Patents by Inventor Shwu Ruu Chen

Shwu Ruu Chen 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: 6862956
    Abstract: A ratchet wrench includes a wrench body, an operation body, a limit plate, a pawl member, a cover plate, a snap ring, and a rotation member. The pawl member is rotated by the limit plate, so that the engaging teeth of the pawl member mesh with the ratchet teeth of the drive head, and the operation body is operated in one direction only by rotation of the drive head. Thus, the ratchet wrench that can be operated easily and conveniently, thereby facilitating the user operating the ratchet wrench.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: March 8, 2005
    Inventor: Shwu Ruu Chen
  • Patent number: 6688615
    Abstract: A tool box includes a base and a top board with two sidwalls and a back board connected between the top board and the base. A plurality of drawers are slidably supported on rails extending from two respective insides of the tow sidewalls. A pad is connected to a top of the top board so that the tool box is used as a bench. Two sets of wheels are connected to a bottom of the base and a cup holder is connected to the back board.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: February 10, 2004
    Inventor: Shwu Ruu Chen
  • Publication number: 20030155729
    Abstract: A tool box includes a base and a top board with two sidwalls and a back board connected between the top board and the base. A plurality of drawers are slidably supported on rails extending from two respective insides of the tow sidewalls. A pad is connected to a top of the top board so that the tool box is used as a bench. Two sets of wheels are connected to a bottom of the base and a cup holder is connected to the back board.
    Type: Application
    Filed: February 15, 2002
    Publication date: August 21, 2003
    Inventor: Shwu Ruu Chen
  • Patent number: 6386073
    Abstract: A wrench includes a handle with a first jaw and a protrusion respectively extending from an end thereof. A surface is connected between the protrusion and the first jaw. A pivotal member is pivotally connected to the protrusion and has a groove defined in a periphery thereof so as to receive the protrusion and the surface. A second jaw extends from the pivotal member and an end plate ends the groove. A spring biases between the end plate and the surface. The width between the first jaw and the second jaw can be adjusted by pivoting the pivotal member.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: May 14, 2002
    Inventor: Shwu Ruu Chen
  • Patent number: 6382052
    Abstract: A ratchet tool includes a ring-shaped head in which a toothed member is rotatably received and a pawl is received in a recess in the head and engaged with the toothed member. A chamber is defined beside the ring-shaped head and a control member is received in the chamber. The control member has a protrusion which is engaged with the notch of the pawl. A curved slot is defined through the control member and a shifting lever is connected to the control member. A torsion spring has a leg thereof fixedly connected to the control member and the other leg of the torsion spring is located in the curved slot.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: May 7, 2002
    Inventor: Shwu Ruu Chen
  • Patent number: 6068123
    Abstract: A drawer assembly includes a drawer retractably received in a receiving portion of a tool box and a driving device is located beside one of two opposite side walls of the drawer. A rack is attached to the inside of one of the two side walls and the driving device has a motor to rotate a gear which is engaged with the rack. A resilient link is disengagably engaged with the rack and connected to a button. When the button is pushed to disengage the resilient link from the rack, the motor rotates the gear to let the drawer slide out from the receiving portion. When the drawer is pushed into the receiving portion, the resilient link is engaged with the rack to position the drawer.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: May 30, 2000
    Inventor: Shwu Ruu Chen
  • Patent number: 5788072
    Abstract: A tool box includes a body and a cover pivotally connected to the body which has a bottom with a peripheral wall extending therefrom which has two openings defined in two opposite sides thereof. The peripheral wall has two shoulder portions respectively formed in a front inner side and a rear inner side thereof, a separating ridge connecting between the two shoulder portions. The bottom has two slots defined therein and separated by the separating ridge. Two drawers are respectively and retractably received in the body via the two openings, each of the two drawers having a protrusion extending from an underside thereof so as to be movably received in the slot corresponding thereto. A plate member is disposed onto the two shoulder portions and has a plurality of cavities defined therein.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: August 4, 1998
    Inventor: Shwu Ruu Chen