Indicia display device
US4322904A · kind A · utility
1Cited by
9References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1979 |
| Grant date | Apr 6, 1982 |
| Priority date | — |
| Expiry date | Dec 21, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F9/40
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An indicia display device including an outer casing having at least one opening or window. A non-planar guideway is provided within the casing and a sheet of flexible material is mounted for rotation within the guideway and conforms to the non-planar configuration of the guideway. The sheet carries indicia, such as numerals, words, or the like, which is disposed in a generally circular pattern about the axis of rotation of the sheet, and the window is located in alignment with the pattern of indicia. By rotating the sheet within the guideway, the indicia can be successively exposed through the window to the viewer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.