Timepiece with rotatable outer ring

Details Timepiece with rotatable outer ring Timepiece with rotatable outer ring

1996-04-05

1996-11-05

Miska, Vit W.

Horology: time measuring systems or devices

Plural time zones

368 27, G04B 1922

Patent

active

055724892

ABSTRACT:
A universal timepiece (10) having a manually operable outer ring (33) for selecting one of twenty-four time zones, where a display indicates the time of the time zone selected. For this purpose a device for detecting the rotational position of the outer ring (33) is provided which has a special arrangement of permanent magnets (39a-j) in the outer ring (33) and of magnetic switches (27a-h) in the timepiece casing (11, 12) in a specific number as well as evaluating electronics in the timepiece movement (21). The permanent magnets (39a-j) determine the binary statuses of the magnetic switches (27a-h), which are interpreted together as a signal or as a status pattern. The special arrangement of the magnetic switches (27a-h) and the permanent magnets (39a-j) effect for each rotational position an intrinsic status pattern different in each case from the others which permits a clear indication of the selected rotational position of the outer ring (33).

REFERENCES:
patent: 3513653 (1970-05-01), Denardo
patent: 4109457 (1978-08-01), Laesser et al.
patent: 4347594 (1982-08-01), Tschanz
patent: 4451159 (1984-05-01), Tanaka

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