Horology: time measuring systems or devices – Cases – Wrist worn
Reexamination Certificate
1999-07-19
2001-01-23
Roskoski, Bernard (Department: 2859)
Horology: time measuring systems or devices
Cases
Wrist worn
C224S168000, C224S169000
Reexamination Certificate
active
06176612
ABSTRACT:
The present invention concerns a device for attaching a bracelet or wristlet to a watchcase including a middle part fitted with a pair of horns for attaching the wristlet, and more particularly a device of this type allowing the wristlet to be interchanged simply, without using tools and without risking damaging the watchcase and/or the wristlet.
Generally, watch wristlets are fixed onto watchcases with horns by means of bars onto which the strands of the wristlet are attached, the ends of the bars being fixed to the horns of the watchcase. The most commonly used bars are called spring bars and include two pivots at their ends. The pivots are mobile within a central tube and are subjected to the action of a spring housed within the tube which pushes them outwards. The horns are respectively fitted with holes in which the bar pivots enter. Both horns are parallel to each other and generally spaced apart by 10 to 20 mm.
Such a system for attaching the wristlet to the case has the drawback of generally requiring the intervention of a specialist for detaching the wristlet when the latter has to be replaced by another one. Further, this detaching operation is performed with the aid of a tool, for example tweezers or a knife, which risks damaging the watchcase. This system is consequently not very satisfactory and does not meet current market requirements which demand wristlet attaching devices allowing users easily to replace their wristlet with another by themselves. One may also wish to adapt the type of wristwatch to the circumstances at any time of the day and thus to be able to change the wristlet easily oneself, for example to have a wristlet matching the colour of one's clothes.
A main object of the invention is thus to overcome the drawbacks of the aforementioned prior art by providing a secure and inexpensive device for rapidly attaching a watch wristlet, which can easily be implemented by the user himself, which fits any type of wristlet and which does not impair the aesthetic appearance of the watch.
The invention thus concerns a device for attaching a wristlet to a watchcase including a middle part comprising a pair of attachment horns for the wristlet, this device allowing instantaneous attaching and detaching of a wristlet strand to the middle part without using a tool and without any particular knowledge or visual inspection, characterised in that one of the ends of the wristlet is attached to a plate including two pairs of catches, and co-operating with two pairs of grooves provided in lateral faces of the horns.
As a result of these features, the user can easily detach or attach the wristlet to a watchcase by inserting the catches into the grooves with which they are associated and wedging them on the bottom of said grooves.
Another advantage of the present attaching device lies in the fact that the points of connection of the wristlet to the watchcase are multiplied by two, providing fast and reliable attachment.
A further advantage of the present attaching device lies in the fact that it may be used without discrimination with flexible straps, for example made of leather or fabric, and with metal link bracelets.
According to one feature of the invention, each pair of grooves includes a rectilinear groove and a curved groove having a rectilinear insertion portion extended by a return portion.
According to a preferred embodiment of the invention, the catches are arranged respectively along the longitudinal edges of said plate and the grooves are arranged on the lateral walls of the horns facing each other.
REFERENCES:
patent: 1085857 (1914-02-01), Fitch
patent: 2028791 (1936-01-01), Lynds
patent: 5146437 (1992-09-01), Bourcheron
patent: 647 379 (1985-01-01), None
patent: 0 052 316 (1982-05-01), None
patent: 0 461 069 A1 (1991-12-01), None
patent: 0 664 093 A1 (1995-07-01), None
patent: 2 265 297 (1975-10-01), None
patent: 2 278 286 (1976-02-01), None
Griffin & Szipl, P. C.
Omega SA
Roskoski Bernard
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