Planisphere clock
US7518956B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 2006 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Sep 29, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B19/262
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A timepiece for displaying a planisphere and indicating a portion of the planisphere. Another exemplary embodiment is a clock that displays both sidereal and solar time, while indicating a portion of the planisphere at a particular time. Another exemplary embodiment of the timepiece includes an adjustment feature that allows a user to adjust the portion of the planisphere indicated to a particular geographic location. An exemplary embodiment may contain a celestial or terrestrial planisphere. As a result, an exemplary embodiment of the timepiece may provide valuable information about the planisphere at any particular sidereal or solar time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.