Solar sign assembly
US4227327A · kind A · utility
15Cited by
15References
16Claims
0Family size
Inventor
Key dates
| Filing date | Apr 11, 1979 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | Apr 11, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S136/291
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display assembly is provided including a base, a d.c. motor mounted completely within the base, a solar cell operatively mounted to the base, and a sign member rotated by the motor. A sleeve is provided on an elongated shaft connected to the sign member, and that sleeve slips over the motor shaft to provide an interference fit, but not a press fit. The sign has sufficient cross-sectional area to provide enough air-resistance so that, in combination with the interference fit between the shafts, the sign will turn at an appropriate speed for easy reading even though the motor shaft is turning much more quickly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.