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US 2003/0147308 A1Published application
World clock
OwnerJohn Hincks Dukeinventor
Life of this patent
Estimating the term…
Abstract
The clock shows time as a function of the earth's rotation in a way that distinguishes universal time from local solar time, according to where the user resides within his or her time zone. Time is indicated by movement a marker at the user's location on a rotating polar projection map of the earth.
Claims5
A timekeeping device including
- a base supporting a means to rotate a graphic representation of the earth about a polar axis approximately once a day,
- a user positionable means of indicating a location on said graphic representation,
- a first means of indicating a first direction with respect to said base representing the direction towards the sun from the center of said graphic representation, and
- a user adjustable second means of indicating a second direction from the center of said graphic representation.
1 more element
Dependencies are inferred from the claim text.