Patents by Inventor Meng Tsung Chan

Meng Tsung 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: 8245602
    Abstract: A ratchet wrench includes a wrench head having a pawl compartment formed between a notch and a chamber of the wrench head, a drive member mounted in the chamber of the wrench head and having a ratchet gear, a pawl slidably received in the pawl compartment of the wrench head for engaging with the ratchet gear and for controlling the driving direction of the drive member by the wrench head, a handle having a pivotal coupling member mounted in the notch of the wrench head, and an actuating member attached to the pivotal coupling member and engaged with the pawl for moving the pawl to either side of the pawl compartment of the wrench head in order to determine the driving direction of the drive member by the wrench head.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: August 21, 2012
    Inventor: Meng Tsung Chan
  • Publication number: 20110162488
    Abstract: A ratchet wrench includes a wrench head having a pawl compartment formed between a notch and a chamber of the wrench head, a drive member mounted in the chamber of the wrench head and having a ratchet gear, a pawl slidably received in the pawl compartment of the wrench head for engaging with the ratchet gear and for controlling the driving direction of the drive member by the wrench head, a handle having a pivotal coupling member mounted in the notch of the wrench head, and an actuating member attached to the pivotal coupling member and engaged with the pawl for moving the pawl to either side of the pawl compartment of the wrench head in order to determine the driving direction of the drive member by the wrench head.
    Type: Application
    Filed: January 7, 2010
    Publication date: July 7, 2011
    Inventor: Meng Tsung Chan