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:
Mar. 07, 1989
Filed:
Jul. 23, 1986
Yasutsugu Kawaguchi, Tochigi, JP;
Kiyoshi Fuji, Tochigi, JP;
Takeshi Mitsuta, Tochigi, JP;
Kiyoshi Nagasawa, Tochigi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a method and apparatus for controlling an air-conditioning apparatus of a type driving a compressor motor from a DC power source through an inverter, the present current value of a DC input to the inverter is detected, and, when the detected current value is larger than a current limit value, the rotation speed of the compressor motor is decreased by a predetermined value. The current limit is controlled so that it changes linearly relative to the rotation speed of the compressor motor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile