust fans are sequentially activated in response to the amount of air flowing into the air handling unit from outdoors. Thus the amount of air exhausted from the building approximates the amount of air drawn into the building through the air handling unit. This operation maintains the static air pressure within the building to acceptable levels.