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).
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Publication number: 20060151065Abstract: A rotary cutter of a wood planing machine includes: a rotary shaft that has alternately disposed fan-shaped vanes and fan-shaped grooves; and blades secured respectively to the fan-shaped vanes. Each of the fan-shaped vanes has a leading face and a trailing face. Each of the blades is attached securedly to the trailing face of the respective fan-shaped vane. The leading face of each of the fan-shaped vanes and the trailing face of an adjacent one of the fan-shaped vanes converge toward a center portion of the rotary shaft so as to define a respective one of the fan-shaped grooves, and cooperatively define an angle therebetween. The angle is greater than 60 degrees and less than 120 degrees.Type: ApplicationFiled: March 9, 2006Publication date: July 13, 2006Inventor: Chin-Yuan Liu
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Patent number: 7051776Abstract: A rotary cutter includes: an elongated polygonal shaft that defines a rotation axis, that has blade-mounting surfaces parallel to and surrounding the rotation axis, and that is formed with blade-aligning studs for aligning a blade, the blade-mounting surfaces being equidistant from the rotation axis, two adjacent ones of the blade-mounting surfaces defining an angle therebetween, the angles defined by the blade-mounting surfaces being equal; blade-fastening plates, each of which is attached to and cooperates with a respective one of the blade-mounting surfaces of the shaft to define a blade-receiving gap therebetween for receiving the blade; and fastening screws for fastening the blade to the respective one of the blade-mounting surfaces of the shaft.Type: GrantFiled: February 8, 2005Date of Patent: May 30, 2006Assignee: Shinmax Industry Co., Ltd.Inventor: Chin Yuan Liu
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Patent number: 7028728Abstract: 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: GrantFiled: September 27, 2004Date of Patent: April 18, 2006Assignee: Shinmax Industry Co., Ltd.Inventor: Chin Yuan Liu
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Patent number: 7013938Abstract: 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: GrantFiled: January 6, 2004Date of Patent: March 21, 2006Assignee: Shinmax Industry Co., Ltd.Inventor: Chin Yuan Liu
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Publication number: 20060027287Abstract: 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: ApplicationFiled: November 12, 2004Publication date: February 9, 2006Inventor: Chin Yuan Liu
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Publication number: 20040250888Abstract: 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: ApplicationFiled: January 6, 2004Publication date: December 16, 2004Inventor: Chin Yuan Liu
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Patent number: 6626280Abstract: 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: GrantFiled: May 31, 2001Date of Patent: September 30, 2003Assignee: Industrial Technology Research InstituteInventors: Weng-Jung Lu, Chin-Yuan Liu, Shyan-Haur Jane, Chun-Kuei Lai, Chao-Hsien Huang, Chih-Min Lin
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Patent number: 6592325Abstract: 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: GrantFiled: June 25, 2001Date of Patent: July 15, 2003Assignee: Industrial Technology Research InstituteInventors: Weng-Jung Lu, Chin-Yuan Liu, Shyan-Haur Jane, Chun-Kuei Lai, Chao-Hsien Huang, Chih-Min Lin
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Patent number: 6558110Abstract: 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: GrantFiled: May 31, 2001Date of Patent: May 6, 2003Assignee: Industrial Technology Research InstituteInventors: Weng-Jung Lu, Chin-Yuan Liu, Chun-Kuei Lai, Pang-Min Chiang, Chih-Min Lin
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Publication number: 20030015459Abstract: 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: ApplicationFiled: June 25, 2001Publication date: January 23, 2003Applicant: Industrial Technology Research InstituteInventors: Weng-Jung Lu, Chin-Yuan Liu, Shyan-Haur Jane, Chun-Kuei Lai, Chao-Hsien Huang, Chih-Min Lin
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Patent number: 6505528Abstract: 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: GrantFiled: June 15, 2001Date of Patent: January 14, 2003Assignee: 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
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Publication number: 20020189380Abstract: 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: ApplicationFiled: June 15, 2001Publication date: December 19, 2002Applicant: Industrial Technology Research InstituteInventors: Weng-Jung Lu, Chin-Yuan Liu, Yuan-Tsu Wan, Chun-Kuei Lai, Chao-Hsien Huang, Chih-Min Lin, Chun-Hsien Liu
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Publication number: 20020182051Abstract: 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: ApplicationFiled: May 31, 2001Publication date: December 5, 2002Applicant: Industrial Technology Research InstituteInventors: Weng-Jung Lu, Chin-Yuan Liu, Chun-Kuei Lai, Pang-Min Chiang, Chih-Min Lin
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Publication number: 20020179408Abstract: 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: ApplicationFiled: May 31, 2001Publication date: December 5, 2002Applicant: Industrial Technology Research InstituteInventors: Weng-Jung Lu, Chin-Yuan Liu, Shyan-Haur Jane, Chun-Kuei Lai, Chao-Hsien Huang, Chih-Min Lin