Patents by Inventor Ray L. Tserng

Ray L. Tserng 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).

  • Window grille latch device
    Patent number: 4856229
    Abstract: A window grille latch device comprising an arm with a hollow tube which has a pair of steel balls received in a pair of holes formed in the hollow tube, a latch means having a inner hollow tube and a outer hollow tube to receive the hollow tube, a convex ring recess formed in the inner hollow tube to receive the steel balls, a slide bar received in the inner hollow tube to contact with the steel balls, a cable with a cover connecting with the rear end of the slide bar and a control means connecting to the cable for releasing the latch means.
    Type: Grant
    Filed: May 20, 1988
    Date of Patent: August 15, 1989
    Assignee: Chuan Erh Industrial Co., Ltd.
    Inventor: Ray L. Tserng