Rolling clock device
US4912586A · kind A · utility
8Cited by
5References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 3, 1989 |
| Grant date | Mar 27, 1990 |
| Priority date | — |
| Expiry date | Aug 3, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B37/148
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A clock is provided which is movable so as to maintain an indication of local time constantly in a vertically upward position. A shell bears a plurality of time indicia. A clock motor interior to the shell rotates an eccentric weight about the longitudinal axis of the shell, causing the shell to rotate and roll over a support surface. A pointer attached to the clock motor and opposite the eccentric weight points to the proper local time indicia.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.