Patents by Inventor Ta-Chang Liu

Ta-Chang 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).

  • Publication number: 20190063443
    Abstract: The present invention discloses a double-motor double-blade booster fan, including: a fan outer frame, a rotating mechanism installed in a center position of the fan outer frame, and a wire (circuit connection) electrically connected with the rotating mechanism and having a USB interface, wherein the rotating mechanism includes a motor bracket; a first motor and a second motor arranged on both ends of the motor bracket respectively; a shifting yoke installed on the motor bracket; a first blade installed on an output shaft of the first motor; and a second blade installed on an output shaft of the second motor, wherein the first blade includes a first axle center and first leaf blades uniformly dispersed on an outer circumference of the first axle center, and the second blade includes a second axle center and second leaf blades uniformly dispersed on an outer circumference of the second axle center.
    Type: Application
    Filed: August 23, 2017
    Publication date: February 28, 2019
    Inventor: TA-CHANG LIU
  • Publication number: 20180264565
    Abstract: A circular saw includes a machine housing disposed on a base to cooperatively define a working space therebetween, and a saw blade driven by a driving motor so as to rotate through a drive transmitting device accommodated in the machine housing. The device includes a first input shaft driven by the motor and having a first leading wheel mounted thereon, a middle shaft having a first trailing wheel and a second leading wheel mounted thereon to be rotated with the first input shaft through a first transmitting belt, a second input shaft having a second trailing wheel mounted thereon to be rotated with the middle shaft through a second transmitting belt, and a gear reduction device disposed to couple the second input shaft to the saw blade.
    Type: Application
    Filed: March 14, 2017
    Publication date: September 20, 2018
    Inventors: Chih-Yung Huang, Ta-Chang Liu, Yu-Tien Chen, Tien-Yun Chang
  • Patent number: 7207363
    Abstract: A cutting machine includes: a base; a worktable provided on the base and having a working surface and a lateral side; a cutter provided on the worktable; and an elongate fence having first and second long edges and pivoted to the lateral side of the worktable so as to be rotatable relative to the worktable about an axis. The axis is spaced apart from the first and second long edges of the fence by first and second distances, respectively, and is spaced apart from the working surface of the worktable by a third distance. The first distance is greater than the third distance, while the second distance is not greater than the third distance.
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: April 24, 2007
    Assignee: P & F Brother Industrial Corporation
    Inventors: Ta-Chang Liu, Ming-Hui Huang
  • Patent number: 7148057
    Abstract: A microarray biochip workstation allowing positioning of chips, immobilization of molecules, mixing of sample solution, molecular interactions and washing and processing qualitative and quantitative analyses consists of a positioning device for holding a biochip, a mixing device for acting on the sample solution applied on the biochip, a pumping device for removing the sample solution from the biochip surface that does not react, and a reading device for detecting reaction results of the biochip. The workstation thus constructed provides an integrated and effective work interface.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: December 12, 2006
    Assignee: Gongin Precision Industries, Co., Ltd
    Inventors: Yo-Hsin Su, Hsi-Lien Lu, Hsun-Min Lung, Chung-Ho Tung, Ta-Chang Liu, Chih-Kung Lee, Su-Ming Hsu, Shiming Lin, Long-Sun Huang, Chii-Wann Lin
  • Patent number: 6828807
    Abstract: A biological cell test method and apparatus employs a conventional perforated cell carrier which has a plurality of holes. Each hole has two metal electrodes. A cell is disposed in the hole to contact the two electrodes. The electrodes are connected to electric current or voltage. The electric current or field flows from one electrode through the cell to another electrode. Through the inherent impedance, inductance or capacitance of the cell, the presence or property reactions of the cell may be detected.
    Type: Grant
    Filed: January 2, 2003
    Date of Patent: December 7, 2004
    Assignee: Gongin Precision Industries Co., Ltd.
    Inventors: Yo-Hsin Su, Hsi-Lien Lu, Ta-Chang Liu, Hsun-Min Lung, Long-Sun Huang, Shiming Lin, Der-Xing Liou, Chien-Hsun Chen, Chih-Kung Lee
  • Patent number: 6820528
    Abstract: A cutting apparatus includes a base, a blade-holding arm pivoted to the base through a pivot and co-rotatable with the pivot, a light-emitting unit pivoted to the blade-holding arm, and a position-adjusting unit including a first linkage that is secured to the pivot, and a second linkage that has two opposite ends which are respectively pivoted to the first linkage and the light-emitting unit.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: November 23, 2004
    Assignee: P&F Brother Industrial Corporation
    Inventors: Ta-Chang Liu, Yueh-Hsun Chang
  • Publication number: 20040221702
    Abstract: A cutting apparatus includes a base, a blade-holding arm pivoted to the base through a pivot and co-rotatable with the pivot, a light-emitting unit pivoted to the blade-holding arm, and a position-adjusting unit including a first linkage that is secured to the pivot, and a second linkage that has two opposite ends which are respectively pivoted to the first linkage and the light-emitting unit.
