Patents by Inventor Haichun Huan

Haichun Huan 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: 6854187
    Abstract: The present invention relates to a keyless blade clamp mechanism including a base, a sliding block slidably disposed on the base and a clamping lever pivotally connected on the base. On one pivot side of the clamping lever is a clamp plate and on the other pivot side of the clamping lever is a plate. The base has a supporting surface opposing the clamp plate. In use, the sliding block slides to engage and press the plate causing the clamp plate to pivot and a gap to appear between the clamp plate and the supporting surface to permit a saw blade to be inserted into (or be pulled out of) the gap. The present invention has the advantage that few components are involved and it is easily manufactured at low cost.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: February 15, 2005
    Assignee: Positec Power Tools (Suzhou) Co., LTD
    Inventor: Haichun Huan
  • Publication number: 20040226177
    Abstract: The present invention relates to a keyless blade clamp mechanism including a base, a sliding block slidably disposed on the base and a clamping lever pivotally connected on the base. On one pivot side of the clamping lever is a clamp plate and on the other pivot side of the clamping lever is a plate. The base has a supporting surface opposing the clamp plate. In use, the sliding block slides to engage and press the plate causing the clamp plate to pivot and a gap to appear between the clamp plate and the supporting surface to permit a saw blade to be inserted into (or be pulled out of) the gap. The present invention has the advantage that few components are involved and it is easily manufactured at low cost.
    Type: Application
    Filed: January 12, 2004
    Publication date: November 18, 2004
    Inventor: Haichun Huan