ALEXANDRIA, Va., June 16 -- United States Patent no. 12,308,706, issued on May 20, was assigned to AISIN Corp. (Kariya, Japan) and AMINO Corp. (Fujinomiya, Japan).
"Manufacturing method of rotor" was invented by Yutaka Hara (Kariya, Japan), Takehiko Adachi (Kariya, Japan), Mariko Saito (Kariya, Japan), Noriyuki Watanabe (Fujinomiya, Japan) and Yuji Terauchi (Fujinomiya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotor includes: a shaft having a tubular shape; and a rotor core including a through hole into which the shaft is inserted and that has a regular polygonal shape. The shaft is fixed to the rotor core by hydroforming. Of an outer peripheral surface of the shaft, a core contact part that is...