ALEXANDRIA, Va., July 15 -- United States Patent no. 12,663,188, issued on June 23, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).

"Heat source unit and air conditioner" was invented by Takaya Nakanishi (Osaka, Japan) and Yuta Fukuyama (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heat source unit includes a first switching valve configured to switch between a first state where the first switching valve brings a high and low pressure gas connection pipe and a discharge side of a compressor into communication with each other and a second state where the first switching valve brings the high and low pressure gas connection pipe and a suction side of the compressor into communication wi...