Patents by Inventor Laichao Lu

Laichao Lu 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: 9427886
    Abstract: A reset spring device for a one-log splitter single-action hydraulic cylinder comprises a spring guide, reset spring, bearing, curved transmission lever, and guide seal. The spring guide has a first end and second end, the reset spring housed within the spring guide, the bearing housed within a portion at the first end, the spring abutting the bearing, the guide seal disposed at the first end of the guide, the transmission lever positioned outside the spring guide and engaged with the bearing. The transmission lever having a curved protrusion operably engaged through a longitudinal opening on the spring guide and through a groove on the bearing. A push plate is connected to the lever. During operation, when a cylinder is pushing forward, the lever compresses the spring through the bearing; and when a handle is released, the log splitter ceases operating, the cylinder is reset by each reset spring device.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: August 30, 2016
    Assignee: Jiashan Superpower Tools Co., Ltd
    Inventors: Yuxin Lu, Zhongcheng Peng, Laichao Lu
  • Publication number: 20120280440
    Abstract: A reset spring device for a one-log splitter single-action hydraulic cylinder comprises a spring guide, reset spring, bearing, curved transmission lever, and guide seal. The spring guide has a first end and second end, the reset spring housed within the spring guide, the bearing housed within a portion at the first end, the spring abutting the bearing, the guide seal disposed at the first end of the guide, the transmission lever positioned outside the spring guide and engaged with the bearing. The transmission lever having a curved protrusion operably engaged through a longitudinal opening on the spring guide and through a groove on the bearing. A piston rod pin is connected to the lever. During operation, when a cylinder is pushing forward, the lever compresses the spring through the bearing; and when a handle is released, the log splitter ceases operating, the cylinder is reset by each reset spring device.
    Type: Application
    Filed: May 7, 2012
    Publication date: November 8, 2012
    Applicant: Jiashan Superpower Tools Co., Ltd
    Inventors: Yuxin Lu, Zhongcheng Peng, Laichao Lu
  • Patent number: D652065
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: January 10, 2012
    Assignee: Jiashan Superpower Tools Co., Ltd.
    Inventors: Yuxin Lu, Laichao Lu, Zhongcheng Peng