| 发明名称 | Balance spring stud for a timepiece | ||
| 摘要 | Balance spring stud including, around a housing receiving a balance spring of reference thickness, a one-piece component made of a shape memory alloy and including two lugs, each arranged to rest on one of the surfaces of the balance spring, and wherein, in the free state, the minimum width of the air gap of the lugs is greater than the maximum value of the reference thickness when the component is in an open position corresponding to a martensitic structure, and wherein the maximum width of the air gap is less than the minimum value of the reference thickness when the component is in a closed position corresponding to an austenitic structure, and the balance spring includes an area of lesser thickness having a minimum thickness equal to the reference thickness, surrounded by areas of large thickness having a minimum thickness greater than the reference thickness. | ||
| 申请公布号 | US9367038(B1) | 申请公布日期 | 2016.06.14 |
| 申请号 | US201514873533 | 申请日期 | 2015.10.02 |
| 申请人 | Montres Breguet S.A. | 发明人 | Villard Gaetan;Germond Lucien;Karapatis Polychronis Nakis;Beugin Stephane;Marechal Sylvain |
| 分类号 | G04B17/06;G04B17/32;G04B15/06;G04B18/02 | 主分类号 | G04B17/06 |
| 代理机构 | Oblon, McClelland, Maier & Neustadt, L.L.P. | 代理人 | Oblon, McClelland, Maier & Neustadt, L.L.P. |
| 主权项 | 1. An assembly, comprising: a balance spring which comprises two opposite lateral surfaces separated by a reference thickness, and a balance spring stud including a housing dimensioned to receive said balance spring, said stud including, around said housing, at least one one-piece component made of a shape memory alloy and including at least two lugs defining together an air gap and each arranged to rest on one of said opposite lateral surfaces of said balance spring, and wherein, in the free state, the minimum width of said air-gap is greater than the maximum value of said reference thickness when said component is in an open position corresponding to a martensitic structure, and wherein the maximum width of said air-gap is less than the minimum value of said reference thickness when said component is in a closed position corresponding to an austenitic structure, wherein said balance spring locally includes at least one area of lesser thickness whose minimum thickness is said reference thickness for which said stud is devised, and which is surrounded by areas of large thickness whose minimum thickness is greater than said reference thickness. | ||
| 地址 | L'Abbaye CH | ||