Shaft structure of automatic umbrella
US8365747B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Aug 8, 2011 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Aug 8, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA45B25/16
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present invention provides a structure of shaft of automatic umbrella, which includes a shaft assembly including a second section having a top end fixed to an internal plug. An inner tube is fixed at a top end thereof to the internal plug and receives therein an operation tube having a bottom coupled to an operation plug. The inner tube receives in a top portion thereof a pulley around which an operation cable wraps. An end of the operation cable is fixed to the bullet-like member and an opposite end fixed to the operation plug. To open the umbrella, a push button is depressed and an expansion spring pushes upward the second section so that the runner cable and the operation cable drive the runner and a third shaft section upward to completely open the umbrella.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.