Collapsible umbrella
US5337770A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1993 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Aug 27, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA45B19/04
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention relates to a collapsible umbrella having a canopy frame which s collapsible in an at least four-fold manner and a stick (1) which is telescopic in an at least four-stage manner as well as a slide (2) displaceable on this said stick for canopy opening and closing, the canopy linkage comprising a combination of link parallelograms (I, II, III) or lever formations, which is formed from a combination of hollow, U-shaped, flat and round-profiled rod material. In order to make the folded-together umbrella as compact as possible in its cross-section, the invention provides that all the link parallelograms insert into one another so completely, with optimum utilization of the available cavities of the U-profiled canopy rods, that there are no unused empty spaces in the folding bends (K1, K2, K3, K4) of the folded-together formation (FIG. 1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.