    Type: Application
    Filed: July 28, 2003
    Publication date: November 11, 2004
    Applicant: P & F Brother Industrial Corporation
    Inventors: Ta-Chang Liu, Yueh-Hsun Chang
  • Publication number: 20040221704
    Abstract: A cutting apparatus includes a base, a blade-holding arm mounted rotatably on the base, a blade mounted rotatably on the blade-holding arm and rotatable about an axis, and a light-emitting unit mounted on the blade-holding arm and adapted to project an image line on the workpiece. The light-emitting unit is movable in a transverse direction relative to the blade between a first position, in which the image line is disposed at a first lateral side with respect to the blade, and a second position, in which the image line is disposed at a second lateral side with respect to the blade.
    Type: Application
    Filed: June 27, 2003
    Publication date: November 11, 2004
    Inventors: Ta-Chang Liu, Yueh-Hsun Chang
  • Publication number: 20040130339
    Abstract: A biological cell test method and apparatus employs a conventional perforated cell carrier which has a plurality of holes. Each hole has two metal electrodes. A cell is disposed in the hole to contact the two electrodes. The electrodes are connected to electric current or voltage. The electric current or field flows from one electrode through the cell to another electrode. Through the inherent impedance, inductance or capacitance of the cell, the presence or property reactions of the cell may be detected.
    Type: Application
    Filed: January 2, 2003
    Publication date: July 8, 2004
    Inventors: Yo-Hsin Su, Hsi-Lien Lu, Ta-Chang Liu, Hsun-Min Lung, Long-Sun Huang, Shiming Lin, Der-Xing Liou, Chien-Hsun Chen, Chih-Kung Lee
  • Publication number: 20040043385
    Abstract: A microarray biochip includes a transparent substrate and a plurality of indented reaction zones formed on the substrate. Each reaction zone has a plurality of adhesive units of a preset height formed thereon in an array fashion, and a top surface to form a first adhesive surface and lateral side surfaces to form second adhesive surfaces. The invention can effectively hold sample solution and retain end label products after calorimetric or fluorometric reaction, and increases reaction area and be adopted for use in optical or reflective detection devices.
    Type: Application
    Filed: September 3, 2002
    Publication date: March 4, 2004
    Inventors: Yo-Hsin Su, Hsi-Lien Lu, Hsun-Min Lung, Chung-Ho Tung, Ta-Chang Liu, Su-Ming Hsu, Chih-Kung Lee, Shiming Lin, Long-Sun Huang, Chii-Wann Lin, Shih-Yuan Lee
  • Publication number: 20040033590
    Abstract: A microarray biochip workstation allowing positioning of chips, immobilization of molecules, mixing of sample solution, molecular interactions and washing and processing qualitative and quantitative analyses consists of a positioning device for holding a biochip, a mixing device for acting on the sample solution applied on the biochip, a pumping device for removing the sample solution from the biochip surface that does not react, and a reading device for detecting reaction results of the biochip. The workstation thus constructed provides an integrated and effective work interface.
    Type: Application
    Filed: August 13, 2002
    Publication date: February 19, 2004
    Inventors: Yo-Hsin Su, Hsi-Lien Lu, Hsun-Min Lung, Chung-Ho Tung, Ta-Chang Liu, Chih-Kung Lee, Su-Ming Hsu, Shiming Lin, Long-Sun Huang, Chii-Wann Lin
  • Publication number: 20040033588
    Abstract: A mixing apparatus for biochips consists of a oscillation unit with controllable vibration frequency, a transmission section driven by the oscillation unit for transferring vibration of the oscillation unit, and a mixing unit connecting to and driven by the transmission section and locating at a selected distance above the biochip surface. The oscillation unit may generate vibration of a specific frequency and the vibration frequency, amplitude and duration may be controlled for effectively mixing and separating sample solution rapidly, simply and more economically.
    Type: Application
    Filed: August 15, 2002
    Publication date: February 19, 2004
    Inventors: Yo-Hsin Su, Hsi-Lien Lu, Hsun-Min Lung, Chung-Ho Tung, Ta-Chang Liu, Shiming Lin, Su-Ming Hsu, Chih-Kung Lee, Long-Sun Huang, Chii-Wann Lin, An-Bang Wang
  • Patent number: 6584698
    Abstract: An angle indicating apparatus includes a rod member, an indicia member, an indicator, a spring-loaded tumbler unit, and a locking unit. The indicia member is mounted pivotally on the rod member about a pivot axis, and includes a base plate formed with a generally semi-circular cutout. The indicator is disposed in the cutout and points to angle indicia that are provided on the base plate adjacent to the cutout. The base plate is further formed with a curved guide slot, and has a bottom side formed with a plurality of angularly spaced apart positioning grooves. The spring-loaded tumbler unit is mounted on the rod member and engages removably a selected one of the positioning grooves. The locking unit passes through the guide slot and is operable so as to engage the rod member and arrest undesired rotation of the indicia member relative to the rod member.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: July 1, 2003
    Assignee: P & F Brother Industrial Corporation
    Inventor: Ta-Chang Liu
  • Patent number: 6189429
    Abstract: A workpiece supporting assembly for a table saw includes a worktable and two horizontal rows of rollers disposed respectively and rotatably on two vertical side walls of the worktable. Two movable rails are disposed respectively on the side walls of the worktable. Each of the rails has an open-ended horizontal dovetail groove that extends long the length thereof and that confines the rollers of a corresponding one of the rows therein. A horizontal extension support plate rides on the rails. Accordingly, the rails and the extension support plate can move smoothly relative to the worktable.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: February 20, 2001
    Assignee: P&F Brother Industrial Corporation
    Inventor: Ta-Chang Liu