ALEXANDRIA, Va., July 3 -- United States Patent no. 12,344,025, issued on July 1, was assigned to Shin Feng (Rowland Heights, Calif.).
"Writing implement" was invented by Shin Feng (Rowland Heights, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A writing implement comprises a main body and a cap, and the main body comprises a plunger. An undercut is formed on an inner wall of the cap. When the cap is engaging to the main body, a load from the inner wall of the cap is applied to the plunger. The cap is interlocked to the main body when the load against the plunger is reduced or removed. With such a structure, the writing implement can be attached and detached smoothly between two detachable parts such...