Patents by Inventor Yun-Chun He

Yun-Chun He 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: 7549856
    Abstract: A side core-pulling mechanism of mold includes a slide block, an impacted block and a wobbly block. The bottom of the slide block projects outwards to form a columnar pin. The front surface of the impacted block defines a receiving cavity, a first slot and a second slot. The first slot upright extends downwards to pass through the bottom of the impacted block from the over place of the right end of the receiving cavity and communicates with the right end of the receiving cavity. The second slot extends rightwards and downwards to pass through the bottom of the impacted block from a start end of the first slot. The first and second slots communicate with each other. The columnar pin is movable in the first and second slots. The wobbly block is received in the receiving cavity of the impacted block. The wobbly block is against the bottom wall of the receiving cavity to cut off the first slot at a nature status and rotates upwards in the receiving cavity for making the first slot be in a through status.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: June 23, 2009
    Assignee: Cheng Uei Precision Industry Co., Ltd.
    Inventors: Chih-Yu Chen, Jian-Ren Wang, Yun-Chun He
  • Publication number: 20080276744
    Abstract: A side core-pulling mechanism of mold includes a slide block, an impacted block and a wobbly block. The bottom of the slide block projects outwards to form a columnar pin. The front surface of the impacted block defines a receiving cavity, a first slot and a second slot. The first slot upright extends downwards to pass through the bottom of the impacted block from the over place of the right end of the receiving cavity and communicates with the right end of the receiving cavity. The second slot extends rightwards and downwards to pass through the bottom of the impacted block from a start end of the first slot. The first and second slots communicate with each other. The columnar pin is movable in the first and second slots. The wobbly block is received in the receiving cavity of the impacted block. The wobbly block is against the bottom wall of the receiving cavity to cut off the first slot at a nature status and rotates upwards in the receiving cavity for making the first slot be in a through status.
    Type: Application
    Filed: May 10, 2007
    Publication date: November 13, 2008
    Inventors: Chih-Yu Chen, Jian-Ren Wang, Yun-Chun He
  • Patent number: 7435079
    Abstract: An angular ejector mechanism for ejecting a plastic article with a recess in an inner side includes an angular ejector pin, a sliding pin, an elastic elements and a stopping block. The angular ejector pin includes a molding plate and a supporting plate. A moving hole and a sliding groove are respectively defined in a front face and an opposite rear face of the molding plate to communicate with each other. The sliding pin has a stopping protrusion dividing the sliding pin into a moving portion and a sliding portion. A sliding channel is defined on a front face of the stopping block. The sliding includes a vertical channel and a inclined channel. The moving portion is received in the moving hole of the molding plate, and the sliding portion slides from the sliding channel into the inclined channel until the angular ejector pin separates from the plastic article.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: October 14, 2008
    Assignee: Cheng Uei Precision Industry Co., Ltd.
    Inventors: Ching-Chang Wang, Chih-Yu Chen, Jian-Guang Huang, Yun-Chun He
  • Publication number: 20070243286
    Abstract: An angular ejector mechanism for ejecting a plastic article with a recess in an inner side includes an angular ejector pin, a sliding pin, an elastic elements and a stopping block. The angular ejector pin includes a molding plate and a supporting plate. A moving hole and a sliding groove are respectively defined in a front face and an opposite rear face of the molding plate to communicate with each other. The sliding pin has a stopping protrusion dividing the sliding pin into a moving portion and a sliding portion. A sliding channel is defined on a front face of the stopping block. The sliding includes a vertical channel and a inclined channel. The moving portion is received in the moving hole of the molding plate, and the sliding portion slides from the sliding channel into the inclined channel until the angular ejector pin separates from the plastic article.
    Type: Application
    Filed: April 18, 2006
    Publication date: October 18, 2007
    Inventors: Ching-Chang Wang, Chih-Yu Chen, Jian-Guang Huang, Yun-Chun He