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:
Jan. 30, 1990
Filed:
May. 18, 1989
Tadahiro Takahashi, Konan, JP;
Diesel Kiki Co., Ltd., Tokyo, JP;
Abstract
An air conditioning control system for an automotive vehicle equipped with windowpanes has a humidity sensor for sensing humidity on the inner surface of a windowpane, and a temperature sensor for sensing temperature of the inner surface of the windowpane. When the sensed humidity on the inner surface is higher than a first predetermined value corresponding to the sensed temperature of the inner surface, the inner surface is determined to be in a state immediately before a mist occurs, and demisting control is executed. A second predetermined value lower than the first predetermined value by a predetermined amount is determined after the start of the demisting control. When the sensed latest value of the humidity on the inner surface becomes lower than the second predetermined value, it is determined that the mist has been cleared away, and the demisting conrol is stopped. The second predetermined value is determined based upon the sensed latest value of the temperature of the inner surface, and is set to a higher value as the sensed latest value of the temperature is higher insofar as the sensed latest value of the temperature is lower than a predetermined value. The first and second predetermined values may alternatively be determined based upon the difference between temperature within the vehicle compartment and the temperature of the windowpane inner surface.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile