Patents by Inventor Chiung-Chang Tsai

Chiung-Chang Tsai 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: 10766125
    Abstract: A ratchet screwdriver includes a mounting seat, a fixing ring, a control member, a driving shaft, two pawls, two springs, a fixing ring, a control member, a bead, a positioning spring and a bolt. The mounting seat has a front with a first slot, a second slot, a first extension slot, a second extension slot, a passage, a first hole and a second hole. The driving shaft has a ratchet portion. Each pawl is biased by one spring so as to be engaged with the ratchet portion. The control member is rotatably mounted to the mounting seat and the driving shaft to pivot the pawls to engage or disengage with the ratchet portion.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: September 8, 2020
    Inventors: Chiung-Chang Tsai, Chung-Yu Tsai
  • Patent number: 10545013
    Abstract: A measuring tape assembly includes a tape retractably received in a case. The tape has an end hook connected to the first end thereof, and the end hook is located outside of the case. The end hook includes a first face and a second face which is located opposite to the first face. The first face includes multiple grooves which are straight grooves. The first face has first sand portion attached thereon so as to form a first friction face on the first face. The first face faces the case so as to contact an object. The second face has second sand portion attached thereon so as to form a second friction face on the second face. The first and second sand portions provide proper friction so that the end hook does not slip away from the object to be in contact with.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: January 28, 2020
    Inventors: Chiung-Chang Tsai, Chung-Yu Tsai
  • Patent number: 10384334
    Abstract: A ratchet screwdriver includes a mounting seat, a control member, a driving shaft, two pawls and two springs. The mounting seat has a receiving space, a first slot and a second slot. A passage is defined through the mounting seat. The first and second slots have a hole respectively. The driving shaft has a ratchet portion located in the receiving space. Each pawl is biased by one spring so as to be engaged with the ratchet portion. The control member is rotatably mounted to the mounting seat and the driving shaft. The control member has two control plates to pivot the pawls to disengage from the ratchet portion of the driving shaft.
    Type: Grant
    Filed: September 30, 2017
    Date of Patent: August 20, 2019
    Inventors: Chiung-Chang Tsai, Chung-Yu Tsai
  • Publication number: 20190212120
    Abstract: A measuring tape assembly includes a tape retractably received in a case. The tape has an end hook connected to the first end thereof, and the end hook is located outside of the case. The end hook includes a first face and a second face which is located opposite to the first face. The first face includes multiple grooves which are straight grooves. The first face has first sand portion attached thereon so as to form a first friction face on the first face. The first face faces the case so as to contact an object. The second face has second sand portion attached thereon so as to form a second friction face on the second face. The first and second sand portions provide proper friction so that the end hook does not slip away from the object to be in contact with.
    Type: Application
    Filed: January 10, 2018
    Publication date: July 11, 2019
    Inventors: Chiung-Chang Tsai, Chung-Yu Tsai
  • Publication number: 20190134790
    Abstract: A ratchet screwdriver includes a mounting seat, a fixing ring, a control member, a driving shaft, two pawls, two springs, a fixing ring, a control member, a bead, a positioning spring and a bolt. The mounting seat has a front with a first slot, a second slot, a first extension slot, a second extension slot, a passage, a first hole and a second hole. The driving shaft has a ratchet portion. Each pawl is biased by one spring so as to be engaged with the ratchet portion. The control member is rotatably mounted to the mounting seat and the driving shaft to pivot the pawls to engage or disengage with the ratchet portion.
    Type: Application
    Filed: November 6, 2017
    Publication date: May 9, 2019
    Inventors: Chiung-Chang Tsai, Chung-Yu Tsai
  • Publication number: 20190099864
    Abstract: A ratchet screwdriver includes a mounting seat, a control member, a driving shaft, two pawls and two springs. The mounting seat has a receiving space, a first slot and a second slot. A passage is defined through the mounting seat. The first and second slots have a hole respectively. The driving shaft has a ratchet portion located in the receiving space. Each pawl is biased by one spring so as to be engaged with the ratchet portion. The control member is rotatably mounted to the mounting seat and the driving shaft. The control member has two control plates to pivot the pawls to disengage from the ratchet portion of the driving shaft.
