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:
Jul. 07, 1998
Filed:
Jul. 01, 1996
Applicant:
Inventor:
Nicolae Ghitea, Jr, Tigard, OR (US);
Assignee:
Freightliner Corporation, Portland, OR (US);
Primary Examiner:
Int. Cl.
CPC ...
G05D / ; F24F / ;
U.S. Cl.
CPC ...
165 111 ; 165248 ; 236 94 ; 454229 ;
Abstract
A ventilation display system determines when a ventilation system has remained in recirculation mode for a predefined time, and in response generates a stale air alert message inside the cab of a truck. The system can generate messages alerting the driver that the HVAC system has switched into recirculation mode, and alerting the driver that the recirculation mode has remained active for the predefined time. When equipped with a CO.sub.2 sensor, the system can generate air quality messages based on either the status of the recirculation mode or the level of CO.sub.2 in the cab of the truck or both.