Retractable window covering
US5855235A · kind A · utility
86Cited by
30References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1994 |
| Grant date | Jan 5, 1999 |
| Priority date | — |
| Expiry date | Feb 18, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/2435
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A retractable window covering panel including spaced apart parallel sheets of flexible fabric with vanes adhesively secured therebetween. The covering includes a roller or head rail with a wrinkle and buckle compensating structure such as longitudinal lobes or ribs to prevent creasing, wrinkling, or buckling of the window covering when rolled up. The head rail has means for attaching the window covering to insure proper alignment of the window covering. A bottom rail is secured to one or both sheets. An anti-skew device is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.