Display device for watches

Horology: time measuring systems or devices – Displays or display device details

Reexamination Certificate

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Details

C368S077000

Reexamination Certificate

active

06842404

ABSTRACT:
A display device for watches, comprising a watch dial provided with a day hours display window for displaying a respective one of the hours of the day during daytime and with a separate night hours display window for displaying a respective one of the hours of the night during nighttime. The display device for watches comprises a day hours disc provided with twelve hour numbers and a night hours disc provided with twelve hour numbers. The two hour display windows and the two hour discs are arranged such that the hour numbers of the day hours disc are visible only in the day hours display window, and the hour numbers of the night hours disc are visible only in the night hours display window. By using two separate hour discs and two separate hour display windows for displaying the day hours and for displaying the night hours, respectively, hour number representations on the one hand can be larger than when using a single hour display window and a single 24-hour disc. On the other hand, it is possible with two separate hour discs and with two separate hour display windows to use only the hour numbers 1 to 12 for each hour disc. The number of two-digit figures requiring a relatively large amount of space is greatly reduced, and the hour numbers 20 to 24 beginning with the number 2, taking up particularly much space, are not required.

REFERENCES:
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patent: 3721083 (1973-03-01), Jauch
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patent: 6359839 (2002-03-01), Schenk et al.
patent: 6507536 (2003-01-01), Keatch
patent: 664468 (1978-12-01), None
patent: 671317 (1978-12-01), None
patent: 738 177 (1943-07-01), None
patent: 74 41 446 (1973-06-01), None
Uhrenmagazin 7/8 96, Jun. 26, 1996, p. 39.
Armbanduhren 2 96, Jun. 5, 1996, 2 pages.
Chronos 4 96, Jun. 21, 1996, 2 pages.
Armbanduhren 3/97, p. 42.
Uhrenmagazin 4/96, Apr., 1996, p. 105.

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