Patents by Inventor Yi Chuan Tseng

Yi Chuan Tseng 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: 7185435
    Abstract: A utility knife that includes a pair of blades mounted on a blade holder. One blade is to be extendable from the housing of the utility knife adjacent the fore end of the utility knife with the other blade to be extendable from the housing to be usable for adjacent the aft end of the housing. The blade at the fore end of the housing is to be usable by the user exerting a pulling action toward the user with the blade at the aft end of the housing to be usable by the user exerting a pushing action against the housing.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: March 6, 2007
    Assignee: AWI Acquisition Company
    Inventor: Yi Chuan Tseng
  • Patent number: 6789452
    Abstract: An increased torque applying pliers which utilizes two separate sets of jaws with each set of jaws having their own pivot axis. Each set of jaws are reversely oriented relative to each other. The sets of jaws are pivotally connected together with this pivot connection also being connected to a handle assembly. The handle assembly comprises two handles which are also pivotally connected together with the pivot axis for the handle being confined within a central cavity that is formed by the jaw members. The utilizing of a separate pivot axis for the handle members which is spaced from the connecting axes that interconnect the jaw members and the handles provides for the application of an increased amount of torque when clamping of the pliers onto an exterior structure.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: September 14, 2004
    Assignee: AWI Acquisition Company
    Inventor: Yi Chuan Tseng
  • Patent number: 6786117
    Abstract: A versatile use pliers which has a first pair of jaws reversely positioned relative to a second pair of jaws. Both pairs of jaws are to be simultaneously movable between an open and a closed position. Movement of the jaws between the open and closed position is accomplished by a handle assembly upon which both sets of jaws are mounted. The handles are pivotable about one-hundred and forty degrees which will remove one set of jaws from an operating position and substitute the other set of jaws in the operating position. The pair of jaws are connected together about a connecting axis arrangement which is separate from and spaced from the pivot axis arrangement for each pair of jaws.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: September 7, 2004
    Assignee: AWI Acquisition Company
    Inventor: Yi Chuan Tseng
  • Patent number: 6725748
    Abstract: A collapsible pliers where a jaw assembly is mounted between a pair of handles. The jaw assembly is movable relative to the handles from a retracted position to an extended position which will permit the jaw assembly to move to an open position and the jaw assembly used in a conventional manner by squeezing of the handles to move the jaw assembly from the open position to a gripping position.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: April 27, 2004
    Assignee: Awi Acquisition Company
    Inventor: Yi Chuan Tseng
  • Patent number: 6647835
    Abstract: A scissors pair of pliers where the pair of jaws of the pliers are to be replaceable with a different pair of jaws.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: November 18, 2003
    Assignee: AWI Acquisition Company
    Inventor: Yi Chuan Tseng
  • Patent number: 6575060
    Abstract: A reversible ratchet wrench which uses a pawl that can be moved between a right position and a left position. The pawl is in continuous connection with a rotatable ratchet wheel. The ratchet wheel rotates freely in a clockwise direction when the pawl is in the right position and is fixed to the wrench body when in the left position. The ratchet wheel rotates freely in a counterclockwise direction when the pawl is in the left position and is fixed to the wrench body when in the right position. A drive plate is mounted on the panel and is connected to a mechanism which is manually moved to cause the pawl to move.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: June 10, 2003
    Assignee: AWI Acquisition Company
    Inventors: Yi Chuan Tseng, Wan Chuan Lee