Patents by Inventor Xiao-jing Han

Xiao-jing Han 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).

  • Two-stroke engine
    Patent number: 6499445
    Abstract: A two-stroke engine including a cylinder body having an air intake and an air vent, a piston slidably positioned in a portion of the cylinder body and having an admission passage and an air channel located in an upper portion of the piston, a crankshaft rotatably positioned in another portion of the cylinder body and having a cam, a connecting rod connected between the piston and the cam shaft, the connecting rod comprising an upper portion connected to the piston and a lower portion connected to the crankshaft at the cam, the upper and lower portions connected to each other and being rotatable with respect to each other, and a spring actuated tappet slidably locted in slots in the upper and lower portions and biased against the cam on one end of the tappet, another end of the tappet connected to the upper portion such that sliding action of the tappet in response to rotation of the cam causes the upper portion to rotate a selected amount with respect to the lower portion, which causes the piston to rotate wi
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: December 31, 2002
    Inventor: Xiao-jing Han
  • Two-stroke engine
    Publication number: 20020073954
    Abstract: A two-stroke engine including a cylinder body having an air intake and an air vent, a piston slidably positioned in a portion of the cylinder body and having an admission passage and an air channel located in an upper portion of the piston, a crankshaft rotatably positioned in another portion of the cylinder body and having a cam, a connecting rod connected between the piston and the cam shaft, the connecting rod comprising an upper portion connected to the piston and a lower portion connected to the crankshaft at the cam, the upper and lower portions connected to each other and being rotatable with respect to each other, and a spring actuated tappet slidably located in slots in the upper and lower portions and biased against the cam on one end of the tappet, another end of the tappet connected to the upper portion such that sliding action of the tappet in response to rotation of the cam causes the upper portion to rotate a selected amount with respect to the lower portion, which causes the piston to rotate w
    Type: Application
    Filed: February 12, 2002
    Publication date: June 20, 2002
    Inventor: Xiao-Jing Han