Patents by Inventor Lung W. Yen

Lung W. Yen 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).

  • Patent number: 5388599
    Abstract: The present invention relates to a retractable toothbrush and toothpaste holder which mainly consists of a cylinder assembly, a lifting member with a toothbrush and toothpaste tube attached thereto and being disposed inside the inner cylinder, and a rotating seat connected to a lower end of the cylinder assembly. Wherein, the cylinder assembly further consists of an inner cylinder and a sleeve being put over the inner cylinder, and the lifting member has two opposite tenons extending into two spiral grooves formed on an inner wall of the sleeve. When the rotating seat is rotated, the inner cylinder connected thereto is caused to turn, and the lifting member inside the inner cylinder is brought to move upward along the two spiral grooves of the sleeve, and thereby, enabling the toothbrush and the toothpaste tube attached to the lifting member to extend out of the cylinder assembly for use.
    Type: Grant
    Filed: January 13, 1994
    Date of Patent: February 14, 1995
    Inventor: Lung W. Yen