Umbrella structure for controlling an automatic opening
US5758677A · kind A · utility
8Cited by
10References
1Claims
0Family size
Inventor
Key dates
| Filing date | Jun 5, 1997 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Jun 5, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA45B25/16
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present invention relates to an improved umbrella including a spring received in a shaft of the umbrella and a controlling piece mounted on the shaft for engaging with a runner in closing state. By use of a slidable piece provided within the shaft and a connecting wire, it is capable of being automatic opened. Because of the spring is received in the shaft and prevented from being rusted or damaged, the invented structure of the umbrella is useful and has improvements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.