Patents by Inventor Li Shiu Huang

Li Shiu Huang 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).

  • Publication number: 20040093997
    Abstract: A tool extension with a screw attraction structure includes an extension rod, an adjusting sleeve, a retaining ring, and a magnetic member. Thus, the screw may be attracted by the magnetic member in the extension rod, so that the extension rod may be used to rotate and lock the screw automatically without having to hold the screw manually, thereby facilitating the user operating the screw, and thereby enhancing the safety of usage. In addition, the limit of movement of the screwdriver head and the locking limit of the screw may be determined by adjusting the relative position between the adjusting sleeve and the mounting head of the extension rod.
    Type: Application
    Filed: November 15, 2002
    Publication date: May 20, 2004
    Inventor: Li Shiu Huang
  • Patent number: 6698319
    Abstract: A tool retaining device includes a shank having two ends selectively engaged in a barrel and having tool members detachably secured to the ends for being selectively used to act onto the objects or to drive fasteners. The shank includes an end shaft having a socket opening for receiving a tool member, a bucket secured onto the shaft and having a bore for slidably receiving a casing. A magnetic member is engaged in the casing and includes an orifice for slidably receiving the tool member and for attracting and retaining the tool member to the shaft.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: March 2, 2004
    Inventor: Li Shiu Huang
  • Publication number: 20030145693
    Abstract: A tool retaining device includes a shank having two ends selectively engaged in a barrel and having tool members detachably secured to the ends for being selectively used to act onto the objects or to drive fasteners. The shank includes an end shaft having a socket opening for receiving a tool member, a bucket secured onto the shaft and having a bore for slidably receiving a casing. A magnetic member is engaged in the casing and includes an orifice for slidably receiving the tool member and for attracting and retaining the tool member to the shaft.
    Type: Application
    Filed: February 4, 2002
    Publication date: August 7, 2003
    Inventor: Li Shiu Huang
  • Patent number: 6154108
    Abstract: An attracting device may be detachably attached onto a tool and includes a chamber for receiving a magnet which is used for attracting fasteners to the tool. A spring-biased ball is engaged onto the attracting device and biased to engage with the tool by a resilient retaining ring, for detachably securing the attracting device onto the tool. A ferrule is rotatably engaged onto the tool for shielding and protecting the resilient retaining ring. The magnet includes a cavity for receiving a head of the tool.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: November 28, 2000
    Inventor: Li Shiu Huang
  • Patent number: 6105473
    Abstract: A tool includes a driving head pivotally coupled to a tool member at a pivotal coupler, and a barrel slidably engaged on the tool member and slidable to engage onto the driving head and to lock the driving head to the tool member and to prevent the driving head from rotating relative to the tool member about the pivotal coupler. The driving head may be rotated relative to the tool member about the pivotal coupler when the barrel is disengaged from the driving head. A pin is rotatably engaged through a channel of the pivotal coupler which is extended from the tool member.
    Type: Grant
    Filed: August 18, 1999
    Date of Patent: August 22, 2000
    Inventor: Li Shiu Huang
  • Patent number: D457797
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: May 28, 2002
    Inventor: Li Shiu Huang