ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,710,684, issued on Aug. 18, was assigned to Shenzhen Dongzheng Optical Technology Co. Ltd. (Shenzhen, China).
"Lens mount replacement device" was invented by Songjian Yao (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lens mount replacement device. A first notch and a second notch communicated with each other are formed in a base, an ejector pin is provided in the first notch, a button is provided in the second notch, the ejector pin can move under the action of the button, a first slot is formed in the base, a first reverse slot of a sliding pressing ring is formed in the first slot in a penetrating mode, a mount rotating ring and a ...