Patents by Inventor Liping Ying

Liping Ying 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).

  • Device for observing and positioning sharpening angle of cutting edge
    Patent number: 12372352
    Abstract: Provided is a device for observing and positioning a sharpening angle of a cutting edge. The device includes a spirit bubble for observing a change of a sharpening angle of a cutting edge and positioning the sharpening angle of the cutting edge, and a base for fixing the device on a knife body. The spirit bubble is rotatably connected to the base for adjusting an angle between the spirit bubble and the base. The device enables, in a dynamic process of grinding a cutting edge of a knife, a grinder to continuously remain in a correct sharpening angle range and grind the cutting edge in accordance with a correct sharpening angle of the knife when holding the knife to perform a grinding action, and also meets a requirement for controlling sharpening angles of cutting edges of knives with various edge shapes in respective edge grinding processes of the knives.
    Type: Grant
    Filed: March 29, 2023
    Date of Patent: July 29, 2025
    Assignee: SHARPAL, INC.
    Inventors: Jianhua Wang, Lei Fang, Xiuying Wang, Liping Ying
  • Device for Observing and Positioning Sharpening Angle of Cutting Edge
    Publication number: 20230314132
    Abstract: Provided is a device for observing and positioning a sharpening angle of a cutting edge. The device includes a spirit bubble for observing a change of a sharpening angle of a cutting edge and positioning the sharpening angle of the cutting edge, and a base for fixing the device on a knife body. The spirit bubble is rotatably connected to the base for adjusting an angle between the spirit bubble and the base. The device enables, in a dynamic process of grinding a cutting edge of a knife, a grinder to continuously remain in a correct sharpening angle range and grind the cutting edge in accordance with a correct sharpening angle of the knife when holding the knife to perform a grinding action, and also meets a requirement for controlling sharpening angles of cutting edges of knives with various edge shapes in respective edge grinding processes of the knives.
    Type: Application
    Filed: March 29, 2023
    Publication date: October 5, 2023
    Inventors: Jianhua Wang, Lei Fang, Xiuying Wang, Liping Ying
  • Combined broom and dustpan
    Patent number: D1068193
    Type: Grant
    Filed: August 30, 2023
    Date of Patent: March 25, 2025
    Inventor: Liping Ying