Sealed control arrangement for a timepiece

Details Sealed control arrangement for a timepiece Sealed control arrangement for a timepiece

1990-11-26

1993-02-02

Roskoski, Bernard

Horology: time measuring systems or devices

Crown or stem details

368320, G04B 2900

Patent

active

051843340

ABSTRACT:
The sealed control arrangement for a timepiece is lodged in a case (20) and includes a crown (46) rotating around a tube. The crown includes an integrally formed head (10), central portion (23) and lateral skirt (12). The internal wall (11) of the skirt exhibits a cylindrical surface over its entire height. A packing (13) having the form of an annular bandage surrounding the tube exhibits an annular projection (16) on its internal portion corporating with an annular groove (15) formed in the tube. The external portion of said bandage is shaped in a manner such that whatever be the axial position of the crown (46), the lower edge (24) of the internal wall of the skirt is always in contact with said external portion of the bandage. The arrangement allows correction of data displayed by the timepiece while exhibiting excellent reliability in respect of the sealing which it assures.

REFERENCES:
patent: 2284594 (1942-05-01), Schmitz
patent: 3418800 (1968-12-01), Hashii
patent: 4313187 (1982-01-01), Waki et al.
patent: 4451719 (1947-05-01), Lauterberg

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