ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,830, issued on May 13, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).

"Scroll compressor and refrigeration apparatus" was invented by Taiga Arakane (Osaka, Japan), Naoki Shimozono (Osaka, Japan), Tomomi Yokoyama (Osaka, Japan) and Takafumi Yamamoto (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A scroll compressor includes a movable scroll, a fixed scroll having a suction passage, a suction pipe, and a suction check valve to open and close an open end of the suction pipe. The suction check valve includes a valve body, a valve seat, and a compression spring to bias the valve body toward the open end of the suction pipe. The valv...