US Patent Issued to Lianying Yu on Oct. 14 for "Luggage caster for maintenance and replacement and vertical shaft thereof" (Chinese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,441,136, issued on Oct. 14, was assigned to Lianying Yu (Shanghai).

"Luggage caster for maintenance and replacement and vertical shaft thereof" was invented by Jiandao Chen (Wenzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A luggage caster for maintenance and replacement includes a wheel frame, a vertical shaft, and trolley wheels in a clearance fit with the wheel frame. The vertical shaft is configured to rotate axially within a vertical shaft hole of the wheel frame. a bottom end of the vertical shaft defines a riveting hole for forming a riveting flange. A top end of the vertical shaft is provided with a limiting plate that cooperates wi...