Indexing system for changeable signs
US6038799A · kind A · utility
1Cited by
5References
3Claims
0Family size
Inventors
Key dates
| Filing date | Nov 24, 1998 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Nov 24, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19874
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An indexing system for signs consisting of a plurality of indicia bearing vane faces wherein the vane faces are sequentially exposed to view in the manner of a "wave", such sequential revealing of the sign vane faces generating interest in the sign's message. Each sign vane is rotated by a transmission and the transmissions are interconnected in such a manner as to sequentially operate the vanes to produce the "wave" action and detents associated with each transmission lock the sign vane in the desired position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.