US Patent Issued to Mastery Investment on Nov. 3 for "Four-cylinder air compressor" (Chinese Inventors)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,724, issued on Nov. 3, was assigned to Mastery Investment LLC (Kowloon KLN, Hong Kong).

"Four-cylinder air compressor" was invented by Daisy Lina Kwok (Kowloon KLN, Hong Kong), Jianjun Tan (Kowloon KLN, Hong Kong) and Ye Lu (Kowloon KLN, Hong Kong).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a four-cylinder air compressor comprising an electric motor, a first crankcase, and a second crankcase. The first crankcase houses a first crankshaft and a second crankshaft, while the second crankcase houses a third crankshaft and a fourth crankshaft. The first crankcase houses a first cylinder and a second cylinder, while the...