Patents by Inventor Chun-Lin Zseng

Chun-Lin Zseng 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: 6148462
    Abstract: The present relates to an improved structure of a multifunctional tooth-brush comprising a handle body, a bristles seat, an actuating rod, a teeth-polishing disc, a positioning peg and a spring. The bristles mounted on the bristles seat brushes the teeth when the tooth-brush is applied to the teeth in horizontal direction. The polishing disc mounted on the bristles seat polishes the teeth during the process of brushing the teeth.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: November 21, 2000
    Inventor: Chun-Lin Zseng
  • Patent number: 6098230
    Abstract: A manually operated toothbrush which will move up and down at the same time when moving to and fro, includes a head provided with bristles at a front end thereof and being cylindrical in shape at a rear end thereof, the rear end having a curved groove formed with a circular recess, an elongated tubular handle having a cylindrical cavity at a front end thereof adapted to receive the rear end of the head, the handle having a circular through hole aligned with the circular recess and a drain hole at a rear end thereof, a compressed spring fitted within the handle, a T-shaped pin having a circular projection at the upper end and a smaller circular protuberance at the lower end, the T-shaped pin extending through the circular through hole of the handle and the curved groove of the head to join the handle and the head together, whereby the toothbrush will move up and down at the same time when the toothbrush is moving to and fro as desired.
    Type: Grant
    Filed: April 13, 1999
    Date of Patent: August 8, 2000
    Inventor: Chun-Lin Zseng