Patents by Inventor Edith Chang

Edith Chang 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).

  • Multi-stage bi-directional breath flow and blood circulation aider
    Patent number: 6383154
    Abstract: A multi-stage bi-directional breath flow and blood circulation aider is provided with a plurality of ratchet teeth arranged in one end of a positioning seat and an adapter respectively for being meshed with each other, and the positioning seat is covered with the adapter and a closure for multi-stage control of physical energy consumption by taking advantage of an eccentric rod of the adapter. A plurality of recessed grooves is formed on the eccentric rod for arranging two fixed belts so as to commit eccentric rotation to pull and release the belts reciprocally for physical gymnastic exercise.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: May 7, 2002
    Inventor: Edith Chang
  • Breath flow and blood circulation aider
    Patent number: D445194
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: July 17, 2001
    Inventor: Edith Chang