ALEXANDRIA, Va., June 9 -- United States Patent no. 12,285,599, issued on April 29, was assigned to SHIBUYA Corp. (Kanazawa, Japan).
"Tube pump" was invented by Kenshi Yoshimoto (Kanazawa, Japan) and Kosho Matsuzaki (Kanazawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tube pump having a housing in which a large diameter flexible tube is arranged along a lateral wall formed to have a substantially horseshoe shape, and a roller that moves along the lateral wall of the housing. Between a blockage section which pressures and blocks the large diameter tube and a separation section shaped so as to gradually extend away from the rotation center, the lateral wall is provided with a pressure release sect...