Protective casing for a wrist watch

Abstract

Abstract Protective casing for a wrist-watch particularly for use under rare or nil atmosphere conditions, said casing comprising a bezel and a bottom removably secured one to the other, the bottom having diametrically opposed recesses to accommodate passage of the wrist band of the watch and the bezel part having an aperture defined therein opening on the glass of the watch face. The casing functions to insulate the enclosed watch by reducing calorific exchanges by radiation when the watch is exposed to rare or nil atmosphere conditions. The surfaces of the casing parts are treated to maintain the ratio between the absorption and the emission of heat by radiation so that the temperature inside the casing does not go beyond -40* C in a given interval of time, and does not grow beyond 40* C in an unlimited time. The aperture defining portion may include a bearing edge surface engaging the glass of the watch face to prevent bursting thereof under vacuo environmental conditions. The bezel can carry a pair of push buttons operable upon the control pushers of a chronograph, if desired. A portion of the outer face of the bottom of the protective casing is anodized and colored.

Inventors

• 👤 P Chopard

Bibliographic Details