Patents by Inventor Chin Yuan Liu

Chin Yuan Liu 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: 7028728
    Abstract: A wood planing machine includes a cutter carriage mounted movably on screw rods, upper and lower couplers mounted adjustably on the cutter carriage and threadedly engaging the screw rods, and upper and lower screws for securing the upper and lower couplers to the cutter carriage. The upper and lower screws are operable to permit position adjustment of the upper and lower couplers relative to the cutter carriage to a tightening position.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: April 18, 2006
    Assignee: Shinmax Industry Co., Ltd.
    Inventor: Chin Yuan Liu
  • Patent number: 7013938
    Abstract: A drive shiftable rolling feed device includes front and rear feed rollers mounted on a support carriage of a wood planing machine for feeding a workpiece, a reduction gear train disposed to convert a primary drive of a cutter shaft into two reduction drives and coupled to two spaced-apart driven gears to deliver the two reduction drives, a clutch actuating shaft surrounded by the driven gears and having a coupling segment which is movable between first and second positions, and a clutch member disposed to couple the coupling segment to one of the driven gears when the coupling segment is in a corresponding one of the first and second positions such that the coupled driven gear can be rotated with a rotational drive that is transmitted to the feed rollers.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: March 21, 2006
    Assignee: Shinmax Industry Co., Ltd.
    Inventor: Chin Yuan Liu
  • Publication number: 20060027287
    Abstract: A rotary cutter of a wood planing machine includes an elongated rotary shaft that has a fan-shaped cross-section, a center portion, and a plurality of fan-shaped vanes angularly displaced around the center portion and extending transversely and outwardly from the center portion, and that is formed with a plurality of fan-shaped grooves, each of which is defined by two adjacent ones of the fan-shaped vanes. A plurality of elongated blades are respectively secured to the fan-shaped vanes in the fan-shaped grooves, respectively.
    Type: Application
    Filed: November 12, 2004
    Publication date: February 9, 2006
    Inventor: Chin Yuan Liu
  • Publication number: 20040250888
    Abstract: A drive shiftable rolling feed device includes front and rear feed rollers mounted on a support carriage of a wood planing machine for feeding a workpiece, a reduction gear train disposed to convert a primary drive of a cutter shaft into two reduction drives and coupled to two spaced-apart driven gears to deliver the two reduction drives, a clutch actuating shaft surrounded by the driven gears and having a coupling segment which is movable between first and second positions, and a clutch member disposed to couple the coupling segment to one of the driven gears when the coupling segment is in a corresponding one of the first and second positions such that the coupled driven gear can be rotated with a rotational drive that is transmitted to the feed rollers.
    Type: Application
    Filed: January 6, 2004
    Publication date: December 16, 2004
    Inventor: Chin Yuan Liu
  • Patent number: 6626280
    Abstract: A tray-positioning device comprises a driving unit and a positioning unit, wherein the positioning unit provides a plurality of sidewalls that correspond to a plurality of upper sidewalls of a tray. By allowing the driving unit to move the positioning unit toward the tray or vice versa that said individual upper sidewalls are in close contact with the corresponding sidewalls, the tray-positioning device is capable of providing precise positioning for the tray.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: September 30, 2003
    Assignee: Industrial Technology Research Institute
    Inventors: Weng-Jung Lu, Chin-Yuan Liu, Shyan-Haur Jane, Chun-Kuei Lai, Chao-Hsien Huang, Chih-Min Lin
  • Patent number: 6592325
    Abstract: An air-suspended die sorter is disclosed, in particular an air-suspended die sorter capable of performing die sorting, die attaching and die pick-up in the semiconductor industry. The present invention provides an air-suspended die sorter capable of eliminating spring preload, and lowering mechanical friction so as to lift die sorting precision and elevate the success rate, and has a cylinder unit, a piston unit and a pressure unit. The piston type design and a precise control of pressure on top and on bottom of the piston, respectively, enables the present invention to offer an air-suspended state that has done away with stress problems associated with the use of springs. The present invention further provides a novel buffer design for reducing friction and die impact often encountered in prior art applications.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: July 15, 2003
    Assignee: Industrial Technology Research Institute
    Inventors: Weng-Jung Lu, Chin-Yuan Liu, Shyan-Haur Jane, Chun-Kuei Lai, Chao-Hsien Huang, Chih-Min Lin
  • Patent number: 6558110
    Abstract: A Tray input-output module, comprising a power unit, a clamp unit and a support unit, is capable of automatically retrieving a tray from a transport device and automatically delivering a tray to a transport device for facilitating automation in chip sorter operation, reducing manual work and raising productivity.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: May 6, 2003
    Assignee: Industrial Technology Research Institute
    Inventors: Weng-Jung Lu, Chin-Yuan Liu, Chun-Kuei Lai, Pang-Min Chiang, Chih-Min Lin
  • Publication number: 20030015459
    Abstract: An air-suspended die sorter is disclosed, in particular an air-suspended die sorter capable of performing die sorting, die attaching and die pick-up in the semiconductor industry. The present invention provides an air-suspended die sorter capable of eliminating spring preload, and lowering mechanical friction so as to lift die sorting precision and elevate the success rate, and has a cylinder unit, a piston unit and a pressure unit. The piston type design and a precise control of pressure on top and on bottom of the piston, respectively, enables the present invention to offer an air-suspended state that has done away with stress problems associated with the use of springs. The present invention further provides a novel buffer design for reducing friction and die impact often encountered in prior art applications.
