Patents by Inventor Lizhong YOU

Lizhong YOU 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: 11155289
    Abstract: The present invention discloses a folding cart, which comprises a left frame, a right frame, plurality of platforms, a left connecting rod, a right connecting rod, a guide rod, a sliding sleeve, a pressing member, a moving block and an elastic member. The sliding sleeve, disposed on the guide rod and slidable up and down relative to the guide rod, has a limiting hole opposite to the second opening of the guide rod. The pressing member has a first slope. The moving block has a second slope and a limiting protrusion. By the slope sliding between the pressing member and the moving block and the sliding of the sliding sleeve along the guide rod, the sliding is smooth, with low friction. Therefore, not too much force is required and the operation is thus easier.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: October 26, 2021
    Assignee: NINGBO MEIQI TOOL CO., LTD.
    Inventor: Lizhong You
  • Publication number: 20210146981
    Abstract: The present invention discloses a folding cart, which comprises a left frame, a right frame, plurality of platforms, a left connecting rod, a right connecting rod, a guide rod, a sliding sleeve, a pressing member, a moving block and an elastic member. The sliding sleeve, disposed on the guide rod and slidable up and down relative to the guide rod, has a limiting hole opposite to the second opening of the guide rod. The pressing member has a first slope. The moving block has a second slope and a limiting protrusion. By the slope sliding between the pressing member and the moving block and the sliding of the sliding sleeve along the guide rod, the sliding is smooth, with low friction. Therefore, not too much force is required and the operation is thus easier.
    Type: Application
    Filed: March 13, 2020
    Publication date: May 20, 2021
    Applicant: NINGBO MEIQI TOOL CO., LTD.
    Inventor: Lizhong YOU
  • Patent number: D938126
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: December 7, 2021
    Assignee: NINGBO MEIQI TOOL CO., LTD.
    Inventor: Lizhong You
  • Patent number: D950949
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: May 10, 2022
    Assignee: NINGBO MEIQI TOOL CO., LTD.
    Inventor: Lizhong You
  • Patent number: D981715
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: March 28, 2023
    Assignee: NINGBO MEIQI TOOL CO., LTD.
    Inventor: Lizhong You