Patents by Inventor Hui Yao

Hui Yao 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).

  • Automatic rocking device
    Patent number: 5258963
    Abstract: An automatic rocking device including a container with a curved base and having accommodated therein a timepiece, a power supply device, a delay circuit and an automatic rocking mechanism. When the motor gets power supply, it drives the mechanism to reciprocate along the axis of gravity of the container to cause the container to lose equilibrium and rock.
    Type: Grant
    Filed: March 4, 1993
    Date of Patent: November 2, 1993
    Inventor: Ching-Hui Yao