Leaf-type digital clock
US4005570A · kind A · utility
9Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1975 |
| Grant date | Feb 1, 1977 |
| Priority date | — |
| Expiry date | Jul 8, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B19/205
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A leaf-type clock driven by a intermittent and segmental rotation by using so called Geneva-gear mechanism to cause turning-over of the time- and minute-indicating leaves is disclosed. This leaf-type clock has the advantages that number of the leaves may be reduced, and that the time accuracy is improved, and further that small-sized clock can be designed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.