Watch case fitted with control means

Horology: time measuring systems or devices – Chronological – With manually actuated display

Reexamination Certificate

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26, 26

Reexamination Certificate

active

06198697

ABSTRACT:

The present invention concerns a watch case of the type including a wall with an inner face, which defines a housing intended to accommodate a watch movement, and an outer face, and control means able to have at least a first and a second state, which include a moving element mounted so as to slide on the outer face of said wall and able to occupy at least two positions, each position corresponding to one of said states.
Such cases are known. They are used in particular with “alarm” or “repeater” watches which include a sound generating device or a striking mechanism. A watch of this type is disclosed in Swiss Patent No. 672,868. The solution described in this document includes an outer sliding part which slides over the external surface of the case, the outer sliding part being mechanically connected, through an aperture made in the case, to an inner sliding part. A sealing gasket, formed of a leaf made of a soft water resistant material, is arranged between the inner sliding part and the wall of the watch case. Locking means are able to be moved with respect to the outer slide, between a position in which the gasket is compressed and a position in which the gasket is not compressed.
In this case, water resistance is only guaranteed when the locking means have been moved so that the gasket is compressed. In other words, if the user forgets to move these locking means, the water resistance of the watch is not guaranteed.
It is also known that it is difficult to assure the water resistance of a hole which is not of cylindrical shape. This difficulty is increased by the fact that the control and locking movements occur along substantially perpendicular axes.
The solution described in French Patent No. 2 592 186 enables this drawback to be overcome. It consists in symmetrically mounting two mutually opposite push buttons, in two holes which are aligned and pass right through the wall of the middle part. The push buttons are connected to each other by a lever which controls a sound generating device contact. Each of the push buttons is provided with a sealing gasket. The alarm control is effected by pushing one or other of the push buttons.
Such a solution certainly enables improved water resistance to be obtained. However, the fact of having to make two holes in the walls of the case can only increase the risk of leakage.
Moreover, since the holes cannot have radial orientation, the machining thereof is made more difficult.
The main object of the invention is thus to provide a control mechanism as defined hereinbefore, providing a maximum guarantee as regards water resistance, while being of simple and inexpensive design.
The invention thus concerns a watch case including a wall with an inner face, which defines a housing intended to accommodate a watch movement, and an outer face, and control means able to have at least a first and a second state, which include a moving element mounted so as to slide over the outer face of said wall and able to occupy at least two positions, each position corresponding to one of said states, characterised in that said means further include a push button, mounted so as to slide in a hole passing through said wall and provided with an inner end intended to co-operate with said movement and with an outer end co-operating with said moving element.


REFERENCES:
patent: 4307460 (1981-12-01), Polonsky
patent: 4364674 (1982-12-01), Tesch
patent: 5252230 (1993-10-01), Kuo
patent: 672868 (1990-01-01), None
patent: 0 694 939 (1996-01-01), None
patent: 2278109 (1976-02-01), None
patent: 2592186 (1987-06-01), None
patent: 2068604 (1981-12-01), None
patent: 2205666 (1988-12-01), None

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