Umbrella frame capable of automatic folding and unfolding
US5829462A · kind A · utility
Inventor
Key dates
| Filing date | Oct 27, 1997 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Oct 27, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA45B25/16
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An umbrella frame is composed of a shaft, a movable seat, and a locating tube. The movable seat is movably fitted over the shaft and provided at the lower end thereof with a retaining slot engageable and disengageable with a retaining hook located at the lower segment of the shaft. The movable seat is fastened at the top end thereof with one end of a plurality of strut ribs. The locating tube is fastened at the top end thereof with a plurality of ribs which are supported by the strut ribs. The locating tube is further provided in the midsegment thereof with a opening, two lugs, and a pulley mounted pivotally between the two lugs. A cord extends through the pulley such that one end of the cord is fastened with the movable seat, and that another end of the cord is fastened with the bottom end of the shaft. As the retaining hook is actuated by a press button of the shaft, the retaining hook becomes disengaged with the retaining slot of the movable seat so as to enable the cord to pull the movable seat upwards to unfold the umbrella frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.