    Type: Application
    Filed: September 30, 2017
    Publication date: April 4, 2019
    Inventors: Chiung-Chang Tsai, Chung-Yu Tsai
  • Publication number: 20170180850
    Abstract: A waterproof electronic device that is waterproof and has pressure-equilibrium functions is provided. The waterproof electronic device includes a housing, a microphone, an elastic element, and a waterproof element. The housing has a chamber and an acoustic hole communicating with the chamber. The microphone is disposed in the chamber. The elastic element is disposed on the microphone. The elastic element includes a through hole facing the microphone, and a ventilation groove communicating with the through hole. The waterproof element is connected to the elastic element and the housing, and is configured to block liquid. The waterproof element includes pores communicating with the acoustic hole and the through hole.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 22, 2017
    Inventors: Chia-Ju HSU, Yu-Liang CHEN, Ko-Chun WANG, Chun-Nan HUANG, Zih-Yun WANG, Chun-Wen WANG, Chiung-Chang TSAI, Ji-Dein WU, Chun-Lung CHEN, Chen-Hsiang LIN
  • Patent number: 9577324
    Abstract: A wearable electronic device includes a main body, a watchband spring pin engaged with one side of the main body, and a wrist-worn watchband connected to the watchband spring pin. The main body includes a wireless communication module and a conductive member electrically connected to the wireless communication module. The watchband spring pin is physically connected to the conductive member on the main body to be an antenna unit of the wireless communication module.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: February 21, 2017
    Assignee: Quanta Computer Inc.
    Inventors: Chun-Lung Chen, Ji-Dein Wu, Shih-Ling Huang, Yu-Feng Lin, Yen-Liang Liu, Ko-Chun Wang, Yu-Liang Chen, Chiung-Chang Tsai
  • Patent number: 9478901
    Abstract: An electronic product and its cable set are provided in which the cable set includes a cable assembly and a connector. The connector includes a single magnet block, a metal unit and two conductive ends. The metal unit is fixed and contacted with outer surfaces of the single magnet block, and is electrically connected to the cable assembly for attracting and electrically connecting to a portable electronic device. The conductive ends respectively penetrate through the single magnet block and electrically connect to the cable assembly for electrically connecting to the portable electronic device.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: October 25, 2016
    Assignee: QUANTA COMPUTER INC.
    Inventors: Chun-Lung Chen, Ji-Dein Wu, Shih-Ling Huang, Yu-Feng Lin, Yen-Liang Liu, Ko-Chun Wang, Yu-Liang Chen, Chiung-Chang Tsai
  • Publication number: 20160261037
    Abstract: A wearable electronic device includes a main body, a watchband spring pin engaged with one side of the main body, and a wrist-worn watchband connected to the watchband spring pin. The main body includes a wireless communication module and a conductive member electrically connected to the wireless communication module. The watchband spring pin is physically connected to the conductive member on the main body to be an antenna unit of the wireless communication module.
    Type: Application
    Filed: June 4, 2015
    Publication date: September 8, 2016
    Applicant: QUANTA COMPUTER INC.
    Inventors: Chun-Lung CHEN, Ji-Dein WU, Shih-Ling HUANG, Yu-Feng LIN, Yen-Liang LIU, Ko-Chun WANG, Yu-Liang CHEN, Chiung-Chang TSAI
  • Publication number: 20160261065
    Abstract: An electronic product and its cable set are provided in which the cable set includes a cable assembly and a connector. The connector includes a single magnet block, a metal unit and two conductive ends. The metal unit is fixed and contacted with outer surfaces of the single magnet block, and is electrically connected to the cable assembly for attracting and electrically connecting to a portable electronic device. The conductive ends respectively penetrate through the single magnet block and electrically connect to the cable assembly for electrically connecting to the portable electronic device.
    Type: Application
    Filed: June 3, 2015
    Publication date: September 8, 2016
    Applicant: QUANTA COMPUTER INC.
