Patents by Inventor Chongwei Guo

Chongwei 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).

  • Patent number: 6895977
    Abstract: A dental flossing tool for dispensing floss for cleaning the user's teeth. A handle body surrounds a cavity and has a lead riser from which dental floss is dispensed for use. The floss is wound upon a spool that rotates inside the cavity. Floss is paid out from the spool and emerges from a hole in the tip of the lead riser. A button or handle is slidably mounted upon the apparatus for controlling the longitudinal movement of a retainer within the cavity of the apparatus. By sliding the button handle forward and backward, the user can disengage and engage the retainer with a baffle attached to the spool inside the body of the apparatus. When the retainer is in contact with the baffle, the spool is prevented from rotating, thereby stopping any further floss from being dispensed. When the retainer is disengaged out of contact with the baffle, the spool is free to rotate to pay out floss.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: May 24, 2005
    Inventor: Chongwei Guo
  • Publication number: 20030230320
    Abstract: The present invention related to tooth cleaning tool, especially, related to a dental flossing tool using dental floss to clean tooth. The handle of the present invention is composed of a cavity handle body having a lead riser and a handle cover connecting to the port of the handle body. The said handle body has longitudinal sliding groove. The two sides of pushing handle of locking wire are slidely engaged to the sliding groove. A spool of dental floss are provided lengthways in the handle, whose circular front baffle supporting axis of handle cover. The arranges a retainer having thread hole on the bottom surface of the pushing handle of locking wire, the said retainer frictionally engaging to the circular front baffle of the spool at the position of locking wire. The front end of the handle body arranges the protector of said lead riser.
    Type: Application
    Filed: May 30, 2003
    Publication date: December 18, 2003
    Inventor: Chongwei Guo