Projection apparatuses and associated methods
US8270075B2 · kind B2 · utility
2Cited by
37References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2011 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Jul 1, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Projection apparatuses and associated methods are provided. A representative apparatus includes: a support frame defining a projection area; a polymeric screen of sheet material sized and shaped to span at least a portion of the projection area; a retention member operative to contact the polymeric screen along an edge thereof; and a tensioning assembly operative to apply tension to the screen via the retention member, the tensioning assembly being operative to selectively reposition the retention member relative to the support frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.