Electric timepiece

Details Electric timepiece Electric timepiece

1987-08-06

1989-02-07

Roskoski, Bernard

Horology: time measuring systems or devices

Displays or display device details

Optical

368316, 368228, G04C 1700

Patent

active

048036722

ABSTRACT:
An electric timepiece having a square dial with corners at the twelve, three, six and nine o'clock positions has a first array of twelve light sources at one to twelve o'clock positions, a second array of four light sources which are inwardly adjacent the light sources of the first array at the twelve, three, six and nine o'clock positions, and a centrally located light source. The color and/or intensity of radiation issuing from the centrally located light source changes at midnight and at noon, and all of the remaining light sources are used to indicate minutes. The light sources of the second array indicate single-minute periods, and the light sources of the first array indicate five-minute periods. In addition, the light sources of the first array are used to indicate hours in colors or hues other than those used to denote five-minute periods.

REFERENCES:
patent: 2169208 (1939-08-01), Adams
patent: 3596462 (1981-08-01), Hayes
patent: 3958409 (1976-05-01), Manber
patent: 4007583 (1977-02-01), Johnson
patent: 4041692 (1977-08-01), Marshino

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