Patents by Inventor Huan Hai-Chun

Huan Hai-Chun 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).

  • Counterbalance mechanism
    Patent number: 7117601
    Abstract: The present invention relates to a counterbalance mechanism for a reciprocating power tool in which a rocker cradle operatively connects or is coupled to a rocker arm driven by a rotary transmission mechanism to drive a counterweight in the opposite direction to that of the movement of the reciprocating rod so as to counteract the vibration produced by the reciprocating rod.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: October 10, 2006
    Assignee: Positec Power Tools (Suzhou) Co., Ltd.
    Inventor: Huan Hai-Chun
  • Counterbalance mechanism
    Publication number: 20050193571
    Abstract: The present invention relates to a counterbalance mechanism for a reciprocating power tool in which a rocker cradle operatively connects or is coupled to a rocker arm driven by a rotary transmission mechanism to drive a counterweight in the opposite direction to that of the movement of the reciprocating rod so as to counteract the vibration produced by the reciprocating rod.
    Type: Application
    Filed: February 23, 2005
    Publication date: September 8, 2005
    Inventor: Huan Hai-Chun