Watch equipped with means for determining a location longitude

Details Watch equipped with means for determining a location longitude Watch equipped with means for determining a location longitude

2005-09-20

2005-09-20

Cuneo, Kamand (Department: 2841)

Horology: time measuring systems or devices

Astronomical

With navigational display

C368S021000, C368S037000, C368S228000

Reexamination Certificate

active

06947351

ABSTRACT:
The invention concerns a watch equipped with means for determining a location longitude and a device for determining the sun's altitude above the horizon. Said watch comprises a mobile element (16) doing one full rotation in 12 hours and bearing a hour hand (24), and a dial (32). It comprises for this purpose a rotating ring (44) for reading longitude, bearing an index mark (47) and, therefrom, a scale (45) in degrees, extending from 0° to 90° on either side of the index mark and covering the ring (44) over its whole periphery. Moreover, the dial (32) is provided with a circular scale (33) for selecting a time zone, with a median point (35) corresponding to the dial top point and a graduation from 0 to +6 hours or −6 hours depending on the rotational direction.

REFERENCES:
patent: 428588 (1890-05-01), Barrett
patent: 434137 (1890-08-01), Plechawski
patent: 2032462 (1936-03-01), Bean
patent: 4032754 (1977-06-01), Ageton
patent: 4387999 (1983-06-01), Shelley
patent: 4487511 (1984-12-01), Lucarelli
patent: 4681460 (1987-07-01), Nishimura
patent: 4993002 (1991-02-01), Kerr
patent: 5253225 (1993-10-01), Vaucher
patent: 5982710 (1999-11-01), Rawat et al.
patent: 6134186 (2000-10-01), Jang

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