Portable screen device
US7426077B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2006 |
| Grant date | Sep 16, 2008 |
| Priority date | — |
| Expiry date | Nov 10, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/56
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A portable screen device including a casing, an extendable screen, and an extendable screen supporting column which has one end pivotally supported at a center portion of a back surface of the casing. The column can be pivoted to an extended position for holding the screen in an extended state. The column includes a plurality tubular members which slide with respect to each other. A lowermost tubular member has a first column lock mechanism for engaging the lowermost tubular member with an adjacent, upper tubular member to maintain the column at a desired height. A column lock releasing mechanism including a pedal is provided for releasing the engagement between the lowermost tubular member and the upper tubular member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.