Umbrella with off-center support
US5505221A · kind A · utility
Inventor
Key dates
| Filing date | Mar 8, 1995 |
| Grant date | Apr 9, 1996 |
| Priority date | — |
| Expiry date | Mar 8, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA45B11/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An umbrella with an off-center support shaft an umbrella canopy has an elongated shape, which is symmetrical along a central plane. Support ribs of two separate types are provided to simultaneously raise and lower the asymmetric ends of the canopy. Shorter, preferably telescoping ribs secure the shorter end of the canopy to the top of the shaft. Longer ribs connect the wider side of the canopy and terminating at an upper end at a point along the canopy spaced from the shaft. Deployment arms are pivotally connected to the ribs at a point spaced from their upper ends. The ribs are connected to the top of the shaft by first and second hinged connecting arms, one of the arms being also pivotally connected to the deployment arm, which at its opposite end is connected pivotally to a sleeve slidably mounted on the shaft. The deployment members, the connecting arms and the longer ribs form a parallelogram shaped hinge joint for extending the longer ribs outwardly when the canopy is erected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.