TIMEPIECE HOUSING WITH COMPOSITE FRAME

摘要

The frame includes an inner metallic frame (10) and an outer frame (20) made of a natural or synthetic inorganic material such as ceramic. The inner frame (10) comprises an upper bushing (12) and a lower bushing (14), each bushing comprising a radial peripheral extension (13, 15) with opposite bearings for mechanically blocking the outer frame (20), e.g. by screwing the two bushings (12, 14) into one another.