Umbrella structure for releasing wind
US6502592B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Mar 12, 2001 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Apr 5, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA45B25/22
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present invention relates to an umbrella structure for releasing wind and includes a supporting rib pivotally connected with a main rib of the umbrella at a middle position. The supporting rib is provided inside with a coil spring and an end ball for connecting with the outer circumscription of the upper umbrella cover while the lower cover being on the main rib from the connecting position of the main rib and a branch rib extending outward. The assembled umbrella includes two layers of cover wherein the upper cover is elastically connected by the supporting rib for a better connection and a perfect effect for releasing the heavy wind.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.