US Patent Issued to HOYA on Aug. 19 for "Hard disk drive including annular spacer with inclined region on main surface" (Japanese Inventor)

ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,394,439, issued on Aug. 19, was assigned to HOYA Corp. (Tokyo).

"Hard disk drive including annular spacer with inclined region on main surface" was invented by Masao Takano (Akishima, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hard disk drive includes a magnetic disk, and an annular spacer. The annular space includes two main surfaces, an inner circumferential surface, an outer circumferential surface, and a chamfered surface present between the outer circumferential surface and each of the two main surfaces. The annular spacer is disposed such that one of the two main surfaces is in contact with the magnetic disk. At least one main surface ...