Patents Assigned to Runva Mechanical & Electrical Co, LLC
  • Variable speed winch
    Patent number: 7922153
    Abstract: A variable speed winch in one embodiment includes a drive shaft, a power source, a single gear operation lever, a variable gearing system and a drum. The power source is configured to rotate the drive shaft. The variable gearing system is in rotational connection with the drive shaft and is configured to change the gearing of the winch based on the rotation of the single gear operation lever. The drum is in rotational connection with the variable gearing system.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: April 12, 2011
    Assignee: Runva Mechanical & Electrical Co, LLC
    Inventors: Norman Zhou, Zhongcheng Peng