Timing unit including core in shell ring

Application Number  00129255 Application Date  2000.09.28
Publication Number  1289951 Publication Date  2001.04.04
Priority Information   1999/9/28 CH 1769/99  
Applicant(s) Name  ETA SA Fabriques D'ebauches  
Inventor(s) Name  Y. Henzckel  
Patent Agency Code  72001 Patent Agent  cui yaobeng
AbstractA timepiece including a case (24) provided with a back cover (28) and a middle part (26), a movement (30) mounted in the casing ring (32), a dial (34) mounted above the ring and a crystal (36) mounted above the dial, said crystal being provided with an annular collar (70) surrounding the flank (64) of the dial (34), characterised in that the casing ring includes means (38) arranged to remove all the play inherent in the dimensional tolerances of the dial, the ring and the back cover (28) of the case, these means on which the collar (70) of the crystal (36) is supported being arranged at the upper end of the ring, along the outer circumference (86) thereof.