Patents by Inventor Ming-Ying Guo

Ming-Ying Guo 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).

  • Exterior lever lock device with a clutch assembly
    Patent number: 7870772
    Abstract: An exterior lever lock device with a clutch assembly is mounted on a door, is connected to a bolt and an indoor lever lock device and has a lever assembly, a driving assembly, a clutch assembly and a driven assembly. The driven assembly has an inner sleeve and a locking panel fastened to the clutch assembly and selectively engaging the inner sleeve. Therefore, whenever the lever lock is locked or unlocked, as long as there is a turning force applied to the lever assembly, the lever assembly turns and is not broken easily. An endurance of the exterior lever lock device is prolonged for improved lock performance.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: January 18, 2011
    Assignee: Eversafety Precision Industry (Tianjin) Co., Ltd
    Inventors: Ming-Ying Guo, Xiu-Feng Liu