    Type: Application
    Filed: June 25, 2001
    Publication date: January 23, 2003
    Applicant: Industrial Technology Research Institute
    Inventors: Weng-Jung Lu, Chin-Yuan Liu, Shyan-Haur Jane, Chun-Kuei Lai, Chao-Hsien Huang, Chih-Min Lin
  • Patent number: 6505528
    Abstract: The invention is a device for fast taking out and putting in, especially the device can fast take out a chip from a wafer to put in another chip receptacle, wherein, the invention includes a gear set, which consists of a first big gear, a second big gear and a small gear; at least two driving device, which consists a first driving device and a second driving device; a link mechanism, which cooperates with the gear set to proceed that the link mechanism moves forth toward a non-horizontal direction and back toward the reverse direction, and moves down toward a non-vertical direction and up toward the reverse direction as well; a lift mechanism, which is driven by the first driving device, and a mold plate with gear set and link mechanism is then driven either to complete the actions of moving down toward a non-vertical direction and up toward the reverse direction as mentioned above.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: January 14, 2003
    Assignee: Industrial Technology Research Corp.
    Inventors: Weng-Jung Lu, Chin-Yuan Liu, Yuan-Tsu Wan, Chun-Kuei Lai, Chao-Hsien Huang, Chih-Min Lin, Chun-Hsien Liu
  • Publication number: 20020189380
    Abstract: The invention is a device for fast taking out and putting in, especially the device can fast take out a chip from a wafer to put in another chip receptacle, wherein, the invention includes a gear set, which consists of a first big gear, a second big gear and a small gear; at least two driving device, which consists a first driving device and a second driving device; a link mechanism, which cooperates with the gear set to proceed that the link mechanism moves forth toward a non-horizontal direction and back toward the reverse direction, and moves down toward a non-vertical direction and up toward the reverse direction as well; a lift mechanism, which is driven by the first driving device, and a mold plate with gear set and link mechanism is then driven either to complete the actions of moving down toward a non-vertical direction and up toward the reverse direction as mentioned above.
    Type: Application
    Filed: June 15, 2001
    Publication date: December 19, 2002
    Applicant: Industrial Technology Research Institute
    Inventors: Weng-Jung Lu, Chin-Yuan Liu, Yuan-Tsu Wan, Chun-Kuei Lai, Chao-Hsien Huang, Chih-Min Lin, Chun-Hsien Liu
  • Publication number: 20020182051
    Abstract: A Tray input-output module, comprising a power unit, a clamp unit and a support unit, is capable of automatically retrieving a tray from a transport device and automatically delivering a tray to a transport device for facilitating automation in chip sorter operation, reducing manual work and raising productivity.
    Type: Application
    Filed: May 31, 2001
    Publication date: December 5, 2002
    Applicant: Industrial Technology Research Institute
    Inventors: Weng-Jung Lu, Chin-Yuan Liu, Chun-Kuei Lai, Pang-Min Chiang, Chih-Min Lin
  • Publication number: 20020179408
    Abstract: A tray-positioning device comprises a driving unit and a positioning unit, wherein the positioning unit provides a plurality of sidewalls that correspond to a plurality of upper sidewalls of a tray. By allowing the driving unit to move the positioning unit toward the tray or vice versa that said individual upper sidewalls are in close contact with the corresponding sidewalls, the tray-positioning device is capable of providing precise positioning for the tray.
    Type: Application
    Filed: May 31, 2001
    Publication date: December 5, 2002
    Applicant: Industrial Technology Research Institute
    Inventors: Weng-Jung Lu, Chin-Yuan Liu, Shyan-Haur Jane, Chun-Kuei Lai, Chao-Hsien Huang, Chih-Min Lin