    Inventors: Chun-Lung CHEN, Ji-Dein WU, Shih-Ling HUANG, Yu-Feng LIN, Yen-Liang LIU, Ko-Chun WANG, Yu-Liang CHEN, Chiung-Chang TSAI
  • Patent number: 9278435
    Abstract: A ratchet screwdriver includes a mounting seat, a fixing ring, a control member, a driving shaft, four pawls and four springs. The mounting seat has a space, two first slots and two second slots. A passage is defined through the mounting seat. The first slots each have a first hole and the second slots each have a second hole. The driving shaft has a ratchet portion located in the space. The four pawls are biased by the four springs so as to be engaged with the ratchet portion. The fixing ring is connected to the mounting seat and the four pawls are pivotably connected to the fixing ring. The control member is rotatably mounted to the mounting seat and the driving shaft. The control member has two control plates to pivot the pawls to disengage from the ratchet portion of the driving shaft.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: March 8, 2016
    Inventor: Chiung-Chang Tsai
  • Publication number: 20150290777
    Abstract: A work tool includes a tool body having a function part connected to one end of the tool body. The function part has at least one contact face which has at least one area that has multiple abrasive particles. The abrasive particles are the same as those used for a grinding wheel so as to form a friction surface in the at least one area. By friction surface in the at least one area, the work tool can firmly hold an object.
    Type: Application
    Filed: April 15, 2014
    Publication date: October 15, 2015
    Inventor: Chiung-Chang Tsai
  • Publication number: 20150122088
    Abstract: A ratchet screwdriver includes a mounting seat, a fixing ring, a control member, a driving shaft, four pawls and four springs. The mounting seat has a space, two first slots and two second slots. A passage is defined through the mounting seat. The first slots each have a first hole and the second slots each have a second hole. The driving shaft has a ratchet portion located in the space. The four pawls are biased by the four springs so as to be engaged with the ratchet portion. The fixing ring is connected to the mounting seat and the four pawls are pivotably connected to the fixing ring. The control member is rotatably mounted to the mounting seat and the driving shaft. The control member has two control plates to pivot the pawls to disengage from the ratchet portion of the driving shaft.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 7, 2015
    Inventor: Chiung-Chang Tsai
  • Patent number: 8051747
    Abstract: A one-way ratchet wrench according to the present invention includes a wrench body, a ratchet wheel, a pawl, an anchor, an elastic element and the following elements. A cover is hollow and annular and is annularly provided with a groove. The cover is mounted on the first receiving recess of the wrench body and presses against engaging teeth. A clip ring is mounted between the clip groove of the wrench body and the groove of the cover. The cover and the ratchet wheel are thereby mounted in the first receiving recess of the wrench body such that the cover and the ratchet wheel would not disengage from the first receiving recess of the wrench body during rotation.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: November 8, 2011
    Inventor: Chiung-Chang Tsai
  • Patent number: 8020473
    Abstract: The present invention discloses a handle of a hand tool, which comprises a handle body and grinding members. The grinding member is mounted on the handle body, and the grinding member contains abrasive particles and has at least a grinding face, so that the user can grind the sharp edge of articles straightly by grinding member possessed by the handle. Also the user can easily replace a new grinding member when the old one is out of use. Furthermore, the abrasive particles of grinding members have average diameter being different from each other so as to grind the article to have different fine degrees.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: September 20, 2011
    Inventor: Chiung-Chang Tsai
  • Publication number: 20090255380
    Abstract: The present invention discloses a handle of a hand tool, which comprises a handle body and grinding members. The grinding member is mounted on the handle body, and the grinding member contains abrasive particles and has at least a grinding face, so that the user can grind the sharp edge of articles straightly by grinding member possessed by the handle. Also the user can easily replace a new grinding member when the old one is out of use. Furthermore, the abrasive particles of grinding members have average diameter being different from each other so as to grind the article to have different fine degrees.
    Type: Application
    Filed: March 12, 2009
    Publication date: October 15, 2009
    Inventor: Chiung-Chang Tsai
  • Patent number: D531480
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: November 7, 2006
    Inventor: Chiung-Chang Tsai
  • Patent number: D531878
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: November 14, 2006
    Inventor: Chiung-Chang Tsai
  • Patent number: D533428
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: December 12, 2006
    Inventor: Chiung-Chang Tsai