Patents by Inventor Wu-Zhen Lan

Wu-Zhen Lan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Rapid coupler
    Patent number: 5628343
    Abstract: A rapid coupler comprises a main body and an auxiliary coupler. The main body has a main tube and a coupling tube at the rear of the main tube. The auxiliary coupler has a retaining pipe and a coupling pipe in front of the retaining pipe. A first compression spring and an elastic plug are inserted in the main tube. A second compression spring and an elastic block are inserted in the retaining pipe. The main body couples with the auxiliary coupler.
    Type: Grant
    Filed: March 13, 1996
    Date of Patent: May 13, 1997
    Inventor: Wu-Zhen Lan