Patents by Inventor Chun Yuan Chang

Chun Yuan 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).

  • Patent number: 6189711
    Abstract: A support device for receiving and supporting official device elements includes a casing rotatably secured on a base. The casing includes two groups of opposite partitions disposed in a peripheral wall for forming two or more spaces within the casing and for receiving the official device elements. The partitions are parallel to each other for forming one or more channels and for receiving discs or the like. The partitions each includes a curved inner end connected to each other for forming a barrel, and include a height greater than the peripheral wall for allowing the official device elements to be easily obtained.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: February 20, 2001
    Inventor: Chun Yuan Chang
  • Patent number: 5980370
    Abstract: A saw includes a C-shaped frame having a C-shaped channel and having a beam and an arm dependent downward from the front portion of the beam and a handle secured to the rear portion of the beam. An endless abrasive coating cable is engaged in the channel of the frame and includes an exposing portion disposed between the arm and the handle. A fastener is secured to the lower portion of the arm and includes a passage for receiving the cable and for securing the cable to the frame.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: November 9, 1999
    Inventor: Chun Yuan Chang
  • Patent number: 5704533
    Abstract: A stapler includes a base and a chute and a cover pivotally coupled together at a rear pivot shaft. The base includes a roller extended downward beyond the middle portion. A lever includes a front portion pivotally coupled to the front portion of the cover and includes a rear handle for operating the lever, and including a block formed in the middle portion for engaging with the roller and for forcing the base toward the chute and the cover. The block includes a tapered surface for engaging with the roller and for allowing the user to operate the lever with less force.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: January 6, 1998
    Inventor: Chun Yuan Chang
  • Patent number: D413502
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: September 7, 1999
    Inventor: Chun Yuan Chang
  • Patent number: D428927
    Type: Grant
    Filed: November 6, 1999
    Date of Patent: August 1, 2000
    Inventor: Chun Yuan Chang
  • Patent number: D434802
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: December 5, 2000
    Inventor: Chun Yuan Chang
  • Patent number: D434804
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: December 5, 2000
    Inventor: Chun Yuan Chang