Patents by Inventor Te-Fa Chan

Te-Fa 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).

  • Publication number: 20030204956
    Abstract: An adjustable head adapted to an electrical clipper has an engaging port adapted to be securely attached to a side face of a body of the electrical clipper. A trough is defined in the engaging port and cutouts are oppositely defined in two inner side faces of the engaging port. A connecting head is detachably received in the engaging port. The connecting head has a base with two protrusions oppositely formed on two side faces of the connecting head to correspond to the cutouts in the two tracks. Two slits are each defined adjacent to a corresponding one of the two protrusions to provide resilience to the corresponding protrusion and a hollow receiving port is formed on a side of the base. The receiving port is adapted to correspond to teeth of the electrical clipper and has through holes defined in a top face of the receiving port.
    Type: Application
    Filed: May 3, 2002
    Publication date: November 6, 2003
    Inventor: Te-Fa Chan
  • Patent number: 6640440
    Abstract: An adjustable head adapted to an electrical clipper has an engaging port adapted to be securely attached to a side face of a body of the electrical clipper. A trough is defined in the engaging port and cutouts are oppositely defined in two inner side faces of the engaging port. A connecting head is detachably received in the engaging port. The connecting head has a base with two protrusions oppositely formed on two side faces of the connecting head to correspond to the cutouts in the two tracks. Two slits are each defined adjacent to a corresponding one of the two protrusions to provide resilience to the corresponding protrusion and a hollow receiving port is formed on a side of the base. The receiving port is adapted to correspond to teeth of the electrical clipper and has through holes defined in a top face of the receiving port.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: November 4, 2003
    Inventor: Te-Fa Chan