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. 26, 1999
Filed:
Jun. 18, 1998
Katsuhiko Samukawa, Oobu, JP;
Yuji Honda, Okazaki, JP;
Tatsumi Kumada, Gamagori, JP;
Tomoyuki Kako, Toyota, JP;
Denso Corporation, Kariya, JP;
Abstract
An automotive air conditioning system designed to switch a ventilation mode to an air recirculation mode automatically when the contamination of outside air is greater than a given level. The system includes a mode selection prohibiting circuit that prohibits the switching between the air recirculation mode and the ventilation mode and operates the air conditioning system in the ventilation mode when the vehicle is traveling at high speeds or when the outside temperature is relatively low. This allows fresh air having a relatively lower humidity to be drawn into the passenger compartment, thereby avoiding fogging of inner surfaces of windows of the vehicle.