Window shade, and method apparatus for manufacturing same
US4539239A · kind A · utility
16Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1981 |
| Grant date | Sep 3, 1985 |
| Priority date | — |
| Expiry date | Sep 23, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2457
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A window shade which includes a sheet member formed from a material having the characteristics, with respect to strength, formability and shape retention, of plastics, which sheet member, by reason of the formation of one or more continuous cut lines, the penetration of which are controlled to rather carefully defined parameters, can be quickly and accurately sized to width at the time of installation by the final user, a method of manufacturing a window shade, and apparatus for manufacturing a window shade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.