Kid play tunnel and storage method thereof
US11213764B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 5, 2021 |
| Grant date | Jan 4, 2022 |
| Priority date | — |
| Expiry date | Aug 5, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2009/006
- WIPO fieldFurniture, games
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.