ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,214,409, issued on Feb. 4, was assigned to TOYO SEIKAN GROUP ENGINEERING Co. Ltd. (Yokohama, Japan).
"Seaming device" was invented by Shinichiro Henda (Yokohama, Japan), Kazuki Takahashi (Yokohama, Japan) and Kazumoto Obata (Yokohama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A seaming device can prevent the leakage of a lubricating oil from the in-machine housing of a chuck unit into a seaming operation space, prevent the occurrence of a defective product contaminated by the lubricating oil, and eliminate heat elongation due to heat generation to accurately maintain a seaming dimension. A seaming device includes: a chuck unit that positions a...