• Patent Title: Kid play tunnel and storage method thereof
  • Application No.: US17394440
    Application Date: 2021-08-05
  • Publication No.: US11213764B1
    Publication Date: 2022-01-04
  • Inventor: Jie Li
  • Applicant: Haiying Liu
  • Applicant Address: CN Ankang
  • Assignee: Haiying Liu
  • Current Assignee: Haiying Liu
  • Current Assignee Address: CN Ankang
  • Priority: CN202022729565.7 20201123
  • Main IPC: E04H15/40
  • IPC: E04H15/40 A63H33/00 A63B9/00
Kid play tunnel and storage method thereof
Abstract:
A kid play tunnel comprises an elastic frame, a flexible tube coat, and sliding pipes. The elastic frame is in a spiral shape and comprises head sections and connecting sections connected with the head sections. Each head section of the elastic frame overlaps a respective portion of a corresponding connecting section of the elastic frame to form a frame ring. Each frame ring is closed and comprises a spiral end. The flexible tube coat is arranged on a whole section of the elastic frame. Two ends of the flexible tube coat are annular flexible sleeves. Each annular flexible sleeve is sleeved on a respective frame ring. The sliding pipes limit a circumferential sliding of the head sections with respect to the connecting section of the elastic frame. A diameter of each frame ring is reduced by a corresponding sliding pipe when the kid play tunnel is folded.
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