Patents by Inventor Chi-Shen Liao

Chi-Shen Liao 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: 7347405
    Abstract: An inlet valve is provided for a pneumatic tool. The pneumatic tool defines a space and a passageway communicated with the space. The inlet valve includes a housing and a plunger. The housing is movable in the space between a first position where it blocks the space from the passageway and a second position where it allows the communication between the space and the passageway. The housing defines an inlet and an outlet. The plunger is inserted through the outlet and movable in the pneumatic tool between a first position, a second position and a third position. An end of the plunger is put in the housing for pushing the housing, from inside, to the second position as the plunger is in the third position. The plunger includes an annular flange put in the housing for blocking the outlet as the plunger is in the first position and for opening the outlet as the plunger is in the second position.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: March 25, 2008
    Assignee: Mighty Seven International Co., Ltd.
    Inventor: Chi-Shen Liao
  • Publication number: 20060011366
    Abstract: An inlet valve is provided for a pneumatic tool. The pneumatic tool defines a space and a passageway communicated with the space. The inlet valve includes a ring and a controller. The ring can be tilted in the space between a first position where it blocks the space from the passageway and a second position where it allows the communication between the space and the passageway. The ring defines a central aperture. The controller can be pivoted in the space between a first position, a second position and a third position. The controller includes a disc and a rod raised from the disc. The disc is put against the ring as the controller is in the first position and pivoted from the ring as the controller is in the second position. The rod is inserted through the central aperture of the ring. The diameter of the rod is smaller than that of the central aperture of the ring in order to allow pressurized air to travel through the central aperture of the ring as the controller is in the second position.
    Type: Application
    Filed: June 14, 2005
    Publication date: January 19, 2006
    Applicant: MIGHTY SEVEN INTERNATIONAL CO., LTD.
    Inventor: Chi-Shen Liao
  • Publication number: 20060000998
    Abstract: An inlet valve is provided for a pneumatic tool. The pneumatic tool defines a space and a passageway communicated with the space. The inlet valve includes a housing and a plunger. The housing is movable in the space between a first position where it blocks the space from the passageway and a second position where it allows the communication between the space and the passageway. The housing defines an inlet and an outlet. The plunger is inserted through the outlet and movable in the pneumatic tool between a first position, a second position and a third position. An end of the plunger is put in the housing for pushing the housing, from inside, to the second position as the plunger is in the third position. The plunger includes an annular flange put in the housing for blocking the outlet as the plunger is in the first position and for opening the outlet as the plunger is in the second position.
    Type: Application
    Filed: May 31, 2005
    Publication date: January 5, 2006
    Applicant: MIGHTY SEVEN INTERNATIONAL CO., LTD.
    Inventor: Chi-Shen Liao
  • Patent number: 6648080
    Abstract: An impact device has a carrier, a hammer, a pivot pin, two hammer pins and an output axle. The carrier has a bridge and two walls. Two depressions are defined in the bridge. An elongated hole is defined each wall. The hammer is pivotally mounted in the carrier through the pivot pin. Two legs respectively extend from the hammer to define a recess with an opening. A cavity is defined in each respective leg and corresponds to one of the depressions. An impact protrusion is formed on each respective leg to narrow the opening of the recess. Each hammer pin is moveably received in one of the depressions and the corresponding cavity. The output axle has a jaw selectively abutting against one of the impact protrusions on the hammer. Accordingly, an impact device with a durable structure is provided.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: November 18, 2003
    Inventor: Chi-Shen Liao
  • Patent number: D497787
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: November 2, 2004
    Inventor: Chi-Shen Liao