US Patent Issued to DAIKIN INDUSTRIES on April 22 for "Tube assembly, compressor, refrigeration apparatus, and method of manufacturing tube assembly" (Japanese Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,729, issued on April 22, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).

"Tube assembly, compressor, refrigeration apparatus, and method of manufacturing tube assembly" was invented by Kenji Nagahara (Osaka, Japan), Yoshitomo Tsuka (Osaka, Japan), Tetsuya Nagamichi (Osaka, Japan) and Kousuke Araki (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A tube assembly includes inner and outer tubes, and a brazing material. The inner tube has an outer peripheral surface first portion and an outer peripheral surface second portion. The outer tube has an inner peripheral surface first portion and an inner peripheral surface second portion. T...