Patents by Inventor Rong-Suei Chan

Rong-Suei Chan 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: 11167400
    Abstract: A ratchet wrench having multiple driving modes with torque sensing function includes an annular head, a driving unit, a control unit, a rotary member, a forcing unit and at least one torque sensor. The annular head receives the driving unit therein and a shaft extends from the annular head. The driving unit has a first toothed ring engaged with a first pawl, and a second pawl engaged with inner teeth of the annular head. The rotary member is rotatably inserted in the shaft, and has two ends to the driving unit and the forcing unit respectively. The forcing unit includes a tubular handle and a display unit. The torque sensor is mounted on the shaft. The shaft inserts into an axial chamber of the handle. The torque sensor is positioned between the axial chamber and the shaft. When the shaft is bended by the handle to produce a deformation.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: November 9, 2021
    Inventor: Rong-Suei Chan
  • Publication number: 20200198105
    Abstract: A ratchet wrench having multiple driving modes with torque sensing function includes an annular head, a driving unit, a control unit, a rotary member, a forcing unit and at least one torque sensor. The annular head receives the driving unit therein and a shaft extends from the annular head. The driving unit has a first toothed ring engaged with a first pawl, and a second pawl engaged with inner teeth of the annular head. The rotary member is rotatably inserted in the shaft, and has two ends to the driving unit and the forcing unit respectively. The forcing unit includes a tubular handle and a display unit. The torque sensor is mounted on the shaft. The shaft inserts into an axial chamber of the handle. The torque sensor is positioned between the axial chamber and the shaft. When the shaft is bended by the handle to produce a deformation.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 25, 2020
    Inventor: Rong-Suei Chan
  • Patent number: 9868191
    Abstract: A ratchet wrench includes an annular head, a driving unit, a control unit, a rotary member, a second body, a bead and an end piece. The annular head receives the driving unit therein and a shaft extends from the annular head. The driving unit has a top part and a bottom part, between which a first toothed ring, a first pawl, two second pawls, a third pawl and a second toothed ring are pivotably located. The rotary member is rotatably inserted into an axial hole of the shaft and has third teeth, a recess and an engaging groove. The third teeth are engaged with the first and second toothed rings. A bead biased by a spring located in the shaft and is engaged with the engaging groove. The recess of the rotary member is connected with the second body.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: January 16, 2018
    Inventors: Ya-Lan He, Rong-Suei Chan
  • Publication number: 20170136608
    Abstract: A ratchet wrench includes an annular head, a driving unit, a control unit, a rotary member, a second body, a bead and an end piece. The annular head receives the driving unit therein and a shaft extends from the annular head. The driving unit has a top part and a bottom part, between which a first toothed ring, a first pawl, two second pawls, a third pawl and a second toothed ring are pivotably located. The rotary member is rotatably inserted into an axial hole of the shaft and has third teeth, a recess and an engaging groove. The third teeth are engaged with the first and second toothed rings. A bead biased by a spring located in the shaft and is engaged with the engaging groove. The recess of the rotary member is connected with the second body.
    Type: Application
    Filed: November 17, 2015
    Publication date: May 18, 2017
    Inventors: Ya-Lan He, Rong-Suei Chan