Patents by Inventor Hui-Chen Liao

Hui-Chen 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: 7699413
    Abstract: A tool cabinet has a housing and a hanging device. The housing has a work surface, at least one drawer and at least one opening. The at least one drawer is defined in the housing. The hanging device has at least one hanger mounted inside the at least one opening. The at least one hanger has two telescopic stands, a hanging plate and a locking device. The telescopic stands are mounted in the at least one opening and face each other. The hanging plate is mounted between the telescopic stands and extends as the telescopic stands extend. The locking device mounted on the telescopic tubes to hold the inner tube in position. When the tool cabinet is used, the hanging device can be extended out to hang and store tools. The tools can be organized and the work surface will not in be cluttered.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: April 20, 2010
    Inventor: Hui-Chen Liao
  • Patent number: 7410227
    Abstract: A cabinet safety device has a fixing base neighboring a side of the cabinet, a slide base mounted on the fixing base, lock members provided that can hook on both the slide base and the fixing base, and a fastening member provided between a bottom of the slide base and a bottom of the cabinet. When one of the drawers is pulled out, the slide base will go down to let the lock member escape from the slide base, and the slide base then goes up to prevent other drawers from sliding out, thus only one drawer can be pulled out at one time, which avoids potential danger when the center of gravity of the tool cabinet is shifted due to too many drawers being slid out at one time.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: August 12, 2008
    Inventor: Hui-Chen Liao
  • Publication number: 20070063624
    Abstract: A tool cabinet has a housing and a hanging device. The housing has a work surface, at least one drawer and at least one opening. The at least one drawer is defined in the housing. The hanging device has at least one hanger mounted inside the at least one opening. The at least one hanger has two telescopic stands, a hanging plate and a locking device. The telescopic stands are mounted in the at least one opening and face each other. The hanging plate is mounted between the telescopic stands and extends as the telescopic stands extend. The locking device mounted on the telescopic tubes to hold the inner tube in position. When the tool cabinet is used, the hanging device can be extended out to hang and store tools. The tools can be organized and the work surface will not in be cluttered.
    Type: Application
    Filed: September 16, 2005
    Publication date: March 22, 2007
    Inventor: Hui-Chen Liao
  • Patent number: 7182350
    Abstract: A cart with auxiliary wheels has a body having a bottom and two ends, a handle, at least one front swiveling wheel, a set of rear swiveling wheels and a set of auxiliary wheels. The handle is formed on the body. The front swiveling wheels and the rear swiveling wheels are mounted rotatably and respectively on the bottom of the body. The swiveling wheels are omni-directional and allow the cart to be moved in all directions. The auxiliary wheels are mounted centrally between the front swiveling wheels and the rear swiveling wheels. The auxiliary wheels are non-swiveling and are mounted parallel with the front-rear direction of the cart to provide straight-line stability to the cart.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: February 27, 2007
    Inventor: Hui-Chen Liao
  • Publication number: 20070018542
    Abstract: A cabinet safety device has a fixing base neighboring a side of the cabinet, a slide base mounted on the fixing base, lock members provided that can hook on both the slide base and the fixing base, and a fastening member provided between a bottom of the slide base and a bottom of the cabinet. When one of the drawers is pulled out, the slide base will go down to let the lock member escape from the slide base, and the slide base then goes up to prevent other drawers from sliding out, thus only one drawer can be pulled out at one time, which avoids potential danger when the center of gravity of the tool cabinet is shifted due to too many drawers being slid out at one time.
    Type: Application
    Filed: July 19, 2005
    Publication date: January 25, 2007
    Inventor: Hui-Chen Liao
  • Patent number: 6928903
    Abstract: The bi-directional wrench with a ratchet assembly can be used in small space. It includes a handle, a base attached pivotally to the handle, a rotating device mounted on the base and a bi-directional device engaged with the rotating device. The bi-directional wrench with a ratchet assembly can change the effective rotating direction conveniently.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: August 16, 2005
    Inventor: Hui-Chen Liao
  • Patent number: 6912934
    Abstract: A ratchet screwdriver has a body and a driving portion. The body has a handle, a shank integrally formed on the handle, a post with a non-circular periphery pivoted with the shank and a head formed on the post. The driving portion has a spring mounted on the post, a cylinder with a non-circular inner periphery mounted on the post, and a chuck mounted on the head and used for holding the tool head. Because the driving portion of the ratchet screwdriver is longitudinally set on the body, it can reduce whole volume of the ratchet screwdriver to enable the screwdriver to be used in a small place.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: July 5, 2005
    Inventor: Hui-Chen Liao
  • Publication number: 20050097994
    Abstract: A ratchet screwdriver has a body and a driving portion. The body has a handle, a shank integrally formed on the handle, a post with a non-circular periphery pivoted with the shank and a head formed on the post. The driving portion has a spring mounted on the post, a cylinder with a non-circular inner periphery mounted on the post, and a chuck mounted on the head and used for holding the tool head. Because the driving portion of the ratchet screwdriver is longitudinally set on the body, it can reduce whole volume of the ratchet screwdriver to enable the screwdriver to be used in a small place.
    Type: Application
    Filed: November 10, 2003
    Publication date: May 12, 2005
    Inventor: Hui-Chen Liao
  • Publication number: 20040221688
    Abstract: A socket for a wrench has a body with a central hole defined in one end of the body and a connecting device formed on the second end of the body. Multiple protrusions are formed on the inner surface of the central hole. Each protrusion has a peak and multiple teeth formed on one side of the protrusion. With such a socket, the socket can securely hold the head of the fastener with the teeth on the protrusions even when the head has been worn away.
    Type: Application
    Filed: May 5, 2003
    Publication date: November 11, 2004
    Inventor: Hui-Chen Liao
  • Patent number: 6745649
    Abstract: A socket for a wrench has a body with a central hole defined in one end of the body and a connecting device formed on the second end of the body. Multiple first protrusions are formed on the inner surface of the central hole, and each first protrusion has a peak with a first angle. A second protrusion is formed on the inner surface of the central hole between each pair of adjacent first protrusions. Each second protrusion has a peak with a second angle and a recess to make the second angle smaller than the first angle of the peak of the first protrusions. With such a socket, the socket can securely hold the head of the fastener with the peaks on the protrusions even when the head has been worn away.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: June 8, 2004
    Inventor: Hui-Chen Liao
  • Patent number: 6530296
    Abstract: A unidirectional ratchet wrench essentially comprises a wrench body (10), a ratchet (20), an expending ring (30) and a plurality of clamping blocks (40). The ratchet (20) is rotatably mounted inside the wrench body and has the clamping blocks (40) evenly spaced around the ratchet (20) to engage the wrench body (10), whereby the unidirectional wrench has excellent torsion-resisting efficiency and an endurable extension life.
    Type: Grant
    Filed: January 7, 2002
    Date of Patent: March 11, 2003
    Inventor: Hui-Chen Liao